Monument Park Road is fairly close and easily accessible from Pagosa Springs. Drive out Piedra Road and turn left on Turkey Springs Road (FR 629). Drive out a couple miles and park at the intersection with Monument Road (FR 630).
This ride starts at an elevation of about 8000 feet and climbs up to about 8700 feet. There is 1430 feet of total ascent. This route, to the end of the road and return, is 15.5 miles. It is mostly a fast gravity ride on the return leg.
View TOPO! map attached at the bottom of this page.