California · 100 Mile Sufferfest · 100 Mile Relay · 50 Mile Relay
Sonoma Fall Classic
Sonoma Fall Classic is a 100 Mile Sufferfest, 100 Mile Relay, 50 Mile Relay, Lake Sonoma 50 Mile and Sonoma Trail Marathon event held in Healdsburg, California. It was last held on October 17, 2026 and is usually run in October; the next date hasn't been announced yet. About 26 runners take part across all distances.
- Usually held
- October
- Location
- Healdsburg, CA
- Field size
- ~26 runners
Race details
- Last held
- October 17, 2026
- Usually held in
- October
- Location
- Healdsburg, California
- Distances
- 100 Mile Sufferfest, 100 Mile Relay, 50 Mile Relay, Lake Sonoma 50 Mile, Sonoma Trail Marathon, Half Marathon
- Field size
- About 26 runners
- Registration
- ultrasignup.com
- Official website
- sonomafallclassic.com
Registration, course & weather
- Registration status
- Registration status as last checked September 28, 2026: open
- Entry fee
- Listed fee for the longest distance, $115 (from sonomafallclassic.com, checked September 28, 2026)
- Start time
- 6:30 AM PDT
- Course profile — 50 Mile
- Out-and-back course; Trail surface; Not USATF certified
- Course profile — Half Marathon
- Loop course; Trail surface; Not USATF certified
- Course profile — 100 Mile
- Loop course; Trail surface; Not USATF certified
- Course profile — Marathon
- Point-to-point course; Trail surface; Not USATF certified; Not a Boston qualifier
About the Sonoma Fall Classic
The Sonoma Fall Classic is an Aravaipa Running-presented trail festival at Lake Sonoma, California, pairing the historic Lake Sonoma 50 Mile with a new 100 Mile "Sufferfest," a trail marathon, half marathon, and relay options on rolling singletrack through wine country during harvest.
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Guides from the RaceRove blog
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Sonoma Fall Classic: common questions
- When is the Sonoma Fall Classic?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the Sonoma Fall Classic held?
- In Healdsburg, California.
- What distances does the Sonoma Fall Classic offer?
- 100 Mile Sufferfest, 100 Mile Relay, 50 Mile Relay, Lake Sonoma 50 Mile, Sonoma Trail Marathon and Half Marathon.
- How many people run the Sonoma Fall Classic?
- About 26 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Sonoma Fall Classic?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Sonoma Fall Classic?
- Registration status as last checked September 28, 2026: open. Listed fee for the longest distance, $115 (from sonomafallclassic.com, checked September 28, 2026).
- What time does the Sonoma Fall Classic start?
- 6:30 AM PDT.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.