Expected October 2027
Distance
Climb
Start Time
Cutoff
Terrain
The Sonoma Fall Classic is the new autumn home of the original Lake Sonoma 50 Mile, joined by a 100 mile, a trail marathon, a half marathon and four person relays. Almost all of the running happens on rolling to downright relentless singletrack above Lake Sonoma, with long climbs, an exposed ridge or two, a crossing of the iconic bridge and a fast descent to the finish. The 100 mile and the 100 mile relay cover the 50 mile loop twice, the marathon takes in the classic Lake Sonoma loop, and the half marathon runs point to point along the shoreline. Free camping at the start and finish, post race shuttles back to each remote start line and a harvest-season setting in Sonoma County wine country fill out the weekend.
The Pritchett Peaks climb, open to runners only on race day
Miles of singletrack with majestic views over Lake Sonoma
The iconic bridge crossing and the fast descent to the finish
Wine country scenery during harvest season
Free on-site camping at the start and finish
Start / Finish
The 100 Mile, both Relays and the Marathon start at Lake Sonoma Recreation Area, 3227 Stewarts Point-Skaggs Springs Rd, Geyserville, CA 95441. The 50 Mile starts at The Ranch at Lake Sonoma, 100 Lake Sonoma Overlook Rd, Geyserville, CA 95441. The Half Marathon starts at Liberty Glen Campground, Geyserville, CA 95441
All races finish at Lake Sonoma Recreation Area, 3227 Stewarts Point-Skaggs Springs Rd, Geyserville, CA 95441
Terrain
Route
Race Day
What you get
Finisher t-shirt
Chip timing
Race photos
Race shirt if ordered by September 15
Belt buckle for 100 Mile finishers
Free on-site camping for registered participants
Post race shuttle back to remote start lines
Live timing
On the day
Toilets
Bag drop
Food vendors
Merchandise
Marshals on course
First aid on course
Before you enter
Other questions
There are two relay options, both for teams of four runners: a 100 Mile Relay and a 50 Mile Relay.
Relay legs are split into two long legs and two short legs. Two runners each cover approximately 33.8 miles, and two runners each cover approximately 16.8 miles. Teams choose which runner completes each leg.
The 50 Mile Relay is split into four legs. Leg one runs from the Start/Finish to Pritchett Peaks and back (11.6 miles), leg two runs from the Start/Finish to Warm Springs (13.6 miles), leg three runs from Warm Springs to Lone Rock (12.84 miles) and leg four runs from Lone Rock to the finish (12.25 miles). Teams choose which runner completes each leg.
For the 100 Mile Relay the exchanges are at Liberty Glen, the Start/Finish and Liberty Glen a second time. For the 50 Mile Relay the exchanges are at the Start/Finish, Warm Springs and Lone Rock.
Each relay team shares one bib and bib belt, which is provided at packet pickup. The first runner collects the bib at check-in, and 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.
Entry fee
Registration isn't open yet. We'll show pricing when the organiser confirms.Geyserville, USA
Expected October 2027
Provisional date, around Oct 16More races like this one
Not open yet
