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.
Quick facts
- Level course certified for Boston qualification
- Eureka waterfront and Humboldt Bay Trail
- Arcata Marsh scenery
- Coastal fog that keeps the race cool while inland warms
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 | Completed | Open results |
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Humboldt Bay Marathon FAQ
When is the Humboldt Bay Marathon?
We're waiting for the finalized date for the 2027 Humboldt Bay Marathon. The most recent running was on Sunday, August 9, 2026.
Is Humboldt Bay Marathon a Boston qualifier?
Yes. Humboldt Bay Marathon is a Boston Marathon qualifier. To use the result, you must run the certified full-marathon course within the qualifying window and meet the current standard for your age and gender. Meeting the standard lets you apply but does not guarantee entry, and net-downhill courses can receive a time adjustment under current B.A.A. rules. Review the Boston qualifying times and downhill-course rules, or browse upcoming Boston qualifier marathons.
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