1.   Hikers, bikers, snowmobile riders, and other outdoor enthusiasts are increasingly using the roads.

2.   Here in Colorado this recreational segregation has come as snowmobile riders have expanded their reach with more powerful machines.

3.   In Colorado this recreational conflict has come as snowmobile riders have expanded their reach with more powerful machines.

4.   Whether or not the environmental groups succeed, their petition highlights sharpening conflict between snowmobile riders and cross-country skiers on public lands.

5.   A third snowmobile rider was killed by an avalanche Friday at Elliott Lake, where the British Columbia, Alberta and U.S. borders converge.