
Dexter, United States of America · Monday 31 May 2027
A point-to-point half marathon along the beautiful Huron River, this race takes runners from Dexter to Ann Arbor, offering a scenic, rolling course with plenty of shade and natural beauty. The route follows Huron River Drive, a picturesque, tree-lined road that provides a mix of gentle hills and fast downhill sections, making it an ideal course for strong finishing times. The race is well-supported, with enthusiastic volunteers, local cheer squads, and well-placed aid stations.
Adjusted Time
4:16:47
Time difference: +16.8 minutes compared to a flat, road, temperate course.
On our difficulty model, Dexter-Ann Arbor Run plays about 18 minutes slower than an average road marathon for a 3:30 runner. It ranks #270 hardest of 1150 marathons we analyse, and #149 of 575 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
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 Dexter-Ann Arbor Run | Difference |
|---|---|---|
| 3:00:00 | 3:08:47 | +08:47 |
| 3:30:00 | 3:42:37 | +12:37 |
| 4:00:00 | 4:16:47 | +16:47 |
| 4:30:00 | 4:51:14 | +21:14 |
| 5:00:00 | 5:25:57 | +25:57 |
| 5:30:00 | 6:00:57 | +30:57 |
| 6:00:00 | 6:36:11 | +36:11 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Dexter-Ann Arbor Run is a full marathon held in Dexter, United States of America. It is scheduled for Monday 31 May 2027. The course is run on road surface with 186m of total climbing, with its high point near 272m above sea level. For registration and full race details, visit the official Dexter-Ann Arbor Run website.
With 186m of total climbing, this is a gently undulating course. The elevation changes are manageable for most runners and shouldn't greatly affect your pacing.
Based on historical weather data for May, the expected race day conditions are as follows. Hot conditions are expected, with temperatures between 20°C and 30°C. Heat is one of the biggest performance factors in distance running - for every degree above 15°C, finish times can slow by roughly 1-2%. Extra hydration and a conservative start are strongly recommended. There is a moderate chance of rain (22%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.
Dexter-Ann Arbor Run 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 Dexter-Ann Arbor Run against other marathons to find the right race for your goals.
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