Said to be the hardest one-day ride in North America. http://www.sonofdeathride.com/index2.html 138 miles; 17,000' of climbing; highest point=9,200' Sherman Pass Max. FIETS score: 12.13 (miles 68.0 - 83.8) I noticed I had a broken spoke at mile 23 in Kennedy Meadows and had to ride slow and careful the rest of the way, and the roads were in terrible condition after the initial climb; the combination made this an even more difficult and longer ride that it would be with a sound bike and good roads. See the write up (with pictures) at: http://redkiteprayer.com/?p=3386 More pictures: http://www.flickr.com/photos/8422813@N05/sets/72157620005959592/ Note well: The turn around point comes after almost 70 miles of riding with about 9,200' of climbing, and leads you up a 15 mile ascent to Sherman Pass, a climb of over 5,300' and an average grade of 6.6% which is ranked as the 4th most difficult climb in California! (The start of the ride is also noteworthy in that it begins with a climb up 9 Mile Canyon which is ranked as the 19th most difficult climb in California, and where you should not be surprised to encounter 30 mph head winds. This initial climb actually continues after a short respite and I consider the start of the ride to be a 15 mile climb with an elevation gain of 5,000'.) This out-and-back route is from my Garmin Edge 305, and there are two gaps in the data which are represented by straight lines in the route. The first section of missing data starts about 45.4 miles from the start and is represented by a straight line (1.29 miles). The second gap in the data is for 1.42 miles starting 55.3 miles into the ride, and is represented by a straight line (.56 miles).