I ride for fun but I think because I am a former college basketball player and a former competitive distance runner, I am always challenging myself on the bike. Although I haven't yet raced on the bike (and I may never race), I am always pushing myself and I guess you could say I compete against myself. I usually average about 18 mph during most rides and I've done some sprints getting up to 25 mph. When I commute to work, I "fly" in the morning trying to get to work on time and I "fly" home in the evening so I can get home to my kids to make them dinner. I should probably back off some day so I can enjoy the scenery!