Bellingham Bay Marathon
Bellingham, United States of America · Monday 20 September 2027
Bellingham Bay Marathon, held on September 25, 2025, in Bellingham, Washington, is a scenic event known for its stunning views of Bellingham Bay, the San Juan Islands, and the North Cascades mountains. The course is often described as one of the most beautiful road races in the Pacific Northwest. The event features a full marathon, half marathon, 10K, and 5K, making it accessible to runners of all levels.
Difficulty Calculator
h
:m
:s
Adjusted Time
3:52:10
Time difference: -7.8 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain0m
Elevation High50m
Elevation Low2m
Weather Forecast
High20°C
Low9°C
Chance of Rain0%
How hard is Bellingham Bay Marathon?
Easyharder than 5% of marathons
Flattest / easiestHardest
On our difficulty model, Bellingham Bay Marathon plays about 2 minutes faster than an average road marathon for a 3:30 runner. It ranks #1098 hardest of 1151 marathons we analyse, and #543 of 576 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Bellingham Bay Marathon?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Bellingham Bay Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:53:55 | −06:05 |
| 3:30:00 | 3:23:06 | −06:54 |
| 4:00:00 | 3:52:10 | −07:50 |
| 4:30:00 | 4:21:07 | −08:53 |
| 5:00:00 | 4:49:58 | −10:02 |
| 5:30:00 | 5:18:43 | −11:17 |
| 6:00:00 | 5:47:23 | −12:37 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Bellingham Bay Marathon 2027 Course Analysis
Bellingham Bay Marathon is a full marathon held in Bellingham, United States of America. It is scheduled for Monday 20 September 2027. The course is run on road surface with 0m of total climbing, with its high point near 50m above sea level. For registration and full race details, visit the official Bellingham Bay Marathon website.
Elevation Profile
This is a very flat course, with only 0m of total climbing and little change in altitude throughout. Flat profiles let you hold an even pace from start to finish, which makes this a fast, PB-friendly race.
Expected Race Day Weather
Based on historical weather data for September, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 9°C to 20°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a low chance of rain (0%), so dry conditions are likely.
Surface Type: Road
Bellingham Bay Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare Bellingham Bay Marathon against other marathons to find the right race for your goals.
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