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Running trails in San Marino, CA
San Marino has 1 trail in the directory — 1 paved and 1 loop that returns to the trailhead. They're ranked here by rating weighted by review volume, across 2,116 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.
Lacy Park
4.7 ★★★★★ 2,116 reviews
LoopPavedScenicDog-friendly
Dog-friendly public expanse featuring 2 walking loops, 6 tennis courts & a decades-old rose arbor.
No trails match those filters.
How to pick a trail in San Marino
- Match the surface to your legs. Most of what's here is paved (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 paved trails →
- Loop or out-and-back? 1 trail here is a loop, so you finish back at the car with no backtracking — the easiest way to run a set distance without thinking about it. On an out-and-back you turn round at half your target distance, which makes any trail fit any run.
- Check the hours before a 6am run. Plenty of trails sit inside parks that gate at dusk and don't unlock until well after sunrise, so a trail that's perfect at lunchtime can be locked at 6am.
- Long run? Check water and restrooms first. 1 has trailhead parking and 1 has restrooms in San Marino. Anything over an hour and those stop being nice-to-haves — and in summer, shade counts double.
- The small things that decide it. 1 that runners describe as quiet 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.
Browse San Marino trails by type
Running trails near San Marino
Worth the short drive — the closest towns with trails in the directory.