Available distances
About
The Millersylvania Trail Races in Olympia, Washington, offer four trail distances, 5K, 10K, 25K and 50K (31 miles), plus a 12-hour race, on August 28, 2027.
The courses follow wooded trails typical of the Pacific Northwest. This range of distances makes the event accessible to a wide audience, from beginner trail runners to those looking for an ultra, so everyone can choose a format that suits their training, from the family-friendly 5K to the more demanding 50K.
Highlights
- Off-road
- Forest
Prepare for Millersylvania Trail Races with RunRun
An AI-generated training plan, adjusted every week based on your real sessions. Built around your goal, current level and race date.
- Personalized plan based on your VO2max, history and weekly availability
- Strava and Garmin sync: your sessions are analyzed and the plan adapts
- Target paces, long runs, key sessions: everything is calculated for race day
Races nearby
Other upcoming races around Olympia.
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Holmes Chiropractic Care Gig Harbor Turkey Trot!
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Dec 12, 2026 · Tacoma, WA · 26 mi away
13.1 mi · 6.2 mi · 3.1 mi