Eureka, United States of America8 August 2027
Humboldt Bay Marathon: August 8, 2027. Check the official source, compare training start dates and plan your race preparation.
Updated and verified Oct 14, 2026
Surface: Asphalt. Treat pacing as effort-first; adjust for terrain, wind, and crowding. Verify course specifics on the official site close to race day.
Humboldt Bay Marathon: August 8, 2027. Checked against the official organizer source on October 13, 2026.
The date check does not confirm entry availability, prices, course changes, cutoffs or race-week arrangements. Recheck the current athlete guide before relying on those details.
These start dates count back from the first listed race day. For a multi-day event, recalculate from your assigned day. The duration is a planning option, not proof of readiness.
Compare the start dates below, then choose a plan that fits your current training and available time.
39 weeks and 5 days remain until the listed 8 August 2027 race day.
24-week plan option
Need a printable plan? Download the Marathon training plan PDF.
Use the current organiser guide for schedules, transport, cutoffs, equipment, and other time-sensitive instructions.
Current details to confirm: start schedule, expo, bib pickup, transport, cutoffs, equipment rules, entry price.
Adaptive AI coach for iPhone
Your adaptive AI coach builds around this finish line, follows the training you complete, and adjusts upcoming work around recovery, travel, missed sessions, and race week.
The organizer lists August 8, 2027, checked October 13, 2026. Confirm your distance or division schedule and any changes on the official site.
Registration rules vary by event and year. Use the official website and registration page links above, and confirm any lottery windows, qualification rules, and transfer policies before you plan travel.
Pick a plan length that matches your base and injury history (often 16–24 weeks), then train backward from race day and include a taper.
Start conservatively, settle into rhythm, and protect the final 10K. Use effort cues if conditions change.
Compare 600 confirmed 2027 race dates by month: marathons, IRONMAN, IRONMAN 70.3 and HYROX, with official links and training-calendar guidance.
Open guideEnter a race date and plan length, see the start date, then check whether the opening week matches your current training readiness.
Open guideChoose a 12–24 week marathon plan using running consistency, long-run readiness, recovery, schedule and race-date checks, including a 26-week runway.
Open guideCalculator
Enter distance and finish time. Get pace per km/mile and a simple splits table.
Same unit as distance.
Pace / km
Pace / mile
Total time
Assumptions: steady pacing; no terrain/wind adjustments. Use this to plan, then calibrate by effort in real conditions.
Planner
A simple, repeatable plan: pick a carb target, then schedule doses you can actually execute while running.
Total time
Total carbs
Approx gels
Take a dose every 20 minutes. In training, practice the same timing so race day is automatic.
Safety note: fueling targets vary by athlete and conditions. Practice in training and adjust if you get GI distress. This is not medical advice.