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DISTANCE
13.1 Miles
ELEVATION GAIN
2,833
CUT OFF
5 Hours
START TIME
10:00am
The Trail Sisters (TS) Half Marathon is a women’s only event. It was created to foster encouragement and camaraderie amongst all abilities and experience levels. The new course starts at Lone Rock Trailhead and will finish at the Visitors Center. True to its label, you can expect relentless rolling hills that will challenge your mind and body. Do not worry though, you will share the journey with a community of supportive Trail Sisters to help you through! You will have 5 hours to complete the half marathon course.
*** Free shuttle service from finish line back to start to pick up your vehicle ***
Skratch Labs drink mix and chews will be provided on course.
Aid Station | Mile | Next Aid | Cut Off |
|---|---|---|---|
Shore | 4 | 3.1 | |
Lone Rock | 7.1 | 3.4 | 12:30 am (2.5 hrs) |
Bummer | 10.5 | 3.1 | |
Finish | 13.6 |
Runners who do not think they can finish the race should drop at Lone Rock. Bummer aid station is not easily accessible and does not have staff to assist with shuttling runners back to the start/finish area.
There will be three on course aid stations for the half marathon course. Each aid station will have water, electrolyte drink, and general race snacks. You will share the Bummer aid station with the marathon runners, so expect to enjoy a few more snack options there.
Please monitor your fluid requirements carefully. Early and often is a great rule of thumb! If it’s warm you will likely need more than one bottle or flask. Every runner must carry at least one water bottle.
Lake Sonoma 50, Marathon and Trail Sisters Half Marathon are owned and operated by Trail Sisters LLC. All Rights Reserved © 2025
