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Running trails in Union, NJ
Union has 2 trails in the directory. 1 of them posts opening hours, so you can check the gate before an early start. They're ranked here by rating weighted by review volume, across 13 Google reviews. Each listing shows what runners actually decide on — surface, loop distance, shade, lighting, restrooms and trailhead parking — instead of a made-up difficulty score.
Rahway River Parkway
4.1 ★★★★☆ 13 reviews
How to pick a trail in Union
- 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. 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. 1 of the 2 listing carries posted opening hours — worth a look before you set an alarm.
More on all of this in the trail-running guides.
Running trails near Union
Worth the short drive — the closest towns with trails in the directory.