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Built on bad decisions in Boulder, CO.

Trail Sisters Half Marathon at Lake Sonoma

Basic Listing
  1. Trail Sisters LLC
  2. 2026 Edition

A welcoming women's point-to-point through wine country trails with a five-hour cutoff

Directions
Registration OpensOctober 01, 2025
DeadlineApril 10, 2026
This event took place on April 11, 2026

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All trail races in California→
April 11, 2026
Saturday 9:30am PDT start
Geyserville, CA
United States
13.1 miles
Point to Point Course
2,100 ft
Elevation Gain
Open Registration
No lottery
No Service Requirement
Does not require trail or volunteer work
No Qualifier
No qualifier race required
Beginner Friendly
Suitable for first-timers
Links
WebsiteInstagramFacebook
2008
Established

What Makes It Great

The Trail Sisters Half Marathon runs point-to-point from Lone Rock Parking Lot to the Lake Sonoma Visitor Center, traversing lakeside singletrack out-and-back before crossing the scenic Lake Sonoma bridge and descending to the festival finish. Open to women and non-binary runners, the event centers on community, camaraderie, and inclusivity, with a generous five-hour cutoff that welcomes first-time trail runners alongside experienced veterans. A free shuttle returns runners to the Lone Rock start area after the festival finish.

Difficulty

Entry-Level
2/10

Suitable for first-timers

Technical Terrain

Finish Awards

Trail Sisters Finisher Mug
All finishers receive a custom Trail Sisters finisher mug.

Trail Sisters Half Marathon at Lake Sonoma

Geyserville, CA, United StatesApril 11, 2026

April 11, 2026
Course map for Trail Sisters Half Marathon at Lake Sonoma
DistDistance13.1 mi
GainElevation Gain2,100 ft
LimitCutoff5 h

Entry Timeline

Registration OpensOctober 01, 2025
Registration DeadlineApril 10, 2026
Race DayApril 11, 2026

Lottery

This event uses open registration - no lottery entry required.

Qualifier

This event does not require a qualifier for entry.

Service Requirement

This race does not have a service requirement for entry.
13.1 mi
Distance
Point to Point
Route
5h
Cutoff Time
879 ft
Average Elevation
2,100 ft
Total Ascent
3,050 ft
Total Descent
1,322 ft
High Point
226 ft
Low Point
Course map
Launch Course Explorer

Aid Stations

LocationMileElevation
Start
Start
0.01,165 ft
Oak Knoll
Aid Station
3.6558 ft
Archery
Aid Station
6.21,178 ft
Bummer
Aid Station
9.71,102 ft
Finish
Finish
13.2226 ft

Sign in to see cutoffs, crew access, drop bags, and services for every aid station.

On-Site Camping Available

Vehicle and tent camping permitted Friday and Saturday nights right next to the start/finish at the Lake Sonoma Visitor Center. No reservation required. Cars and Sprinter-style vans only in the lot — no trailers, tow-behinds, or pop-outs. Tent camping in designated areas only. Quiet hours 9pm–4am.

Crew Access Points

Pacer Rules

No Pacers Allowed

Crew Rules

No Crew Allowed

Gear Rules

No trekking poles

Required Gear

No required gear specified

Recommended Gear

No recommended gear specified

Videos from other Lake Sonoma events

Stephen Kersh - 2025 Lake Sonoma 50 Mile Winner - Post Race Interview
Stephen Kersh - 2025 Lake Sonoma 50 Mile Winner - Post Race Interview
Lake Sonoma 100K
Mountain Outpost•2025
Tara Dower - Lake Sonoma 50 Mile Finish & Post Race Interview
Tara Dower - Lake Sonoma 50 Mile Finish & Post Race Interview
Lake Sonoma 100K
Mountain Outpost•2025

Race reports from other Lake Sonoma events

2024 Lake Sonoma 50 Race ReportLake Sonoma 100K
By Joseph Barrett • 2024
Lake Sonoma 50 Race Recap & RecommendationsLake Sonoma 100K
By Believe in the Run • 2024
2023 Lake Sonoma 50 Mile Results: Victory for Drew Holmen and Erin ClarkLake Sonoma 100K
By iRunFar • 2023

Reviews

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Register•April 11, 2026