You can find the map, elevation profile and GPS files on Mark Wallace's site. They made a couple small changes to the course last year including going across some private land that was open only on race day. Last year was my 4th time doing the Silver Rush 50 and I've finished the Leadville 100 5 times. The Silver Rush is much tougher per mile than the 100. As Ken says, "It's like the 100 with the easy sections taken out." That said, the courses are totally different and don't even come close to each other.