Urban Crag is the first large cave on Lone Mountain look for the graffiti letters J M T. 14 routes exist ranging from 5.9-5.12a, sunny east facing with afternoon shade. The routes here are on mainly vertical to steep/slightly overhanging rock. Standout routes include Mud Tiger (5.11b), Dirt Lion (5.12a), Mega Poser (5.12a), Monster Truck Challenge (5.11d) and Twilight of a Poser (5.11a).
Getting There
From the city park on Jensen just North of the mtn. Follow the trail south of the park to a large cave (ignoring the first smaller alcove you come to).
The Classics
Mountain Project's determination of some of the classic, most popular, highest rated routes for Urban Crag:
It seems like additional routes have been added to the Urban and Suburban Crags since Islands in the Sky was written. Does anyone have any info on them? We climbed what felt like 5.6+ and 5.7 routes for which we have not been able to find any documentation. Both climbs were VERY fun, albeit quite runout in sections outside of each route's crux.