The Short Answer
On the Endurance Grid calendar, trail races run all year, and fall is the busiest stretch. October 2026 held 153 trail races in 42 states, the most of any month since May 16, 2026. Winter stays busy too: 143 are listed for December 2026 through February 2027, led by Texas.
Based on 484 trail races held on the Endurance Grid calendar since May 16, 2026, when our race history begins, and 456 listed ahead, as of November 8, 2026. We don't list every trail race in the US.
Races by Month
Our race history begins on May 16, 2026, so the first column covers the months since then. The second column is what race directors have listed with us so far. Listings fill in as races get closer, so the later months will keep rising.
Month | Held in 2026 | Listed so far, Nov 2026 to Oct 2027 |
|---|---|---|
January | — | 51 in 21 states |
February | — | 48 in 21 states |
March | — | 41 in 22 states |
April | — | 43 in 16 states |
May | 16 in 13 states (from May 16) | 42 in 17 states |
June | 35 in 20 states | 37 in 24 states |
July | 64 in 31 states | 17 in 15 states |
August | 91 in 34 states | 20 in 16 states |
September | 91 in 35 states | 22 in 12 states |
October | 153 in 42 states | 16 in 11 states |
November | 34 in 23 states (through Nov 7) | 68 in 29 states (Nov 8 on) |
December | — | 44 in 22 states |
See every upcoming trail race.
Fall: The Busiest Stretch
Since our history began, trail races on our calendar rose from 35 in June to 91 in both August and September, then 153 in October. October held more than four times June's count and had trail races in 42 states, the widest spread of any month.
Summer
In 2026, our calendar held 64 trail races in July and 91 in August, more than in June but well short of October's 153. See June trail races.
Winter Trail Races
Trail races keep going through the winter. For December 2026 through February 2027, our calendar lists 143 so far in 34 states, led by Texas (25), Virginia (13), Florida (11), and Georgia (10). January 2027 has the most trail races listed so far of any month in 2027, with 51.
Distances
Trail races come in many distances, often several at the same event. Of the 940 trail races on our calendar since May 16, 2026, 367 offer a 5K, 262 a 10K, 165 a half marathon, and 132 a 50K.
Upcoming Trail Races
The Next Trail Races on Our Calendar
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