We are running the same course as last year, still starting and finishing at Timpanogos Park. Course description is the same for both courses:
Know the course, run with someone that knows the course, or be able to follow course description and or GPX course maps. This is a very challenging marathon course. If you run a 3:30 marathon expect to finish this race between 5-6 hours. There is 5,883 feet of elevation gain on Marathon course. The course is made up of 99.9% mountain trail and fire break roads. The only asphalt that your trail shoes will touch is a few crossing as you traverse northbound at the lower elevations. There are sections of accent and decent that will be technical but extremely scenic. As in the past you may experience snow, rain, mud, potential stream crossings but without a doubt - rocks. Although the distance is that of a traditional marathon, it is anything but traditional. There will not be porta-johns, mile markers, spectators, or volunteers showing you which way to go. You should treat this race course like an ultra-distance race.

The Timp Trail Marathon and Half - Race Reviews