[smileyman]

Depends on alot. Temperature, type of ride, pace. I have been known to refill after 160 mi while sittin' on the bike and go another tankful. I rode back from the Dragon one day, close to 12 hours, but that hurt. I used to endurance race and do hour twenty minute stints, very tiring. Most canyon rides though we stop often to bs, avoid traffic, site see, ect