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Round Mountain Loop

 7 votes


10.8 Miles 17.4 Kilometers




2,088' 636 m


-2,090' -637 m



Avg Grade (4°)


Max Grade (18°)

3,230' 985 m


1,693' 516 m



Minor Issues 8 days ago
Some Mud, Fallen Trees: A little muddy in some spots with one section that has a few down trees, but still a great ride. History

Getting forecast...

A local favorite, this ride has sweet, tight trail with an easy dirt road up from Purdon Crossing.

Paul Rogers


There can, on a rare occasion, be snow. Or too much rainfall. Allow 48 hours after rains as this is the red clay dirt that gets easily scarred by knobby tires.
I call this "Big Little Loop". It is only 10 miles, but packs in some elevation and feels bigger. The singletrack makes it so worth it! The climb out is at the end, but it's easy and 1/3 concrete.
This is one of the more remote trails in the area, and it's worth the small drive outside of town.

There is a Lookout on Round Mountain that is quite spectacular on clear days. It's just a hop and skip to it from the loop. At about mile 2.4 there is a turnout with a trailhead sign, detour from here to the lookout and then cut back to the trail.

Yuba River offers several swimming holes and mellow vibes at and before Purdon Crossing. look for offshoot trails along South Yuba Trail: Edwards Crossing to Purdon Crossing. Which also gives you the option of going up and back for more trail time.
Dogs: Off-leash

Need to Know

Parking; At Purdon Rd and Rector, take the dirt road up maybe 100ft. there is parking turnouts. Ticks, Mosquitos and poison oak, not necessarily in that order...


Start your ride with a mellow climb on a nice narrow, hard-packed trail. You'll experience a few ups and downs as the trail meanders up Round Mt. Slowly, the trail becomes a little tighter, a little steeper, a little bit more technical, and super fun.

From the top of Round Mountain Trail, you'll descend to the river. This section of trail has steep drop-offs and plenty of speed, so keep it tight. The margin for error is quite small here!

Once down to the South Yuba Trail: Edwards Crossing to Purdon Crossing, take a left. The trail now meanders up and down, in and out on sweet singletrack. Eventually, you'll pop out at Purdons crossing and start the dirt ride up.

An alternative option is to park at Purdon and do the climb first.

History & Background

BONC built, Rider approved...


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Jan 2, 2018
Jeff Angermann 1
11mi — 1h 10m
Aug 30, 2017
Charnley Slack
There is unavoidable poison oak so if you're allergic keep that in mind. The trail was a little hard to spot from the start so I went up a little d... 13.3mi
Jun 17, 2017
Larry Russell
May 28, 2017
Larry Russell
4th ride of the year. 10.9mi
May 28, 2017
Kurt Rosenbauer
Jun 9, 2016
Larry Russell
For off trail and had a hike a bike from hell. — 1h 30m
Apr 30, 2016
Larry Russell
Apr 13, 2016
kari logwood

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Trail Ratings

  4.4 from 7 votes


  4.4 from 7 votes
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in California


139 Views Last Month
3,638 Since Mar 6, 2015
Intermediate/Difficult Intermediate/Difficult


Great ride. Given it starts about 100 yards from my house I get to ride it almost weekly. May 29, 2015

I need a better description of where the trail actually starts. I parked in one of the dirt turnouts on Rector Rd, but I wasn't sure of where the trail actually was. Ended up going down Rector Rd. Where does the trail start in relation to Purdon Rd and Rector Rd. Thanks. Jun 14, 2015

This was my first ride since recently moving to California and it was a good deal of fun (I most recently lived in Oklahoma, which for mountain biking, is no fun). However, having lived in Las Vegas, NV and ridden Bootleg Canyon regularly, I can't honestly give this a Blue Diamond rating as the trails were relatively smooth, albeit fast. You do need to watch your speed if your downhill bike handling skills are not up to snuff. Heading down to the river, there are lots of sections with high exposure that could lead to a long fall if you shoot off the trail. So glad to live somewhere with mountains again! Jun 25, 2015

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