Walker Ranch is a moderately difficult trail with a little of
everything. Steep rocky sections; rolling singletrack through grassy
fields; tight switchbacks; three foot drops. It's all there.
Take a Yukon or a Trance
Switzerland Trail is a long easy to moderate fireroad-style trail. An
old railroad bed, the trail never gets steeper than 4% grade. Rocky and
rough in places, with a spectacular view from the top.
Take a Flightline or a Trance
The Betasso Loop is a short (~4 miles) singletrack loop on Sugarloaf
Mountain. The trail is reasonably easy, but fun for all skill levels.
Ups, downs, jumps, and even a couple of small creek crossings. The
trail is closed to bikes on Wednesdays and Saturdays.
Revel or a Flightline.
Hall Ranch is an 8.1 mile loop: 1 mile on double track, the rest on
singletrack. It is a moderate trail, with a fair bit of climbing, though
none very steep. Parts of the trail are rocky, and there tends to be
some loose sand and gravel on the upper loop. Great views. A good trail
for advanced beginner through expert.This trail is popular with cyclists
and hikers, and you may also encounter equestrians..
Revel, Flightline, or Trance.
Hall Ranch is a 10 mile singletrack loop outside the town of Lyons, 12
miles north of Boulder. It's a great, moderately difficult trail with
lots of variety and terrific views of the valley and the mountains. The
second mile of the trail is a fairly steep, technical climb with
numerous rocky sections and switchbacks. Beyond there, you are rewarded
with easier going on smoother, fast, singletrack around the upper loop
through the trees, and return the way you came no the steep, rocky
section of trail.
Take a Flightline or Trance.