Ultra races in Texas, United States — 2026 running calendar

The Mammoth 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Fun Run

Glen Rose, Texas, United States

10 Oct, 2026 (Sat) – 11 Oct, 2026

Free - $155.00

Trail running, Running

Ultra 25K 10K 5K +3

Autumn Harvest Trail Weekend

Bastrop, Texas, United States

10 Oct, 2026 (Sat) – 11 Oct, 2026

$39.99 - $99.99

Running

Ultra Marathon Half-Marathon 10K +1

2026 HARRA Warm-Up Series Bundles

Houston, Texas, United States

11 Oct, 2026 (Sun)

$210.00 - $285.00

Running

Ultra 41K

Galveston Ultra Trail

Galveston, Texas, United States

17 Oct, 2026 (Sat)

Free - $105.00

Trail running, Running, Walking

Ultra Half-Marathon 10K 5K +4

Fields of Gold 50K • Marathon • Half Marathon • 12 Hour • 1 Hour • 10K • 5K

Marble Falls, Texas, United States

24 Oct, 2026 (Sat)

$49.99 - $119.99

Running

Ultra Marathon Half-Marathon 10K +1

SARR Rocky Horror Trail Run

San Antonio, Texas, United States

24 Oct, 2026 (Sat)

$40.00 - $100.00

Trail running, Running

Ultra 25K 10K 5K +4

2026 Xracers 10K Ride and Run Day Of The Dead

Baytown, Texas, United States

01 Nov, 2026 (Sun)

$25.00 - $45.00

Duathlon, Running, Cycling, Trail running

10K 5K Ultra +1

Salmagundi Trail Race

Dripping Springs, Texas, United States

07 Nov, 2026 (Sat)

$34.00 - $99.00

Trail running, Running

5K 10K Half-Marathon Marathon +3

2026 Sugar Rush Relay

Sugar Land, Texas, United States

13 Nov, 2026 (Fri) – 14 Nov, 2026

$40.00

Running

Ultra

Plano Turkey Trot 5K

Plano, Texas, United States

26 Nov, 2026 (Thu)

Free - $49.99

Running

5K Ultra +4

Colorado River Run 100 Mile • 50 Mile • 50K • Marathon • Half Marathon • 10K • 5K

Marble Falls, Texas, United States

27 Nov, 2026 (Fri) – 28 Nov, 2026

Free - $199.99

Trail running, Running

Ultra 49.9K Marathon Half-Marathon +4

Brazos Bend 100

Needville, Texas, United States

05 Dec, 2026 (Sat) – 06 Dec, 2026

Free - $250.00

Trail running, Running

Ultra Marathon Half-Marathon 1K +2