South Hero, United States of America · Sunday 19 October 2025
Official Website →Green Mountain Marathon, held in October in South Hero, Vermont, is a scenic event that takes place on the west shore of South Hero and Grand Isle. The course is certified by USA Track and Field and features a flat to rolling terrain, with about half of the route being on hard-packed dirt roads. The race starts and finishes near the house where Clarence H. DeMar, a seven-time Boston Marathon winner, once lived.\n\nThe event is organized by runners for runners, aiming to provide a quality maratho
Adjusted Time
4:06:10
Time difference: +6.2 minutes compared to a flat, road, temperate course.
| Surface | Road |
| Elevation Gain | 340m |
| Elevation High | 64m |
| Elevation Low | 29m |
| Predicted High | 21°C |
| Predicted Low | 12°C |
| Chance of Rain | 2% |