Colorado Mountain Schoo/Boulder Rock Club
Colorado Mountain School/Boulder Rock Club

Lumpy Ridge Classics

Batman and Robin

Batman and Robin summits the exposed Pinnacle, a mini-Petit Grepon. A great, fun climb but harder than the first two listed.

Area Information: Lumpy, Batman Pinnacle
Rating: 5.6 – 5.8
Pitches: 3

J-Crack

The most sought after climb at Lumpy Ridge, a must-do crack climb with a friction crux on the third pitch.

Area Information: Lumpy, the Book, J-Crack slab
Rating: 5.9 – 5.11
Pitches: 5-6

Kor’s Flake

A moderate classic on the largest cliff in the sub-alpine. Kor’s offers diverse climbing and frightening exposure. The fourth pitch is superb.

Area Information: Lumpy, Sundance Buttress
Rating: 5.9
Pitches: 5

Magical Chrome Plated

Truly odd name, truly great climb. One can walk off after the second pitch or summit the dome. Mostly moderate slab climbing with a few harder moves passing roofs.

Area Information: Lumpy, the Pear
Rating: 5.6
Pitches: 5

Mainliner

A fantastic route, its crux involves a wide stem off opposing corners. Another route featuring diverse climbing—from thin edges, to fingers, to hand and fist jams. Does not feel much harder than Kor’s Flake.

Area Information: Lumpy, Sundance Buttress
Rating: 5.9
Pitches: 5+

Osiris

Much harder and more strenuous than White Whale. The first pitch chimney (rated 5.6) makes you earn the wonderful crux—twin finger cracks through a bulge.

Area Information: Lumpy, The Book
Rating: 5.7
Pitches: 4

Pear Buttress

Every climb on this part of the Book is superb. Pear Buttress features a thin slab start, followed by laybacks and hand jams—great technique training.

Area Information: Lumpy, the Book, J-Crack slab
Rating: 5.8
Pitches: 5

White Whale

A superb climb on fantastic rock. Very aesthetic movement on finger cracks and slabs.

Area Information: Lumpy, Left Book
Rating: 5.7
Pitches: 3