| Code |
Race Name |
| AU |
Aurora |
| BAN |
Bandera |
| BBU |
Big Bend Ultra |
| B2B |
Border to Badlands |
| BC |
Big Cedar |
| BI |
Barrier Island Ultra |
| CDR |
Cedar Ridge |
| CF |
Cypress Fest |
| CIR |
The Circus |
| CKC |
Capt’n Karl’s Colorado Bend |
| CKM |
Capt’n Karl’s Muleshoe |
| CKP |
Capt’n Karl’s Pedernales Falls |
| CKR |
Capt’n Karl’s Reveille Ranch |
| CR |
Cactus Rose |
| DV |
Dinosaur Valley |
| ES |
Escarpment |
| FV |
Fossil Valley |
| FES |
The Festival |
| GAM |
The Game |
| GG |
Gassy Goat |
| GL |
Grasslands |
| GT |
Guadalupe Trail Fest |
| GW |
Goodwater |
| HH |
Hells Hills |
| HHU |
Hidden Hills Ultra |
| HOG |
Hog’s Hunt |
| IDB |
Isle du Bois |
| JJ |
J&J |
| KC |
Kickapoo Cavern |
| KH |
Knob Hill |
| LH |
Light House |
| LP |
Lost Pines |
| MA |
The Maze |
| MEL |
Mellow |
| MF |
Mesquite Fire |
| MLP |
Marfa La Pradera |
| MO |
Mosaic |
| NU |
Nueces |
| OF |
Oktoberfest |
| OOR |
Old Ore Rd |
| PBR |
Pandora’s Box of Rox |
| PD |
Palo Duro |
| PF |
Paleface |
| PK |
Possum Kingdom |
| PWH |
Piney Woods (Houston) |
| PWT |
Piney Woods (Tyler) |
| RC |
Rough Creek |
| RLR |
Rockledge Rumble |
| RR |
Rocky Raccoon |
| RRT |
Red River Trail Run |
| SAL |
Salmagundi |
| SB |
Saddle Blazer |
| SKY |
Sky Island |
| SM |
Spider Mountain |
| SO |
Six-O Trail Run |
| ST |
The Stampede |
| SW |
Southwest |
| T2W |
Texas 2Way Torture Test |
| TA |
The Tangle |
| TG |
The Game |
| TJ |
Tinajas |
| TNT |
Toughest N’Texas |
| TXS |
TX Switchback |
| WC |
Wild Canyon |
| WCT |
Wildcatter |
| WH |
Wild Hare |
| WL |
Wonderland |
| WP |
Whispering Pines |
| XT |
Cross Timbers |
