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Millstone River Park

4.2 ★★★★☆ 15 Google reviews · Running trail in Plainsboro Township, New Jersey · Posted hours

Runner's snapshot

Surface
Paved
Distance
Not reported
Shape
Not reported
Shade
Not reported
Access
Posted hours

Confirmed from Millstone River Park's own listing, the park or land manager's website, and runner reviews. Blank cells mean we could not verify that fact — we would rather say "not reported" than invent one. There is no Easy / Moderate / Hard rating on this page on purpose: a one-word difficulty score tells you nothing about whether a trail suits your run. Surface, distance, shade and hours do.

PavedRestroomsTrailhead parking

What runners say about Millstone River Park

Pulled from public reviews of this trail (15 of them) — the things people bring up again and again, in their own words. Nothing here is written by us.

I’m not rating the park itself, just the kayak launch. The last little piece of road to get here isn’t paved, just gravel. Follow it to the water and there are spots for a couple cars. There is not dock, but it’s an easy launching spot for your kayak/canoe onto Millstone River.

★★★★☆ — Sarah , Nov 2025

Relatively small park with a big parking lot, not a lot trail to walk, next to river, very few people there. There’s a kayak ramp on the side.

★★★★★ — Tiger , Jul 2021

interesting spot. nice 1k asphalt path if ur into that sorta thing. i think u can go down to the river with this weird path but idk it’s not that cool lol.

★★★★☆ — Evan , Jan 2019

Excerpts from public Google reviews. Read all 15 reviews →

Trail conditions & character

What this trail is actually like underfoot and overhead, taken from its own listing and from reviews. Each one links to every other trail with the same character. Busy or quiet is reported as a plain fact, not a plus or a minus — a runner heading out alone at dawn often wants company on the path, and someone running intervals wants an empty one.

🛣️ Paved surface 6 mentions

“The last little piece of road to get here isn’t paved, just gravel.”

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🅿️ Trailhead parking 4 mentions

“Relatively small park with a big parking lot, not a lot trail to walk, next to river, very few people there.”

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🚻 Restrooms

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Plan your run at Millstone River Park

The practical stuff

  • AccessPosted hours — posted hours below; park gates sometimes close earlier than the listing says
  • SurfacePaved — asphalt or concrete. Fast and predictable, runnable year-round, and fine with a stroller
  • DistanceNot reported. Trail systems often quote total path mileage rather than a single loop, so measure the route you actually want before you drive out.
  • ShadeNot reported. Assume some of it is exposed and carry water in summer.
  • At the trailheadparking, restrooms — reported by runners
  • Websiteplainsboronj.com
  • Phone(609) 799-0909

Hours

Monday 8 AM–9 PM
Tuesday 8 AM–9 PM
Wednesday 8 AM–9 PM
Thursday 8 AM–9 PM
Friday 8 AM–9 PM
Saturday 8 AM–9 PM
Sunday 8 AM–9 PM

Posted hours for the park or trailhead. Gates and parking lots often close earlier than the trail itself, and seasonal hours change — worth a check before a pre-dawn or after-dark run.

Where to find Millstone River Park

1 Plainsboro Rd, Plainsboro Township, NJ 08536

Get directions

Running trails near Plainsboro Township

Other trails within easy driving distance — useful when this one is flooded, gated, or just not the run you had in mind today.

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Mill Pond Park

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Quiet, scenic nature reserve featuring a lake, ponds and trails for hiking, biking and kayaking.

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Millstone River Preserve

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All running trails in Plainsboro Township, NJ →

Nearby towns

Listing verified July 2026 from public records, the trail's own website and runner reviews. Trail conditions change — paths flood, gates close at dusk, and shaded woods stay muddy for days after rain. Something out of date? Report a correction. Manage this trail? Send us the details — it is free.