I would recommend purchasing a cyclocomputer. This way you can keep better track of your trip distance and the total riding you do. I say this because I find it encouraging to know ok I rode 2 miles today and 4 miles yesterday for a total of 6 miles. Then after while you really see the odometer rack up in to the hundreds of miles for a season. Not to mention if you get a slightly better cyclocomputer you can watch you cadence which I think is useful for gauging endurance.