Sonoma Fall Classic
What happens when the "original" Lake Sonoma 50 Mile moves to the Fall and joins forces with a 100 miler, trail marathon & relays? Come find out at the inaugural Sonoma Fall Classic - now presented by Aravaipa Running in partnership with Healdsburg Running Company & Tropical John Medinger.
Come experience one of the most relentless and beautiful ultras on the West Coast featuring miles upon miles of singletrack with majestic views of Lake Sonoma, nestled in the beauty of wine country during harvest season.
With free camping, festive vibes, impeccable race atmosphere & more, come be part of the inaugural Sonoma Fall Classic!
Event Location
100 Mile, Marathon & Relay Start:
Lake Sonoma Recreation Area
3227 Stewarts Point-Skaggs Springs Rd
Geyserville, CA 95441
50 Mile Start:
The Ranch at Lake Sonoma
100 Lake Sonoma Overlook Rd
Geyserville, CA 95441
Finish (All Races):
Lake Sonoma Recreation Area
3227 Stewarts Point-Skaggs Springs Rd
Geyserville, CA 95441
Event Timeline
5:00 AM - 100 Mile Sufferfest Start5:00 AM - 50 Mile Relay Start
5:00 AM - 100 Mile Relay Start
6:30 AM - Lake Sonoma 50 Mile Start
8:00 AM - Sonoma Trail Marathon Start
Bib Pickup
Friday, October 16, 2026
Healdsburg Running Company
333 Center St
Healdsburg, CA 95448
Course Information
| Until 3/31 | Until 8/31 | Until 10/12 | Race Week | |
| 100 Mile | $375 | $405 | $435 | $465 |
| 50 Mile | $195 | $215 | $235 | $255 |
| Marathon | $145 | $160 | $175 | $190 |
| 100 Mile Relay | $380 | $400 | $420 | $440 |
| 50 Mile Relay | $280 | $300 | $320 | $340 |
Shirts guaranteed on race day if ordered by 9/15. After 9/15, shirts are not guaranteed with your registration & may be available on race day if there are extras.
**Pricing does not include tax or any fees from Ultrasignup
Course Information
Distance | 100.5 Miles
Time Limit | 36 Hours
Total Estimated Elevation Gain | +25,058 feet
Max Elevation | 1,754' feet
Min Elevation | 233' feet
The 100 Mile kicks off with a legendary Pritchett Peaks hill climb—closed 364 days a year and open exclusively for runners on race day—so you can go steep and get high right from the start. A dark, thrilling descent gives way to a warm sunrise on the singletrack of the South Lake Trailhead. The relentless hills of the first 30 miles carry you around the back side of the lake to Falcons Nest for the turnaround, then across the iconic bridge and into a smooth, cruiser downhill to finish lap one. Rinse and repeat to earn your belt buckle!
Aid Station
Total Distance
Distance to Next Aid
Cut-off Time
Time of Day
Crew Access
Drop Bags
Start/Finish
0
5.8 (water only); 11.6 (full aid)
5:00 AM
Yes
Yes
Pritchett Peaks*
5.8
No
No
Start/Finish
11.6
6.15
Yes
Yes
Island View
17.75
7.4
No
No
Warm Springs
25.16
5.4(water only); 8.4 (full aid)
Yes
Yes
Wulfow*
30.63
No
No
Liberty Glen
33.6
4.4
Yes
No
Lone Rock
38
4.1 (water only); 8.25 (full aid)
Yes
Yes
Falcon’s Nest*
42.2
4.1
No
No
Lone Rock 2
46.25
4.1
Yes
Yes
Start/Finish
50.25
5.8 (water only); 11.6 (full aid)
17:00
10:00 PM
Yes
Yes
Pritchett Peaks*
56.05
No
No
Start/Finish
61.85
6.15
21:15
2:15 AM
Yes
Yes
Island View
68
7.4
No
No
Warm Springs
75.4
5.4(water only); 8.4 (full aid)
26:00
7:00 AM
Yes
Yes
Wulfow*
81.3
No
No
Liberty Glen
83.8
4.4
Yes
No
Lone Rock
88.2
4.1 (water only); 8.25 (full aid)
31:30
12:30 PM
Yes
Yes
Falcon’s Nest*
92.3
4.1
No
No
Lone Rock 2
96.4
4.1
Yes
Yes
Start/Finish
100.5
36:00
5:00 PM
Yes
Yes
Pacers
Pacers are allowed after mile 50 or after dark. Only one pacer at a time is permitted. Pacers must:
-
Wear a pacer bib
-
Sign a waiver
Crew
Crews may access:
-
Start/Finish
-
Warm Springs
-
Liberty Glen
-
Lone Rock
Crew members should fuel up in advance—there are no gas stations near the course.
Crew Driving Instructions
Crews are allowed at the Start/Finish, Warm Springs, Liberty Glen, and Lone Rock aid stations.
Note: It is a good idea to get gas the day before the race as there are no gas stations near the course.
From the Start to Lone Rock
Starting at the Visitors Center (or Start/Finish area) take Stewart Point–Skaggs Springs Road and follow it for 1.7 miles, then stay straight ahead onto Rockpile Road. Follow Rockpile Road across the bridge a total of 2.5 more miles. The aid station will be on your right.
Liberty Glen
Liberty Glen is the same as Lone Rock, but keep driving about 0.7 miles farther on Rockpile Road, take a left into the Liberty Glen area and follow the road down for about a mile or so. You will see a guard gate house — continue past it and you will see Parking Lot E on your left.
From the Start to Warm Springs
From the Visitors Center or Start/Finish, take Stewart Point–Skaggs Springs Road and follow it for 13 miles to the intersection of Old Skaggs Springs Road. Turn right on Old Skaggs Springs Road and follow it for 3 miles to the gate.
Note: This entire 16-mile stretch is on a very scenic country road that twists and turns. If you are prone to car sickness, this might possibly be an issue.
Important: Please be careful driving to the Warm Springs aid station — there is a washout near the end of the road that requires your full attention to get around safely.
Are bathrooms available on course?
Portable toilets are available at:
-
Start/Finish
-
South Lake Trailhead (Ranch at Lake Sonoma)
-
Warm Springs
-
Liberty Glen
-
Lone Rock
If nature calls between stations, please Leave No Trace and pack out toilet paper.
Drop bags will be transported to:
- Start/Finish
- Warm Springs
- Lone Rock
Drop bags are highly recommended. See the Aid Station Chart for where Drop Bags are allowed.
Distance | 51.5 Miles
Time Limit | 16 Hours
Total Estimated Elevation Gain | +10,612 feet
Max Elevation | 1,163 feet
Min Elevation | 232' feet
The Lake Sonoma 50 Mile in 2026 is going back to its roots, bringing back the original course with the iconic 2008 start at South Lake Trailhead. A few miles of road help thin the herd before launching runners onto 16 miles of sweet singletrack. Expect a faster start and the same epic finish at the bottom of the hill!
| Aid Station | Total Distance | Distance to Next Aid | Cut-off Time | Time of Day | Crew Access | Drop Bags |
| Start (The Ranch at Lake Sonoma) | 0 | 5 | 6:30 AM | No | No | |
| Island View | 5 | 7.4 | No | No | ||
| Warm Springs | 12.4 | 5.4 (water only); 8.4 (full aid) | Yes | Yes | ||
| *Wulfow | 17.8 | No | No | |||
| Liberty Glen | 20.8 | 4.4 | Yes | Yes | ||
| Lone Rock | 25.2 | 4.4 | Yes | Yes | ||
| Liberty Glen | 29.6 | 5.4 (water only); 8.4 (full aid) | Yes | Yes | ||
| *Wulfow | 35 | No | No | |||
| Warm Springs | 38 | 7.4 | Yes | Yes | ||
| Island View | 45.4 | 6.1 | No | No | ||
| Finish (Lake Sonoma Visitors Center) | 51.5 | 16 hours | 10:30 PM | Yes | Yes |
Pacers
There are no Pacers in the 50 Mile
Crew
Crews may access:
-
Start/Finish
-
Warm Springs
-
Liberty Glen
-
Lone Rock
Crew members should fuel up in advance—there are no gas stations near the course.
Crew Driving Instructions
Crews are allowed at the Start/Finish, Warm Springs, Liberty Glen, and Lone Rock aid stations.
Note: It is a good idea to get gas the day before the race as there are no gas stations near the course.
From the Start to Lone Rock
Starting at the Visitors Center (or Start/Finish area) take Stewart Point–Skaggs Springs Road and follow it for 1.7 miles, then stay straight ahead onto Rockpile Road. Follow Rockpile Road across the bridge a total of 2.5 more miles. The aid station will be on your right.
Liberty Glen
Liberty Glen is the same as Lone Rock, but keep driving about 0.7 miles farther on Rockpile Road, take a left into the Liberty Glen area and follow the road down for about a mile or so. You will see a guard gate house — continue past it and you will see Parking Lot E on your left.
From the Start to Warm Springs
From the Visitors Center or Start/Finish, take Stewart Point–Skaggs Springs Road and follow it for 13 miles to the intersection of Old Skaggs Springs Road. Turn right on Old Skaggs Springs Road and follow it for 3 miles to the gate.
Note: This entire 16-mile stretch is on a very scenic country road that twists and turns. If you are prone to car sickness, this might possibly be an issue.
Important: Please be careful driving to the Warm Springs aid station — there is a washout near the end of the road that requires your full attention to get around safely.
Are bathrooms available on course?
Portable toilets are available at:
-
Start/Finish
-
South Lake Trailhead (Ranch at Lake Sonoma)
-
Warm Springs
-
Liberty Glen
-
Lone Rock
If nature calls between stations, please Leave No Trace and pack out toilet paper.
Drop bags will be transported to:
- Start/Finish
- Warm Springs
- Lone Rock
Drop bags are highly recommended. See the Aid Station Chart for where Drop Bags are allowed.
Distance |26.6 Miles
Time Limit | 11 Hours
Total Estimated Elevation Gain | +5,903 feet
Max Elevation | 1,093' feet
Min Elevation | 231' feet
The trail marathon is the classic Lake Sonoma loop, featuring big highs and lows, refreshing water crossings, and a fast, downhill sprint to the finish from Little Flat. You get the full Lake Sonoma experience in one trail marathon—fewer miles, maximum fun (swimming is optional)!
Aid Station
Total Distance
Distance to Next Aid
Cut-off Time
Time of Day
Crew Access
Start
0
6.17
8:00 AM
Yes
Island View
6.17
7.4
No
Warm Springs
13.55
5.4 (water only); 10 (full aid)
Yes
*Wulfow
19
No
Bummer
23.5
3.3
No
Finish
26.8
Pacers
There are no Pacers in the Marathon
Crew
Crews may access:
-
Start/Finish
-
Warm Springs
-
Liberty Glen
-
Lone Rock
Crew members should fuel up in advance—there are no gas stations near the course.
Crew Driving Instructions
Crews are allowed at the Start/Finish, Warm Springs, Liberty Glen, and Lone Rock aid stations.
Note: It is a good idea to get gas the day before the race as there are no gas stations near the course.
From the Start to Lone Rock
Starting at the Visitors Center (or Start/Finish area) take Stewart Point–Skaggs Springs Road and follow it for 1.7 miles, then stay straight ahead onto Rockpile Road. Follow Rockpile Road across the bridge a total of 2.5 more miles. The aid station will be on your right.
Liberty Glen
Liberty Glen is the same as Lone Rock, but keep driving about 0.7 miles farther on Rockpile Road, take a left into the Liberty Glen area and follow the road down for about a mile or so. You will see a guard gate house — continue past it and you will see Parking Lot E on your left.
From the Start to Warm Springs
From the Visitors Center or Start/Finish, take Stewart Point–Skaggs Springs Road and follow it for 13 miles to the intersection of Old Skaggs Springs Road. Turn right on Old Skaggs Springs Road and follow it for 3 miles to the gate.
Note: This entire 16-mile stretch is on a very scenic country road that twists and turns. If you are prone to car sickness, this might possibly be an issue.
Important: Please be careful driving to the Warm Springs aid station — there is a washout near the end of the road that requires your full attention to get around safely.
Are bathrooms available on course?
Portable toilets are available at:
-
Start/Finish
-
South Lake Trailhead (Ranch at Lake Sonoma)
-
Warm Springs
-
Liberty Glen
-
Lone Rock
If nature calls between stations, please Leave No Trace and pack out toilet paper.
There are no Drop Bags for the Marathon Distance
Distance | 100 or 50 Miles - Four Runners per Team
Time Limit | TBA
Total Estimated Elevation Gain | +25,058 ft or +12,529 ft
Max Elevation | 1,754' feet
Min Elevation | 233' feet
As Lake Sonoma Shitshow Relay runners, your mission is simple: have more fun than anyone else—so much fun that 100-milers, 50-milers, and even trail marathoners remember their best moments came from running with—or encountering—you and your teammates. Don’t get it wrong: you’re still tackling the same relentless trails of Lake Sonoma. The “shitshow” part? Each relay segment varies wildly in distance and elevation, making team strategy just as crucial as your preparation. So prepare a little, run happy, run hard, and above all—don’t quit. #DeathBeforeDNF
| Aid Station | Total Distance | Distance to Next Aid | Cutoff Time | Time of Day |
| Start/Finish | 0 | 5.8 (water only); 11.6 (full aid) | 5:00 AM | |
| Pritchett Peaks* | 5.8 | |||
| Start/Finish | 11.6 | 6.15 | ||
| Island View | 17.75 | 7.4 | ||
| Warm Springs | 25.16 | 5.4(water only); 8.4 (full aid) | ||
| Wulfow* | 30.63 | |||
| Liberty Glen | 33.6 | 4.4 | ||
| Lone Rock | 38 | 4.1 (water only); 8.25 (full aid) | ||
| Falcon’s Nest* | 42.2 | 4.1 | ||
| Lone Rock 2 | 46.25 | 4.1 | ||
| Start/Finish | 50.25 | 5.8 (water only); 11.6 (full aid) | 17 hours | 10:00 PM |
What relay options are offered?
- 100 Mile Relay (4-person teams)
- 50 Mile Relay (4-person teams)
How are the relay legs structured for the 100 Mile?
Relay legs are split into two long legs and two short legs:
- Two legs of approximately 33.8 miles
- Two legs of approximately 16.8 miles
Teams choose which runner completes each leg.
How are the relay legs structured for the 50 Mile?
Relay legs are split into four different legs.
- The First Leg is from the Start/Finish to Pritchett Peaks and back; 11.6 miles
- The Second Leg is from the Start/Finish to Warm Springs; 13.6 miles
- The Third Leg is from Warm Springs to Lone Rock; 12.84 miles
- The Fourth Leg is from Lone Rock to the Finish; 12.25 miles
Teams choose which runner completes each leg.
Where are the relay exchange points?
100 Mile Relay exchanges:
- Liberty Glen
- Start/Finish
- Liberty Glen (second time)
50 Mile Relay exchanges:
- Start/Finish
- *Warm Springs
- Lone Rock
How do runner exchanges work?
Each relay team shares one bib and bib belt (provided at packet pick-up).
- The first runner picks up the bib at check-in
- At each exchange, the outgoing runner hands the bib belt to the next runner
- The bib must be worn at all times while on course
Are teams responsible for transportation between exchanges?
Yes. Relay teams are responsible for transporting runners to all exchange points.
*Important: The Warm Springs exchange requires a long, slow drive on winding roads and takes significantly more time than other locations. Teams should plan to arrive early and allow extra travel time.
Do relay runners run the same course as solo runners?
Yes and no. The Sufferfest 100 Mile and Shitshow Relays use the same 50-mile loop at Lake Sonoma.
- The 100 Mile solo race completes this loop twice.
- The 50 Mile Relay completes this loop once. Whereas, the 50 Mile solo race follows a different course.
Are aid stations available for relay runners?
Yes. Relay runners have access to the same aid stations as solo runners at designated locations.
Are pacers allowed for relay runners?
Pacers are not allowed. Relay runners may not use runners outside of their registered team.
Are relay teams eligible for awards?
Yes. Relay teams are eligible for relay-specific awards only.
Who are relays best suited for?
Relays are ideal for run clubs, groups of friends, and teams looking to experience the Lake Sonoma course while sharing the workload.
Crewing for Relay Teams
Crews may access:
-
Start/Finish
-
Warm Springs
-
Liberty Glen
-
Lone Rock
Crew members should fuel up in advance—there are no gas stations near the course.
Crew Driving Instructions
Crews are allowed at the Start/Finish, Warm Springs, Liberty Glen, and Lone Rock aid stations.
Note: It is a good idea to get gas the day before the race as there are no gas stations near the course.
From the Start to Lone Rock
Starting at the Visitors Center (or Start/Finish area) take Stewart Point–Skaggs Springs Road and follow it for 1.7 miles, then stay straight ahead onto Rockpile Road. Follow Rockpile Road across the bridge a total of 2.5 more miles. The aid station will be on your right.
Liberty Glen
Liberty Glen is the same as Lone Rock, but keep driving about 0.7 miles farther on Rockpile Road, take a left into the Liberty Glen area and follow the road down for about a mile or so. You will see a guard gate house — continue past it and you will see Parking Lot E on your left.
From the Start to Warm Springs
From the Visitors Center or Start/Finish, take Stewart Point–Skaggs Springs Road and follow it for 13 miles to the intersection of Old Skaggs Springs Road. Turn right on Old Skaggs Springs Road and follow it for 3 miles to the gate.
Note: This entire 16-mile stretch is on a very scenic country road that twists and turns. If you are prone to car sickness, this might possibly be an issue.
Important: Please be careful driving to the Warm Springs aid station — there is a washout near the end of the road that requires your full attention to get around safely.
Are bathrooms available on course?
Portable toilets are available at:
-
Start/Finish
-
South Lake Trailhead (Ranch at Lake Sonoma)
-
Warm Springs
-
Liberty Glen
-
Lone Rock
If nature calls between stations, please Leave No Trace and pack out toilet paper.
Drop bags will be transported to:
- Start/Finish
- Warm Springs
- Lone Rock
Drop bags are highly recommended. See the Aid Station Chart for where Drop Bags are allowed.
Additional Race Info
Free on-site camping is available near the start/finish area for registered participants and filled on a first come, first served basis. Please fill out the Sonoma Fall Classic Camping Form if you wish to camp or see for more details.
The Healdsburg Visitors Bureau has a useful website which will show you availability and pricing for most places nearby. Here’s a list of a few, click on each to go to that hotel’s website:
Less Expensive
Cloverdale Wine Country Inn & Suites
The Sandman Hotel, Santa Rosa
Fairview Inn & Suites, Healdsburg CA
Moderate
More Expensive
Calderwood Inn, Healdsburg
Vintner’s Inn, Santa Rosa
Healdsburg Inn on the Plaza, Healdsburg
Madrona Manor, Healdsburg
Very Expensive
Two Thirty-Five Suites, Healdsburg
Duchamp Hotel, Healdsburg
Hotel Les Mars, Healdsburg
Harmon House, Healdsburg
Hotel Vinea, Healdsburg
Flamingo Resort, Santa Rosa
La Quinta Inn & Suites by Wyndham, Santa Rosa
AC Hotel by Marriot, Santa Rosa
Wilson Artisan Lodging
Hyatt Regency Sonoma Wine Country
Typical conditions:
High: ~ 75 degrees F
Low: ~ 50 degrees F
Rain is possible, and mud should be expected if storms occur. Nighttime temperatures can feel significantly colder. Runners should aim to carry 1 Liter minimum of water in between aid stations.
Trekking poles are allowed. They are especially useful early in the race but may become cumbersome later due to narrow trails and vegetation. Collapsible poles and a quiver to stow away when they are not needed would be the best option.
Running vest with 2 Liter capacity for fluids.
Headlamp (with spare batteries or backup)
Jacket (rain jacket or windbreaker)
Gloves
Emergency thermal blanket
Race Films
Results & Photos
2026 | Live Timing Coming Soon
2025 |
Coming Soon
100 Mile
New in 2026
50 Mile
Men - 5:51:16 - Jim Walmsley (2018)
Women - 7:08:23 - Stephanie Howe (2015)
Marathon
Men - 3:02:57 - Daniel Jones (2025)
Women - 3:33:42 - Jennifer Lichter (2022)
100 Mile Relay
New in 2026
50 Mile Relay
HRC Hotties - 8:45:48 - Grace Hosbien, Rebecca Fisher, Carolyn Pietrzyk & Madison Sweat (2025)
Partners & Sponsors
