Or, to make it more impressive sounding - say you have 16 weeks in the semester...if you plan on riding (on average) 4 times per week, that would be a total of 64 rides. You could say your goal is to ride 65 times before the end of the semester and then you could do a count-down to keep track. Then you could translate that into miles...say an average ride for you is 10 miles...you could shoot for 10x65 or 650 miles before the semester is out! That sounds REALLY impressive and yet it's do able (if you use your own averages, of course).