Humboldt Redwoods Marathon
Humboldt Redwoods Marathon runs beneath towering old-growth trees on the Avenue of the Giants, pairing cool forest conditions with a fast certified course.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 21, 2026.
Quick facts
- Boston qualifier on the Avenue of the Giants.
- Old-growth redwood forest for most of the course.
- Gently rolling, paved out-and-back route.
About the Humboldt Redwoods Marathon
This Northern California classic is built around Humboldt Redwoods State Park and the Avenue of the Giants. The intimate setting and sheltered road make it a memorable destination qualifier.
Course
The certified out-and-back road course follows gently rolling pavement under dense redwood canopy. A few gradual grades matter, but the profile remains friendly to steady pacing.
Race-day weather
October in the redwoods is typically cool, shaded, and damp, with light rain possible. Temperatures change little under the canopy, while exposed patches can warm.
Past Humboldt Redwoods Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Sunday, October 11, 2026 | Upcoming | — |
| 2025 | Sunday, October 12, 2025 | Completed | Open results |
| 2024 | — | Completed | Open results |
Humboldt Redwoods Marathon FAQ
When is the Humboldt Redwoods Marathon?
The 2026 Humboldt Redwoods Marathon is on Sunday, October 11, 2026.
How do I register for the Humboldt Redwoods Marathon?
Registration for the 2026 Humboldt Redwoods Marathon has not been posted yet.
Can I use the Humboldt Redwoods Marathon for Boston qualifying?
Marathon Scout marks the Humboldt Redwoods Marathon as a Boston qualifier. Check the current Boston qualifying times and confirm current certification with the race before registering.
Featured collections
Send Marathon Scout an official race update
Send us confirmed dates, registration links, results, live tracking, or course changes. Every update is reviewed before it goes live.