I log my miles, ave. speed, etc. . on bikejournal, and also keep a hard copy of my miles on my desk. I have a revised goal of 3,500 miles for the year (I started with 2000, but when it was clear that I was going to reach that by July or so I revised it.) I have over 1800 right now. I want to work on my average speed too as it varies quite a bit.