Humboldt Bay Marathon
Humboldt Bay Marathon links Eureka's waterfront, the bay trail and Arcata Marsh on a flat certified course shaped by Northern California's cool coast.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 21, 2026.
Quick facts
- Level course certified for Boston qualification
- Eureka waterfront and Humboldt Bay Trail
- Arcata Marsh scenery
- August 9, 2026 coastal race
About the Humboldt Bay Marathon
The August road race showcases Humboldt Bay without overlapping the separate Humboldt Redwoods Marathon or Avenue of the Giants Marathon. Its individual full has a distinct course and entry.
Course
Marathoners use flat roads and paths between Eureka waterfront sections, the Humboldt Bay Trail and Arcata Marsh. The measured profile supports qualifying goals, with coastal wind the main natural variable.
Race-day weather
August mornings around Humboldt Bay are commonly cool, overcast and damp, with clearer skies later. Fog and wind can keep exposed sections chilly even when inland areas warm.
Past Humboldt Bay Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Sunday, August 9, 2026 | Upcoming | — |
Humboldt Bay Marathon FAQ
When is the Humboldt Bay Marathon?
The 2026 Humboldt Bay Marathon is on Sunday, August 9, 2026.
How do I register for the Humboldt Bay Marathon?
You can register for the Humboldt Bay Marathon at runzy.com.
Can I use the Humboldt Bay Marathon for Boston qualifying?
Marathon Scout marks the Humboldt Bay Marathon as a Boston qualifier. Check the current Boston qualifying times and confirm current certification with the race before registering.
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