Skagit Flats Marathon
Burlington, United States of America · Sunday 13 September 2026
RoadFull Marathon
Set in Burlington, Washington in September 2026, the Skagit Flats Marathon delivers exactly what its name promises: a genuinely flat course that sits just above sea level with virtually no meaningful elevation to fight. This is a road marathon built for runners chasing a fast time or those who want to conserve energy for a strong finish, since the gently rolling terrain means you won't spend the second half battling steep climbs. The 42.2-kilometer loop stays true to the Pacific Northwest lowlands, which typically means cool weather and potentially damp conditions by late summer, so prepare accordingly for the seasonal climate. If you're targeting a personal best or need a confidence-building race on forgiving terrain, this one checks the box without the pretense.
Difficulty Calculator
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:m
:s
Adjusted Time
3:53:59
Time difference: -6.0 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain28m
Elevation High11m
Elevation Low1m
How hard is Skagit Flats Marathon?
Easyharder than 15% of marathons
Flattest / easiestHardest
On our difficulty model, Skagit Flats Marathon plays about 1 minute faster than an average road marathon for a 3:30 runner. It ranks #983 hardest of 1150 marathons we analyse, and #460 of 575 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 Skagit Flats 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 Skagit Flats Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:54:55 | −05:05 |
| 3:30:00 | 3:24:29 | −05:31 |
| 4:00:00 | 3:53:59 | −06:01 |
| 4:30:00 | 4:23:24 | −06:36 |
| 5:00:00 | 4:52:44 | −07:16 |
| 5:30:00 | 5:22:02 | −07:58 |
| 6:00:00 | 5:51:15 | −08:45 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Skagit Flats Marathon 2026 Course Analysis
Skagit Flats Marathon is a full marathon held in Burlington, United States of America. It is scheduled for Sunday 13 September 2026. The course is run on road surface with 28m of total climbing, with its high point near 11m above sea level.
Elevation Profile
This is a very flat course, with only 28m 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.
Surface Type: Road
Skagit Flats 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 Skagit Flats Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Skagit Flats Marathon fits your goal, these courses play out about the same on our difficulty model.
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