Green River Marathon
Kent, United States of America · Sunday 6 June 2027
RoadFull Marathon
The Green River Marathon in Kent offers a flat to gently rolling road course that won't punish your legs with serious climbing, making it a solid choice if you're after a fast time or running your first marathon in June 2026. The minimal elevation change, staying between sea level and just 12 meters above it, means you can focus on pace and effort rather than battling hills. Road running means consistent footing and predictable conditions, though you'll want to check the weather forecast for that time of year since summer temperatures can affect your pacing strategy. This is the kind of course where your training and fitness do the talking, without the course itself becoming a major variable. If you're looking to PR or test your legs on forgiving terrain, this one's worth checking out through the race website for entry details and course specifics.
Difficulty Calculator
h
:m
:s
Adjusted Time
3:52:32
Time difference: -7.5 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain0m
Elevation High12m
Elevation Low0m
How hard is Green River Marathon?
Easyharder than 6% of marathons
Flattest / easiestHardest
On our difficulty model, Green River Marathon plays about 2 minutes faster than an average road marathon for a 3:30 runner. It ranks #1078 hardest of 1151 marathons we analyse, and #527 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 Green River 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 Green River Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:54:09 | −05:51 |
| 3:30:00 | 3:23:24 | −06:36 |
| 4:00:00 | 3:52:32 | −07:28 |
| 4:30:00 | 4:21:33 | −08:27 |
| 5:00:00 | 4:50:29 | −09:31 |
| 5:30:00 | 5:19:18 | −10:42 |
| 6:00:00 | 5:48:03 | −11:57 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Green River Marathon 2027 Course Analysis
Green River Marathon is a full marathon held in Kent, United States of America. It is scheduled for Sunday 6 June 2027. The course is run on road surface with 0m of total climbing, with its high point near 12m above sea level.
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.
Surface Type: Road
Green River 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 Green River Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Green River Marathon fits your goal, these courses play out about the same on our difficulty model.
Other Marathons in United States of America
Garmin Kansas City Marathon
Kansas City, United States of America
Road308m gainOct 2026
Blue Sky Marathon
Fort Collins, United States of America
Road1064m gainOct 2026
Mankato Marathon
Mankato, United States of America
Trail277m gainOct 2026
Jackson Hole Marathon
Jackson, United States of America
Trail173m gainOct 2026
Cannonball Marathon
Greensboro, United States of America
Road0m gainOct 2026
Baltimore Marathon
Baltimore, United States of America
Road298m gainOct 2026