Not sure what your schedule looks like this spring, but if you want to visit some of the trails up north, the "NoCo Spring Vertical Series" is coming up. Dates/info here https://www.facebook.com/gnarrunners/posts/1011131...
and on the Gnar Runners site.
those look rad! I may try to get up there for the 4/2 event. Are they just fatasses. I didn't see any start times or anything on the site.
Sweet! I have never thought of them as fatasses - just group runs, as not everyone ends up doing the prescribed run. For example, on Round up, some might just do a summit or two while others might do 3 out of the 5 climbs. For crosier, some will only do one summit and for the QR preview I would say half make up their own run for the day but hang out and socialize at the BBQ. We're pretty laid back up here :)
Crosier typically starts at 6 or 7 am. Follow the Gnar Runners facebook page for updates and I can keep you posted when the details come out as well.