| "Firehouse Twist" | | South Austin Trail Network | 1 | 1 miles | -37 ft |
| 1 Forth Notch (Deception) | | Brushy Creek | 19 | 3 miles | -349 ft |
| 1-B (Dog Leg) | | Big Bend Ranch | 3 | 3,994 ft | -77 ft |
| 1. The Beginning | | Jack Brooks Park | 1 | 1,933 ft | -63 ft |
| 10 Minutes of Hell | | Tom Mays Park | 1 | 1 miles | |
| 10. Hell 2 | | Jack Brooks Park | 0 | 4,839 ft | -11 ft |
| 100 Acre Wood Alt | | Cypress Creek | 0 | 772 ft | -13 ft |
| 100 Acre Wood North | | Cypress Creek | 1 | 3,852 ft | -33 ft |
| 100 Acre Wood South | | Cypress Creek | 0 | 1,747 ft | -15 ft |
| 11. Autobahn | | Jack Brooks Park | 0 | 2,226 ft | -4 ft |
| 12-Mile Loop | | Cedar Hill State Park | 4 | 10 miles | -1,192 ft |
| 12. Playground | | Jack Brooks Park | 0 | 1,203 ft | -2 ft |
| 13. By-Pass | | Jack Brooks Park | 0 | 1,221 ft | -4 ft |
| 14. Brickyard | | Jack Brooks Park | 0 | 1,312 ft | -2 ft |
| 15. The Never Ending Trail | | Jack Brooks Park | 0 | 1,955 ft | -1 ft |
| 16. Home Stretch | | Jack Brooks Park | 0 | 2,254 ft | -73 ft |
| 1886 | | Quanah Hill | 7 | 3 miles | -396 ft |
| 2. There's More | | Jack Brooks Park | 0 | 676 ft | -4 ft |
| 220 Spur Trail | | Double Lake Recreation Area | 0 | 787 ft | -19 ft |
| 2951 Connector | | Possum Kingdom Lake | 0 | 561 ft | -10 ft |
| 3 Acre Loop | | Monte Bella Bike Trails and Park | 0 | 4,696 ft | -9 ft |
| 3 mile Cutoff | | Cedar Hill State Park | 0 | 1,312 ft | -15 ft |
| 3. Hobo Camp Loop | | Jack Brooks Park | 0 | 2,208 ft | -12 ft |
| 30 Aker Woods | | Bluff Creek Ranch | 1 | 2,422 ft | -39 ft |
| 4. Joggernut | | Jack Brooks Park | 0 | 1,875 ft | -10 ft |
| 40 Acre Lake Trail | | Brazos Bend State Park | 0 | 1 miles | -42 ft |
| 45 Flow (down) | | South Austin Trail Network | 0 | 4,918 ft | -87 ft |
| 5. The Outback | | Jack Brooks Park | 0 | 1,244 ft | -27 ft |
| 6. Hell 1 | | Jack Brooks Park | 0 | 1,176 ft | -27 ft |
| 7. Cedar Bends | | Jack Brooks Park | 0 | 3,123 ft | -2 ft |
| 8 mile cutoff | | Cedar Hill State Park | 2 | 647 ft | -16 ft |
| 8. Dragon's Back | | Jack Brooks Park | 0 | 1,368 ft | -18 ft |
| 9. Hermit's Run | | Jack Brooks Park | 0 | 1,741 ft | -6 ft |
| A frame | | Dana Peak Park | 2 | 925 ft | -21 ft |
| A Loop | | Mobberly Trail | 0 | 4 miles | -577 ft |
| Above the rim | | Killeen | 0 | 1 miles | -122 ft |
| Access | | Hunter's Hill | 0 | 367 ft | -3 ft |
| Access | | Leon Creek Greenway | 0 | 292 ft | |
| Access 2 | | Hunter's Hill | 0 | 650 ft | |
| Access Spur | | Lake Sommerville State Park | 0 | 152 ft | -3 ft |
| Access To Activity Center | | Lake Livingston State Park | 0 | 669 ft | -3 ft |
| Access To Senic Loop And Nature Trail | | Fairfield Lake State Park | 0 | 1,220 ft | -28 ft |
| Access To The Dockery Trail | | Fairfield Lake State Park | 0 | 2,362 ft | -42 ft |
| Access Trail | | Big Bend Ranch | 1 | 4 miles | -219 ft |
| Access Trail to West Loop p | | Lake Bryan | 0 | 561 ft | -6 ft |
| Acequia (Mission San Juan) | | San Antonio River Walk Trails | 0 | 2 miles | -94 ft |
| Acequia (North) | | San Antonio River Walk Trails | 0 | 4,420 ft | -24 ft |
| Acequia (South) | | San Antonio River Walk Trails | 0 | 1 miles | -50 ft |
| Acme Loop | | South Lakes Park | 0 | 2,998 ft | -30 ft |
| Act of Faith | | Cameron Park | 2 | 1,821 ft | -106 ft |
| After Six Loop | | Walnut Creek | 4 | 5,085 ft | -75 ft |
| Agave Bypass | | North Franklin Mountain | 2 | 4,254 ft | -367 ft |
| Aggie Lookout | | Possum Kingdom Lake | 0 | 2,822 ft | -25 ft |
| Alamo Trail | | Windmill Hill Preserve | 0 | 856 ft | -17 ft |
| Alligator Loop | | Lake Sommerville State Park | 0 | 1 miles | -96 ft |
| Alligator Loop Access | | Lake Sommerville State Park | 0 | 2,204 ft | -37 ft |
| Alsatia Trail | | South Austin Trail Network | 0 | 1,099 ft | |
| Altar | | Tom Mays Park | 1 | 2,931 ft | -3 ft |
| Alternate | | Mobberly Trail | 0 | 322 ft | -3 ft |
| Alternate | | Odessa Mountain Bike Park | 1 | 411 ft | -22 ft |
| Alternate loop | | Odessa Mountain Bike Park | 0 | 1,455 ft | -27 ft |
| Alternate Loop 1 | | Odessa Mountain Bike Park | 1 | 3,005 ft | -55 ft |
| Alternate Loop 2 | | Odessa Mountain Bike Park | 0 | 3,319 ft | -65 ft |
| Alternate Trail | | Odessa Mountain Bike Park | 0 | 263 ft | -1 ft |
| Ameritrail | | Lake Houston Wilderness Park | 0 | 5 miles | -202 ft |
| Amphitheater Trail | | Inks Lake State Park | 0 | 586 ft | |
| Amphitheatre Trail | | Abilene State Park | 0 | 125 ft | |
| Angel of Goliad Hike and Bike Trail | | Goliad | 0 | 2 miles | -63 ft |
| Ann and Roy Butler Hike and Bike Trail | | Austin | 1 | 10 miles | -574 ft |
| Annas | | Arroyo Park & Nature Preserve | 2 | 1 miles | -37 ft |
| Ansley Loop | | Waterloo Lake Regional Park | 1 | 1 miles | -161 ft |
| Anthills | | Anthills MTB | 8 | 3 miles | -100 ft |
| Antidote | | Spider Mountain Bike Park | 3 | 1,610 ft | -93 ft |
| Antler Run | | North Franklin Mountain | 0 | 3 miles | -360 ft |
| Apache Creek | | San Antonio River Walk Trails | 0 | 2 miles | -83 ft |
| Apache Pass | | Pace Bend | 0 | 3,379 ft | -12 ft |
| Arbor Hills Off Road Bike Trail | | Arbor Hills Nature Preserve Off Road Bike Trail | 3 | 2 miles | -242 ft |
| Archer's Trail | | The Woodlands | 0 | 242 ft | -12 ft |
| Arizona | | Cameron Park | 1 | 1,464 ft | -49 ft |
| Armadillo | | Southwest Williamson County Regional Park | 2 | 1 miles | -106 ft |
| Armadillo Dash | | Cypress Creek | 0 | 455 ft | -4 ft |
| Armadillo Hill | | Eisenhower State Park | 1 | 3,233 ft | -183 ft |
| Armadillo Lookout Trail | | Kickapoo Cavern State Park | 0 | 1,706 ft | |
| Armadillo Ridge Trail | | San Angelo State Park | 0 | 3,673 ft | -54 ft |
| Armadillo Ridge Trail - Part 2 | | San Angelo State Park | 0 | 4,042 ft | -66 ft |
| Armadillo Trail | | Camp Eagle | 1 | 2 miles | -316 ft |
| Armand Bayou East | | Pasadena | 2 | 2 miles | -118 ft |
| Armand Bayou East/West Connector | | Pasadena | 0 | 412 ft | -4 ft |
| Armand Bayou West | | Pasadena | 1 | 2 miles | -77 ft |
| Around the Hump | | Dana Peak Park | 1 | 1,075 ft | -17 ft |
| Arrowhead Trail | | Atlanta State Park | 0 | 512 ft | -55 ft |
| Arrowhead Trail Loop | | Atlanta State Park | 0 | 3,173 ft | -94 ft |
| Arrowhead Trail View | | Atlanta State Park | 0 | 387 ft | |
| Arrowhead Trail View Loop | | Atlanta State Park | 0 | 243 ft | |
| Arroyo | | Cameron Park | 1 | 572 ft | -103 ft |
| Arroyo Park Loop | | Arroyo Park & Nature Preserve | 3 | 2 miles | -152 ft |
| Arroyo Primero | | Big Bend Ranch | 1 | 4 miles | -877 ft |
| Ashe Juniper Pond Loop | | Garner State Park | 0 | 1 miles | -200 ft |
| Ashe Juniper Trail | | Garner State Park | 1 | 2 miles | -248 ft |
| Ashe Juniper Trail Alternate | | Garner State Park | 0 | 1,119 ft | -20 ft |
