HomeWashingtonMercer Island › N. Mercerdale Hillside Open Space

N. Mercerdale Hillside Open Space

4.6 ★★★★★ 5 Google reviews · Running trail in Mercer Island, Washington · Posted hours

Runner's snapshot

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

Confirmed from N. Mercerdale Hillside Open Space'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.

Stroller / ADATrailhead parking

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.

🅿️ Trailhead parking

More trails like this →

Stroller / ADA accessible

More trails like this →

Plan your run at N. Mercerdale Hillside Open Space

The practical stuff

  • AccessPosted hours — posted hours below; park gates sometimes close earlier than the listing says
  • 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 — reported by runners
  • Stroller / wheelchairReported as smooth and step-free enough for a running stroller or a chair.
  • Websitemercergov.org
  • Phone(206) 275-7600
  • Social Facebook

Hours

Monday 6 AM–10 PM
Tuesday 6 AM–10 PM
Wednesday 6 AM–10 PM
Thursday 6 AM–10 PM
Friday 6 AM–10 PM
Saturday 6 AM–10 PM
Sunday 6 AM–10 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 N. Mercerdale Hillside Open Space

7415 SE 27th St, Mercer Island, WA 98040

Get directions

Running trails near Mercer Island

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

Mercerdale Park

4.6 ★★★★★ 427 reviews

Mercer Island, WA

LoopPavedDog-friendly

Chill, tree-covered trails with open space, picnic & play areas, plus summer & music festivals.

under a mile away

Aubrey Davis Park

4.6 ★★★★★ 518 reviews

Mercer Island, WA

ScenicDog-friendly

Park offering sports facilities, a playground & a large open field with views of downtown Seattle.

under a mile away

Luther Burbank Park

4.7 ★★★★★ 2,398 reviews

Mercer Island, WA

LoopMixedLitScenic

Visitors swim, boat & fish at this 7-acre lakefront park with a playground, dog run & wetlands area.

under a mile away

Roanoke Landing

4.3 ★★★★☆ 20 reviews

Mercer Island, WA

Scenic

under a mile away

Calkins Point Boardwalk Trail

5 ★★★★★ 5 reviews

Mercer Island, WA

Boardwalk

under a mile away

Deane's Children's Park

4.8 ★★★★★ 176 reviews

Mercer Island, WA

ShadedDog-friendly

Recreation area with a playground featuring a dragon structure, picnic areas, and a bike skills facility.

2.5 miles away

All running trails in Mercer Island, WA →

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.