Alpine Loop (SR 92) in Utah
The Alpine Loop Scenic Byway (otherwise known as State Route 92 in Utah County) runs from I-15/US-89 near Highland to US-189 in Provo Canyon (or the other direction, depending on where you start).
The 27-mile road is a favorite climb for local cyclists and a major section of the Tour of Utah.
Distance: Making a full loop starting at the bottom of American Fork Canyon or Provo Canyon runs more than 40 miles. The route up American Fork Canyon has an elevation gain of a bout 3,000 feet with about 6.7 percent grade.
Scenery: Steep cliffs, thick aspen groves and a few incredible views of Mt. Timpanogos.
Best Time To Ride: Spring. The road is often closed to cars into late May (still closed in early June in 2011). The fall colors are incredible in the fall, but the road attracts a lot of auto traffic because of it.