12th Humboldt Bay2027

Sun, 8 Aug 2027 · Eureka, CA · 279 days

Distance: 21.1 km
Race day: 14°C (56°F)

Course details aren't published yet. Check the official site

Come join the amazing Humboldt County running community and take advantage of our perfect August running weather! The courses are almost entirely on the Eureka Waterfront Trail and the Humboldt Bay Trail along the east shore of Humboldt Bay. These courses are FLAT and FAST! Total elevation gain for the half marathon is less than 100 feet (most of our pace team measured between 75 feet and 85 feet in 2026), and the marathon is only slightly more. The highest elevation on the entire course is less than 20 feet above sea level. With early morning temperatures in the low to mid 50s and overcast skies, conditions are likely to be perfect for your Boston Qualifying time or a new PR. Runners always comment on how much fun the aid stations bring to the event. With a marathon and half marathon, there's something for everyone! New for 2027 will be the final piece of the Eureka Waterfront Trail, a completely repaved half mile section between J Street and T Street. This will keep the course right on the bayfront past the idyllic Woodley Island Marina. The course will be almost identical to 2025 and 2026 except that this half mile stretch will be shifted onto the newly paved trail. Humboldt Bay Marathon is a nonprofit organization dedicated to promoting fitness, outdoor recreation, and trails in Humboldt County CA. All proceeds of our events after expenses are donated to other local nonprofit groups that are aligned with our goals.

Before you go

Pro tips

Racing it

01
Flat and Fast
The course is nearly flat: total climb is under 100 feet for the half and only slightly more for the marathon, with the highest point less than 20 feet above sea level. Expect fast times.
From the description
02
New Pavement
The 2027 course includes a repaved half-mile section from J Street to T Street along the bayfront past Woodley Island Marina. It's a smooth, scenic stretch.
From the description
03
Trail Route
The route is almost entirely on the Eureka Waterfront Trail and Humboldt Bay Trail along the east shore of Humboldt Bay. It's a waterfront trail run.
From the description
04
Aid Station Fun
The aid stations are a celebrated part of this race, known for bringing fun to the event. Use them for motivation and refueling on the flat course.
From the description

In Eureka

Getting Around
Eureka's downtown and Old Town are compact and walkable, so you can reach the waterfront trail and many race points on foot.
Spectator Spots
Spectators can watch from the Eureka Boardwalk or Woodley Island Marina, both close to the waterfront trail. These spots offer views of runners and the bay.
Post-Race Recovery
After the race, explore Old Town's Victorian architecture or take a slow walk in a waterfront park. The cool coastal air is refreshing for recovery.

Written by AI from the course data and the race's description; city tips are general knowledge. Check race-day details with the organizer.

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