Wisconsin trails · Rock Lake Bike
A 12.3-mile loop in Wisconsin, with 162 ft of climbing. Reaches Hildebrand Lake and other lake destinations. Managed by the U.S. Forest Service.
The climbing leans toward the middle third: 44% of the ascent falls between mile 4.1 and mile 8.2. It gives back about 537 ft along the way, so it rolls rather than climbing steadily.

USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
ROCK LAKE NRT TH — parking nearby, restroom. 46.19764, -91.13540 · directions
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 5:52 a.m., the sun rises at 6:23 a.m. and sets at 7:45 p.m., and the last usable light fades about 8:16 p.m. (CDT) — 13 h 22 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 12.3-mile route takes roughly 4 h 39 min, so leaving the trailhead at sunrise puts you back around 11:02 a.m. — 8 h 43 min before sunset.