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Running trails in Ontario, CA
Ontario has 4 trails in the directory — 1 shaded and 2 open 24 hours. Every one post opening hours, so you can check the gate before an early start. They're ranked here by rating weighted by review volume, across 1,003 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.
Veterans Memorial Park
4.5 ★★★★★ 402 reviews
City park with a playground, walking trails, a fitness center, and facilities for basketball and baseball.
Homer F. Briggs Park
4.4 ★★★★☆ 394 reviews
Park with baseball fields, playground and a horse track.
Celebration Park South
4.7 ★★★★★ 158 reviews
Relaxed, family-friendly park featuring a playground area plus a maze, barbecue grills and gazebos.
James Galanis Park
4.2 ★★★★☆ 49 reviews
Charming local park providing grassy expanses for recreation, including a soccer field & playground.
No trails match those filters.
How to pick a trail in Ontario
- Match the surface to your legs. 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.
- 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.
- Check the hours before a 6am run. 2 trails in Ontario are open 24 hours — the rest can sit inside a park that gates at dusk and doesn't unlock until well after sunrise. 4 of the 4 listings carry posted opening hours — worth a look before you set an alarm.
- Long run? Check water and restrooms first. 2 have trailhead parking, 3 have restrooms, and 1 has a water fountain in Ontario. 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, 2 that runners describe as quiet, and 1 smooth and wide enough for a stroller or a wheelchair. 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 Ontario trails by type
Running trails near Ontario
Worth the short drive — the closest towns with trails in the directory.