Summary by PJAMM’s Ron Hawks.
Alpine Summit can be climbed from two different directions (East near Hwy 92 and West near Hwy 39). This road is also referred to as Alpine Loop. The eastern climb is over a good road with some traffic up to Sundance which is a tourist attraction owned by Robert Redford. After getting past Sundance, which is about 3 miles into the climb, the remainder of the climb is a blast. There are several switchbacks and the scenery is amazing as we ride through a thick forest of pine trees and quaking aspens. The road does get a little narrow but the traffic is a lot less than the beginning of the climb and was never really an issue for us. The grade is pretty consistent with the tougher sections early on in the climb. After 9 miles we hit the summit which is marked with a sign that is just under 9.000 feet.
As for the western climb, there is considerable more traffic as it's near the great Salt Lake City. It's also the road to the Timpanogos Cave National Monument which is a very popular destination where you can take a 1+ mile hike (straight up) and attend an amazing cave tour. Once you get passed the cave, which we reached after a few miles, the traffic decreased considerably and the views opened up of the Wasatch mountain range. The grade was pretty shallow in the beginning and increased after the Timpanogos Cave and stayed pretty consistent. Like the eastern climb, a few switchbacks and thick trees really made the ride very enjoyable. After 11 miles we hit the summit which is marked with a sign that is just under 9.000 feet.
Road conditions for both roads are pretty good with a few potholes at the beginning of the eastern climb before getting to Sundance. As for traffic, this is a climb that's probably better done in the middle of the week as traffic will be a little less than the weekends.
Thank you Ron Hawks!