For anyone looking to add some mountain biking, here's a little rundown of the options. Note that you can ride on good trails from the same parking lot as the orienteering events on the first five days.
Saturday - Catalina State Park
50-Year Trail is a popular ride starting in the park, and you can get to a larger system of trails to the north. Driving from the park it's a quick trip to either
Honeybee Canyon or
Tortolita Preserve (easier).
Sunday - Box Canyon
Arizona Trail (singletrack) and Forest Service roadsMonday - Colossal Cave Mountain Park
Arizona Trail and other trails in the park. Also, the
McKenzie Ranch cross-country mtb park (
official park info) is a short drive away.
Tuesday - Ironwood Picnic Area at Tucson Mountain Park
Tons of trails in
Tucson Mountain Park, very gently from the orienteering parking, gnarlier if you go east into the Tucson Mountains.
Wednesday - Cave Creek
Arizona Trail and Forest Service Roads again, other side of Kentucky Camp from Sunday's event
Thursday - Lincoln Park
You could ride in Lincoln Park but a better bet would be to take a short drive to
Fantasy Island. The original trails on the north side are fast, furious, and mildly technical. The south side is as gentle as possible for singletrack.
Friday - University of Arizona
From UofA I'd drive over to
Sweetwater Preserve, a big favorite in town. Another option is to park at Starr Pass or the 36th St. Trailhead for more Tucson Mountain Park access.