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blueBlack Trimble Mountain Trail

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3.8 mile 6.1 kilometer point to point


Ascent: 1,019' 311 m
Descent: -1,000' -305 m
High: 2,740' 835 m
Low: 1,873' 571 m


Avg Grade: 10% (6°)
Max Grade: 26% (15°)


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Trail shared by Shenandoah Bicycle

A great, off-camber all singletrack loop across the road from Todd Lake.

Shenandoah Bicycle

E-Bikes Unknown

Features -none-

Open All Year


This trail is also known as "Boy Scout."

There are a variety of parking places to access this trail. It's plenty of awesome trail for a short ride hot lap, or a introduction to some of the more challenging GWNF riding. If you are looking for a logical step up from Tillman West and Narrowback Mountain Loop, this one is worth a try.

Conveniently located amongst several great trails to connect with, you can break up the road riding on the Lookout Mountain Loop. Trimble can be ridden both ways, but we recommend you ride it clockwise. Pedal to the waste dump site at the foot of Todd Lake dam where there's a bridge and trail marker sign visible from FR 95.

The trail is off-camber and skinny enough to keep you honest with your steering game & speed management. The climb is entirely rideable if you have adequate fitness. Since Trimble is off-camber, the downhill side is a constant hazard to be aware of. Luckily, the downhill side of the trail is not too exposed for the majority of the climb. There's a false summit, with a short descent, before the final climbing section to the true beginning of the downhill.

Hold on for some fast, off-camber descending and a couple of exposed spots up high. There are plenty of terrain features, drops, roots, turns and FAST sections. This is a super fun and beautiful section of trail.


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Apr 15, 2018
Steven Adair
The description labels this trail as off camber. I would call it bench cut with off camber being the exception rather than the norm.
Feb 3, 2018
Ilsa Cooke
hard uphill but amazing downhill
Jan 27, 2018
Garrett Tanner
There are a couple of fallen trees on the down hill section when going clockwise 3.8mi
Oct 28, 2017
Jeremy G-M
Oct 10, 2017
Glen Thomas
Apr 18, 2017
Ian Bonesteel
Apr 9, 2017
Eric F.
From parking lot round trip. 4.6mi — 1h 01m
Dec 25, 2016
James Murray

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Trail Ratings

  4.3 from 15 votes


  4.3 from 15 votes
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in Virginia


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1,982 Since Dec 14, 2014
Intermediate/Difficult Intermediate/Difficult

Nice little loop with a pretty stout climb, then a fast, fun, off camber downhill. Worth doing if you have some energy after finishing Lookout Mountain trail. Mar 21, 2018

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