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Alan Thiesen Trailhead

4.5 ★★★★★ 52 Google reviews · Running trail in Grass Valley, California · Posted hours

Runner's snapshot

Surface
Natural surface
Loop distance
2 mi
Shape
Loop
Shade
Tree cover
Access
Posted hours

Confirmed from Alan Thiesen Trailhead'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.

Natural surface2 miLoopShadedStroller / ADAFlat & fastHilly

Forest hiking area offering trails with shade trees, some leading down to a creek.

What runners say about Alan Thiesen Trailhead

Pulled from public reviews of this trail (52 of them) — the things people bring up again and again, in their own words. Nothing here is written by us.

well-maintained 3 mentions

“Love the friendly people and clean environment.”

🌳 shaded & cool 3 mentions

Well it was a nice walk in the summertime it is dry. We went to the summer and it looked like it would be a very pretty place in the spring or winter. It is definitely not flat the trail is steep in places. At least one review shows a creek that is not actually on this trail anywhere.

★★★★☆ — Russell , Aug 2023

First hike of my #52weekchallenge. Its was nice to have curves and turns and hills and dips. Being that the loop is only a mile, we walked in one direction, then unwound in the opposite direction making in a 2 mile journey! Give it a try. Wear yucky shoes if its wet out, they'll get muddy.

★★★★★ — Connie , Jan 2020

The parking lot was upgraded from a dirt lot to a nicely paved lot with room for about 15-20 vehicles.

★★★★★ — Dutch , Feb 2024

Short and sweet trail with a lovely tree and swing at the top. Great place to hike with kids.

★★★★★ — Alexandrea , Dec 2025

Excerpts from public Google reviews. Read all 52 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.

⛰️ Hills / elevation 4 mentions

“Its was nice to have curves and turns and hills and dips.”

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🔁 Loop trail 3 mentions

“Being that the loop is only a mile, we walked in one direction, then unwound in the opposite direction making in a 2 mile journey!”

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Stroller / ADA accessible 3 mentions

“Nice, flat parking lot, and the trails are easily accessible.”

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🌲 Natural surface / singletrack 2 mentions

“Not difficult terrain and the ground wicks away the rainfall nicely so the trails are not too muddy.”

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Flat & fast 2 mentions

“Nice, flat parking lot, and the trails are easily accessible.”

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🌳 Shaded / tree cover 3 mentions

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Plan your run at Alan Thiesen Trailhead

The practical stuff

  • AccessPosted hours — posted hours below; park gates sometimes close earlier than the listing says
  • SurfaceNatural surface — easiest on the joints and the most fun, but expect roots, rocks and mud after rain
  • Loop distance2 mi back to where you parked
  • ShadeRunners describe real tree cover here — it makes a summer afternoon workable
  • Stroller / wheelchairReported as smooth and step-free enough for a running stroller or a chair.

Hours

Monday 7 AM–6 PM
Tuesday 7 AM–6 PM
Wednesday 7 AM–6 PM
Thursday 7 AM–6 PM
Friday 7 AM–6 PM
Saturday 7 AM–6 PM
Sunday 7 AM–6 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 Alan Thiesen Trailhead

Grass Valley, California

Get directions

Running trails near Grass Valley

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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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.