One of my commuting goals this year was to ride 1000 miles by mid year and I got to that milestone in 6 mos and 1 day! Really wanted to hit that within 6 mos but as luck would have it I have been off the bike for two weeks due a rigorous week of work and then a fishing vacation.
By riding extra miles on each commute I was able to hit this milestone in under 50 round trips. In fact I did it in 35 1/2, the 1/2 was the double flat, in the pouring rain commute which I am not proud of. Last year I rode to work 47 times and rode 1,100 miles so my next goal is to exceed last year's accomplishment. I am not sure how far I will knock the ball out of the park but it's clearly going to happen because there is still plenty of time and great weather ahead!