Texas trails · 12-mile Loop
12-mile Loop
A 12.4-mile loop in Texas, with 528 ft of climbing. Managed by the state.
Elevation profile
Most of the climbing sits in the middle third — 55% of the ascent, between mile 4.1 and mile 8.3. It gives back about 677 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Heads up
Getting there
12-mile Loop access. 29.92958, -100.93796 · directions
Daylight at the trailhead
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:55 a.m., the sun rises at 7:20 a.m. and sets at 8:07 p.m., and the last usable light fades about 8:31 p.m. (CDT) — 12 h 47 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 12.4-mile route takes roughly 4 h 51 min, so leaving the trailhead at sunrise puts you back around 12:11 p.m. — 7 h 56 min before sunset.
Loop options
- 12-mile Loop — 12.4 mi loop, 1,001 ft gain