Arizona trails · Agua Caliente
A 6.4-mile out-and-back in Arizona, with 3,362 ft of climbing. Reaches Walnut Spring and other pass/spring/summit destinations. Managed by U.S. Forest Service.
Most of the climbing sits in the middle third — 61% of the ascent, between mile 2.1 and mile 4.3.

USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Agua Caliente access. About 1 h 14 min drive (41 mi, 5 of them unpaved) from Nogales. 31.70723, -110.94029 · directions
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 6:01 a.m., the sun rises at 6:26 a.m. and sets at 5:52 p.m., and the last usable light fades about 6:17 p.m. (MST) — 11 h 27 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 12.9-mile round trip takes roughly 8 h 08 min, so leaving the trailhead at sunrise puts you back around 2:34 p.m. — 3 h 19 min before sunset.