2026 - Timberline Marathon
2026 distances
Trail running
Marathon - Saturday
Half Marathon - Saturday
You must be able to complete the course within 4.5 hours for the half marathon.
Half Marathon - Sunday
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 1 Clackamas Lake Historic Ranger Station event
Spotted something wrong? Tell us and we'll fix it.