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100K races in Texas

The 28 100K ultramarathons in Texas, 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.

RaceDistanceWhereDateClimbCutoff
Paris Texas Marathon100 KMParis, TXSep 19, 2026—20 h
Conquer the Canyon Trail Race100 KMClaude, TXSep 26, 202611,000 ft18.5 h
Dana Peak Trail Run100 KMHarker Heights, TXOct 3, 20266,700 ft24 h
The Mammoth at High Hope Ranch100 KMGlen Rose, TXOct 10, 2026—26 h
Mujeres and Marigolds100 KMSmithville, TXOct 24, 20264,200 ft24 h
Big Texas Ultra100 KMGeorgetown, TXNov 7, 20264,600 ft20 h
El Taco Loco100 KMSan Antonio, TXNov 14, 2026—19.5 h
Dinosaur Valley Endurance Run100 KMGlen Rose, TXNov 21, 20265,700 ft33.5 h
Brazos Bend 100 - 100 km100 KMNeedville, TXDec 5, 202660 ft31.5 h
Naughty Hog100 KMValley View, TXDec 12, 20264,000 ft18 h
Texmas Trail Race104 KMSmithville, TXDec 12, 20264,000 ft20 h
Rudolph & Roses100 KMTyler, TXDec 19, 2026—20 h
Snowdrop Ultra100 KMMissouri City, TXDec 30, 2026——
IRON HORSE100 KMParis, TXJan 2, 20271,000 ft30 h
Bandera Endurance Run100 KMBandera, TXJan 9, 20276,240 ft25 h
Big Bend100 KMTerlingua, TXJan 17, 20274,500 ft20 h
Franklin Mountains Trail Runs100 KMEl Paso, TXJan 21, 202713,000 ft30 h
Cowboy Yeti100 KMBastrop, TXJan 23, 20274,000 ft20 h
Running the Rose108 KMTyler, TXJan 23, 20275,790 ft22 h
North Texas Ultra100 KMJacksboro, TXFeb 6, 2027—19 h
Rocky Raccoon100 KMHuntsville, TXFeb 6, 2027—31 h
Crazy Desert Trail Race Race100 KMSan Angelo, TXMar 6, 2027—24 h
Desert Wolf100 KMJohnson City, TXMay 1, 20275,600 ft21 h
Sasquatch Shuffle TX100 KMGrapeland, TXMay 1, 2027—20 h
Possum's Revenge69 MilesGraford, TXMay 15, 20271,460 ft23 h
High Hope Endurance Run100 KMGlen Rose, TXMay 30, 20272,148 ft37 h
Rise in the Pines100 KMSmithville, TXJul 17, 20276,500 ft33.5 h
Habanero Hundred100 KMCat Spring, TXAug 21, 20272,170 ft30 h