The 15 50K ultramarathons in Massachusetts, with each one's climb, cutoff and date. Every race links to its own page, where you can see how it fits the runner you are now.
| Race | Distance | Where | Date | Climb | Cutoff |
|---|---|---|---|---|---|
| Free to Run Trail Races | 50 KM | Pittsfield, MA | Sep 12, 2026 | 6,000 ft | 12 h |
| Notchview Invitational | 50 KM | Windsor, MA | Sep 26, 2026 | — | 9 h |
| Womp Romp | 50 KM | Hingham, MA | Oct 24, 2026 | 2,000 ft | 9 h |
| TARC Winter Classic | 32 Miles | Stoneham, MA | Dec 5, 2026 | 5,600 ft | 11 h |
| Seth's Fat Ass | 50 KM | Springfield, MA | Dec 19, 2026 | — | 9 h |
| TARC Yeti Trail Trot | 50 KM | Hamilton, MA | Jan 2, 2027 | — | 7 h |
| Mt. Toby Ultra | 50 KM | Sunderland, MA | Apr 3, 2027 | 6,100 ft | 9 h |
| TARC Don't Run Boston | 50 KM | Milton, MA | Apr 18, 2027 | 4,800 ft | 11.5 h |
| TARC Spring Classic 50 km | 50 KM | Weston, MA | Apr 24, 2027 | — | 8 h |
| Watuppa Trail Races | 50 KM | Fall River, MA | May 8, 2027 | — | 9 h |
| Tails & Trails State Forest Run | 50 KM | Pittsfield, MA | May 15, 2027 | — | 9 h |
| Chesterfield Gorge Ultra | 50 KM | West Chesterfield, MA | May 29, 2027 | 6,100 ft | 9 h |
| Edge Hill Trail Race | 50 KM | Ashfield, MA | Jun 12, 2027 | 4,000 ft | 9 h |
| TARC Summer Classic | 50 KM | Medfield, MA | Aug 14, 2027 | — | 11 h |
| TARC Fall Classic 50 km | 50 KM | Carlisle, MA | Sep 4, 2027 | 2,200 ft | 12 h |