5 Star Route

We love a good story. Originally, there were two mountains in the region with cowhorn spires on the top:  Big Cowhorn Mountain and Little Cowhorn Mountain. But in 1911, lightning knocked the spire right off Little Cowhorn Mountain. The two mountains were renamed. Oddly, the spireless, smaller mountain was renamed Cowhorn Mountain.  And the bigger mountain is now the iconic Mt Thielsen. 

Besides Thielsen and Cowhorn, this route includes great views of Diamond Peak. It also has some pitchy climbs, “old school” single track deep in the forest, and a skinny YEHAWW paved downhill that will have you laughing like a schoolgirl playing hopscotch. We’ve also tossed in a little H2O, riding along canals and Lake Lemolo.  

It’s an advanced route with an option to make it easier, but where’s the fun in that? If you want the fun downhill to seem like even more of a reward, to really make you giggle, you will need to feel the pain of the start.

Adventure / Gravel Route

Loop: 38 miles / 3700 ft gain
– Surface: ~ 60% gravel, 10% single track, 30% paved
eBike Friendly: No
– Location: ~ 1 hour, 45 min north of Klamath Falls, Oregon
– Published: August 2020

Technical Difficulty & Risk[what this means]

Advanced. Due to: (a) the 3 miles of single track rated rated mountain bike intermediate and (b) the demanding 1 mile climb at a continuous 10 to 15% grade.

When we like to ride this …

Spring through fall on a sunny day, when the views will be big!

The Start

A dirt pull out alongside the paved road [NF 2614] just before crossing the bridge over the Umpqua River leading to Inlet campground.
Lat / Long: 43.310265, -122.155137

Food / Water


Go Local

At the end of the day, if you’re looking for some quick eats and drinks, stop by the Lemolo Lake Resort general store on the northwest end of the lake. They also have full RV hook ups.
Lat / Long: 43.318228, -122.194348

For dry camping check out the following National Forest campgrounds along the lake: Poole Creek, East Lemolo, Inlet, and Bunker Hill.

Ride Details

**Click to Read More


Wahoo / Garmin Direct Download
Cue Sheet / GPX file / TCX file


Red = paved road
Brown = gravel / dirt road
Blue = single track

For help with GPS files, the RideWithGPs mapping app and to learn how to download our routes for free, see the “Using Our Rides” page.

Ridden and Reviewed by …

Gravel Girl / Team Dirty Freehub

She loves a good day of gravel like most people like a good book. She’s always amused by the outdoors and the wild adventures. Gravel Girl is a Co-Founder of Dirty Freehub.

Captain O / Team Dirty Freehub

He should have “Never Stop Exploring” tattooed on his chest! He loves adventures on bikes and is a Co-Founder of Dirty Freehub.

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