Riders of all abilities are welcome to participate. Feed stations are strategically placed, and vans will patrol the route to give fatigued cyclists a ride when needed and to provide mechanics to help with repairs.

A spaghetti dinner at the Holiday Inn Sunspree Resort will be held at 6 p.m. To register visit www.cycleyellowstone.com.

TREE CLIMBING EVENT

The 14th annual Utah Tree Climbing Championship will be May 9 and 10 in Provo.

Competition consists of five events — work climb, aerial rescue, belayed speed climb, secured foot lock and throw line. There will also be a tree climbing event for children.

This year's winners will receive $100, and the master's challenge winner will receive $1,000 toward the cost of attending the 2008 International Tree Climb Competition in July.

For a registration form and information, visit www.utahurbanforest.org/events.html or call 801-568-2916 or 801-971-0795.