This is a set of 3 canyons that are the drainages of the South, Middle, and North forks of the St. Vrain River. The greatest bulk of the climbing to date is in the South Fork. The rock is granitic and at times on the coarser side. There are a variety of routes here, some traditional, some sport, even some ice/mixed
. Most of the routes are shorter here, maybe up to 5 pitches in length. There is still a decent amount of rock to explore here. While there is some friable rock in places, the bulk is good quality. Poison ivy does tend to flourish in spots here, so the sensitive should be aware.
Most will drive up US 36 or CO 66 west to Lyons. From there, the forks diverge. The South and Middle Forks are accessed off of CO 7. The North Fork is accessed off of US 36.
Weather station 10.6 miles from here
404 Total Routes
['4 Stars',17],['3 Stars',92],['2 Stars',183],['1 Star',105],['Bomb',5]
Browse More Classics in St. Vrain Canyons
Mountain Project's determination of some of the classic, most popular, highest rated routes for St. Vrain Canyons:
Featured Route For St. Vrain Canyons
Upside The Cranium 5.10c 6b 20 VII 20 E2 5b CO
: ... : The Monkey Skull
Upside The Cranium is the best of the lines on the Monkey Skull. It begins just right of the main trad dihedral on greyish, sub-vertical rock. The route begins to steepen as you approach bolt 4 and finishes up just about vertical. No one move is all that difficult, and most moves are 5.10- until near the last bolt where a long reach on thin but good edges delivers the crux (5.10c). Worth a pair of stars for the good rock, the continuity, and the fun climbing moves on well bolted stone....[more] Browse More Classics in CO
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