Ultramarathons in Massachusetts

All 33 ultramarathons in Massachusetts, from 50K to 200 miles, with the climb, the cutoff and the date for each. 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
MetroWest Backyard Ultra	Backyard (4.167-mile yards)	Sudbury, MA	Sep 26, 2026	340 ft	—
Notchview Invitational	50 KM	Windsor, MA	Sep 26, 2026	—	9 h
Notchview Invitational	50 Miles	Windsor, MA	Sep 26, 2026	—	24 h
Dead Last Ultra	Backyard (4.167-mile yards)	Sutton, MA	Oct 24, 2026	—	—
Womp Romp	50 KM	Hingham, MA	Oct 24, 2026	2,000 ft	9 h
Race for DFL	Backyard (4.167-mile yards)	Westfield, MA	Nov 7, 2026	200 ft	—
TARC Stone Cat Trail Festival	50 Miles	Ipswich, MA	Nov 7, 2026	4,676 ft	12.5 h
TARC Stone Cat Trail Festival	100 KM	Ipswich, MA	Nov 7, 2026	5,500 ft	14 h
TARC Winter Classic	32 Miles	Stoneham, MA	Dec 5, 2026	5,600 ft	11 h
TARC Winter Classic	40 Miles	Stoneham, MA	Dec 5, 2026	7,000 ft	—
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 Don't Run Boston	50 Miles	Milton, MA	Apr 18, 2027	6,530 ft	13.5 h
TARC Spring Classic 50 km	50 KM	Weston, MA	Apr 24, 2027	—	8 h
TARC Wapack and Back	43 Miles	Ashburnham, MA	May 8, 2027	9,200 ft	12 h
TARC Wapack and Back	50 Miles	Ashburnham, MA	May 8, 2027	10,800 ft	14.5 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	100 Miles	West Chesterfield, MA	May 29, 2027	—	30 h
Chesterfield Gorge Ultra	50 KM	West Chesterfield, MA	May 29, 2027	6,100 ft	9 h
Chesterfield Gorge Ultra	50 Miles	West Chesterfield, MA	May 29, 2027	3,750 ft	13.5 h
Chesterfield Gorge Ultra	100 KM	West Chesterfield, MA	May 29, 2027	—	19 h
Connecticut Ultra Traverse \#CUT112	112 Miles	Southwick, MA	Jun 4, 2027	—	44.5 h
Connecticut Ultra Traverse #CUT112	50 Miles	Southwick, MA	Jun 4, 2027	—	21.5 h
Edge Hill Trail Race	50 KM	Ashfield, MA	Jun 12, 2027	4,000 ft	9 h
Notchview Ultra	100.7 mi	Adams, MA	Jul 9, 2027	—	60.5 h
TARC Summer Classic	50 KM	Medfield, MA	Aug 14, 2027	—	11 h
TARC Summer Classic	40 Miles	Medfield, MA	Aug 14, 2027	—	11 h
TARC Fall Classic 50 km	50 KM	Carlisle, MA	Sep 4, 2027	2,200 ft	12 h
TARC Fall Classic	50 Miles	Carlisle, MA	Sep 4, 2027	3,700 ft	13 h