I used to bike extensively, one time this guy at the gym said biking didn't work the hamstrings well, though I disagreed at the time. It's good exercise, your stamina will allow for further distances to be travelled and it's easeir to take in the scenery. Jogging is more exertive and I think will burn calories faster, but, I also think there are more gains to be made in burning calories more slowly. The only problem being is that I used to jog year round, I was only able to bike during the warmer months.