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Grasslyn Nature Preserve

4.5 ★★★★★ 10 Google reviews · Running trail in Mequon, Wisconsin · Open 24 hours

Runner's snapshot

Surface
Not reported
Distance
Not reported
Shape
Not reported
Shade
Not reported
Access
Open 24 hours

Confirmed from Grasslyn Nature Preserve'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.

Grasslyn Nature Preserve — running trail in Mequon, WI, photo 1
Grasslyn Nature Preserve — running trail in Mequon, WI, photo 2
Grasslyn Nature Preserve — running trail in Mequon, WI, photo 3
Grasslyn Nature Preserve — running trail in Mequon, WI, photo 4
Grasslyn Nature Preserve — running trail in Mequon, WI, photo 5
Open 24h

What runners say about Grasslyn Nature Preserve

Pulled from public reviews of this trail (10 of them) — the things people bring up again and again, in their own words. Nothing here is written by us.

A fine little park with walking trails that are fun for humans and dogs alike. Trails can get quite wet. Mosquitos and hornets can be abundant during the warmer months.

★★★★★ — Sam , Apr 2019

Excerpts from public Google reviews. Read all 10 reviews →

Plan your run at Grasslyn Nature Preserve

The practical stuff

  • AccessOpen 24 hours — no gate to beat, so a 5am or a 10pm run both work
  • 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.
  • Websitecityofmequonwi.gov

Hours

Monday Open 24 hours
Tuesday Open 24 hours
Wednesday Open 24 hours
Thursday Open 24 hours
Friday Open 24 hours
Saturday Open 24 hours
Sunday Open 24 hours

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 Grasslyn Nature Preserve

9949 N Grasslyn Rd, Mequon, WI 53092

Get directions

Running trails near Mequon

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

Katherine Kearney Carpenter Park

4.6 ★★★★★ 175 reviews

Mequon, WI

Natural surfaceScenicDog-friendly

Park offering picnic tables and trails for humans and dogs, plus open areas.

under a mile away

Mequon dog park

4.5 ★★★★★ 86 reviews

Mequon, WI

Natural surfaceShadedDog-friendly

Park offering trails for dogs that are mostly off-leash, plus picnic tables.

under a mile away

River Barn Park

4.6 ★★★★★ 131 reviews

Mequon, WI

ScenicDog-friendly

Relaxed, clean park known for baseball fields (3 of them ) and softball tournaments.

1.6 miles away

Virmond County Park

4.7 ★★★★★ 591 reviews

Mequon, WI

PavedScenicDog-friendly

63-acre park with a lake overlook, picnic pavilion & playground, plus trails, benches & open fields.

1.7 miles away

River Forest Nature Preserve

3.7 ★★★★☆ 15 reviews

Mequon, WI

2.7 miles away

Brown Deer Park

4.6 ★★★★★ 501 reviews

Milwaukee, WI

LitScenicDog-friendly

Expansive green space features a golf course, boathouse, soccer & softball fields & a sledding hill.

2.9 miles away

All running trails in Mequon, WI →

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.