I track only vaguely. So I know that last year I did about 1200 single bike miles and 1800 tandem bike miles. This year I think it will be closer to 1600 single and maybe 2800 tandem? I just try to ride anywhere from 60-150 miles a week, depending on what life is permitting. Have added a short steep hill to my single rides, which I do at least once, and sometimes twice, and want to keep working on hills.