I race cat 4 so I don't do many long rides (centuries, organized rides, etc...) my longest was 75 miles last year prior to the Death Ride. But I do ride hills and lots and that really helps. A favorite of mine prior to the Death Ride is to ride up highway 9 at a good pace usually for me is 38-40 minutes turn around come down as fast as possible and turn around and repeat trying to get up it around 40-42 minutes. I would do this typically on a Sunday the day after a race. I also like riding up highway 9 trying to be under 35 minutes then right on Skyline to Page Mill turn around and come down and then go up 9 around 45 minutes and then come down. Last year I did that from about May on and my total time was 8:30 hours with some mechanical issues on top of Ebbetts.