Running trails in Boulder, UT
Boulder has 1 trail in the directory — 1 with a stated distance, 1 shaded, and 1 open 24 hours. Every one posts opening hours, so you can check the gate before an early start. They're ranked here by rating weighted by review volume, across 1,059 Google reviews. Filter by surface, loop, distance, shade or lighting to get to the run you're actually planning — no made-up difficulty score, just the facts you'd check before driving out.
Lower Calf Creek Falls
4.9 ★★★★★ 1,059 reviews
6 miMixedShadedScenic
Misting 126-ft. waterfall featuring a natural pool at its base, reachable by a scenic hike.
No trails match those filters.
How to pick a trail in Boulder
- Match the surface to your legs. Most of what's here is mixed (1 of 1). Asphalt and concrete are fast, predictable and runnable year-round but the least forgiving; crushed limestone and dirt take the sting out of high mileage; boardwalk is flat and scenic but slick in the wet. If your shins or knees are complaining, the fix that actually works is varying the surface you run on rather than chasing one "best" one. More mixed trails →
- Loop or out-and-back? A loop finishes back at the car with no backtracking; on an out-and-back you simply turn round at half your distance. The longest stated distance in Boulder is Lower Calf Creek Falls at 6 mi. 1 trail is long enough for a 5-mile-plus run without repeating yourself.
- Check the hours before a 6am run. Every trail in Boulder is listed as open 24 hours, so an early start is never the problem. 1 of the 1 listing carries posted opening hours — worth a look before you set an alarm.
- Long run? Check water and restrooms first. 1 has trailhead parking and 1 has restrooms in Boulder. Anything over an hour and those stop being nice-to-haves — and in summer, shade counts double.
- The small things that decide it. 1 shaded, 1 with mile markers, and 1 dog-friendly. Busy or quiet isn't a good-or-bad thing here: a busy path is the safer choice for a solo run at dawn, a quiet one is better for intervals.
More on all of this in the trail-running guides.