Home › California › Glendora
Running trails in Glendora, CA
Glendora has 17 trails in the directory — 2 paved and 1 on crushed gravel or dirt, 2 with a stated distance, 6 shaded, and 4 open 24 hours. 9 of them post opening hours, so you can check the gate before an early start. They're ranked here by rating weighted by review volume, across 1,309 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.
Colby Trail, Glendora, CA
4.6 ★★★★★ 299 reviews
Picturesque area offering a short hiking/jogging path to a hilltop for expansive views.
Louie Pompei Memorial Sports Park (by Reservation Only)
4.4 ★★★★☆ 280 reviews
A regulation baseball diamond & a softball field are the focus of this city park with picnic areas.
Lower Monroe Truck Trail
4.8 ★★★★★ 130 reviews
Outdoor recreation area with hiking trails, mountain biking, and plenty of water.
George Manooshian Park
4.5 ★★★★★ 116 reviews
Park with hiking trails, along with tennis and baseball fields, plus a clean track.
Big Dalton Wilderness Area
4.7 ★★★★★ 110 reviews
Park, campground and hiking area offering views of the valley, plus picnic facilities.
Big Dalton Canyon Trail
4.8 ★★★★★ 98 reviews
Shaded, family-friendly hiking area along a creek in the San Gabriel Mountains.
Upper Colby
4.8 ★★★★★ 71 reviews
Hiking and biking area featuring sunflowers and other plants, plus a riverside.
Top of Punk Out Trail
4.8 ★★★★★ 59 reviews
Hiking area with a trail leading to a hilltop viewpoint.
Summit of Colby Trail
5 ★★★★★ 16 reviews
Start of Punk Out Trail
4.8 ★★★★★ 13 reviews
Mystic Canyon Trail
4.8 ★★★★★ 6 reviews
Big Dalton Wilderness Park
4.6 ★★★★★ 5 reviews
No trails match those filters.
How to pick a trail in Glendora
- Match the surface to your legs. Glendora gives you a choice: 2 paved and 1 natural surface. 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 paved 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 Glendora is Lower Monroe Truck Trail at 4 mi.
- Check the hours before a 6am run. 4 trails in Glendora are open 24 hours — the rest can sit inside a park that gates at dusk and doesn't unlock until well after sunrise. 9 of the 17 listings carry posted opening hours — worth a look before you set an alarm.
- Long run? Check water and restrooms first. 6 have trailhead parking, 4 have restrooms, and 1 has a water fountain in Glendora. Anything over an hour and those stop being nice-to-haves — and in summer, shade counts double.
- The small things that decide it. 6 shaded, 3 that runners describe as quiet, and 7 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.
Browse Glendora trails by type
Running trails near Glendora
Worth the short drive — the closest towns with trails in the directory.