
Waitsfield, United States of America · Monday 12 July 2027
The Mad Marathon is an annual marathon event held in the Mad River Valley of Central Vermont, first established in 2011. It consistently attracts participants from all 50 U.S. states, various territories, and over 34 countries, reflecting its international appeal and community focus. The event includes a full marathon, half marathon (Mad Half), team relays, and, more recently, 5K and 10K races to accommodate families and runners of varying abilities.
Adjusted Time
5:09:07
Time difference: +69.1 minutes compared to a flat, road, temperate course.
On our difficulty model, Mad Marathon plays about 63 minutes slower than an average road marathon for a 3:30 runner. It ranks #38 hardest of 1150 marathons we analyse, and #9 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 Mad Marathon | Difference |
|---|---|---|
| 3:00:00 | 3:47:28 | +47:28 |
| 3:30:00 | 4:28:03 | +58:03 |
| 4:00:00 | 5:09:07 | +1:09:07 |
| 4:30:00 | 5:50:41 | +1:20:41 |
| 5:00:00 | 6:32:46 | +1:32:46 |
| 5:30:00 | 7:15:22 | +1:45:22 |
| 6:00:00 | 7:58:27 | +1:58:27 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Mad Marathon is a full marathon held in Waitsfield, United States of America. It is scheduled for Monday 12 July 2027. The course is run on trail surface with 650m of total climbing, with its high point near 461m above sea level. For registration and full race details, visit the official Mad Marathon website.
This is a very challenging course with 650m of total climbing - well above the average trail marathon - topping out around 461m above sea level. Hill training is essential, and you should expect a slower finish time than on a flat course.
Based on historical weather data for July, the expected race day conditions are as follows. Moderate temperatures between 13°C and 27°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance on race day. There is a low chance of rain (1%), so dry conditions are likely.
Mad Marathon is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are usually slower than the road equivalent - often by 10-20% - because of uneven footing, technical sections, and frequently steeper gradients, though a smooth, non-technical or downhill trail can run faster than that suggests. Trail-specific shoes with good grip are recommended.
Looking for an easier marathon or a tougher challenge? You can also compare Mad Marathon against other marathons to find the right race for your goals.
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