California · 50K · Trail Marathon · 17 Miler
Trail Run at Sly Park - Fall
Trail Run at Sly Park - Fall is a 50K, Trail Marathon, 17 Miler, half marathon and 8 Miler event held in Pollock Pines, California. It was last held on October 24, 2026 and is usually run in October; the next date hasn't been announced yet. About 100 runners take part across all distances.
- Usually held
- October
- Location
- Pollock Pines, CA
- Field size
- ~100 runners
Race details
- Last held
- October 24, 2026
- Usually held in
- October
- Location
- Pollock Pines, California
- Distances
- 50K, Trail Marathon, 17 Miler, Half Marathon, 8 Miler, 10K, 5K
- Field size
- About 100 runners
- Course
- 538 ft gain (5K) up to 5,000 ft gain (50K), per official course pages
- Registration
- ultrasignup.com
- Official website
- tctruns.com
Registration, course & weather
- Registration status
- Registration status as last checked September 28, 2026: open
- Start time
- 8:00 AM PDT
- Course profile — 10K
- Out-and-back course; Mostly trail, some road; 866 ft gain, 866 ft loss (official course data)
- Course profile — Half Marathon
- Lollipop course (a loop with an out-and-back section); Mostly trail, some road; 1739 ft gain, 1739 ft loss (official course data)
- Course profile — Trail Marathon
- Loop course; Mostly trail, some road; 4032 ft gain, 4032 ft loss (official course data)
- Course profile — 5K
- Out-and-back course; Mostly trail, some road; 538 ft gain, 538 ft loss (official course data)
- Course profile — 8 Mile
- Loop course; Mostly trail, some road; 984 ft gain, 984 ft loss (official course data)
- Course profile — 17 Mile
- Loop course; Mostly trail, some road; 2539 ft gain, 2539 ft loss (official course data)
- Course profile — 50K
- Loop course; Mostly trail, some road; 5000 ft gain, 5000 ft loss (official course data)
- Typical race-day weather
- about 50°F at the start, 76% humidity, 4 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 28, 2026)
About the Trail Run at Sly Park - Fall
The Trail Run at Sly Park (Fall) circles Jenkinson Lake in the Sly Park Recreation Area under an El Dorado National Forest permit, offering seven distances from 5K to 50K on shaded single-track and horse trails. Held under a 100-runner field cap, it features two lakeside aid stations and finishes back at the Event Center with a hot meal and ice cream for finishers.
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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.
Trail Run at Sly Park - Fall: common questions
- When is the Trail Run at Sly Park - Fall?
- 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 Trail Run at Sly Park - Fall held?
- In Pollock Pines, California.
- What distances does the Trail Run at Sly Park - Fall offer?
- 50K, Trail Marathon, 17 Miler, Half Marathon, 8 Miler, 10K and 5K.
- How many people run the Trail Run at Sly Park - Fall?
- About 100 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 Trail Run at Sly Park - Fall?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Trail Run at Sly Park - Fall?
- Registration status as last checked September 28, 2026: open. Listed fee for the longest distance, $55 (from tctruns.com, checked September 28, 2026).
- What time does the Trail Run at Sly Park - Fall start?
- 8:00 AM PDT.
- What is race-day weather usually like at the Trail Run at Sly Park - Fall?
- about 50°F at the start, 76% humidity, 4 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 28, 2026).
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