I've long since stopped being an even somewhat regular poster at BF, though I was still riding my bike a fair amount. Last spring and into the summer I had some of the best on-the-bike form I've had in my life. But with family commitments, the need to work on some projects I will need if I hope to get tenure, etc., I didn't make it to any races (other than a triathlon), which had been my goal. I also began running a great deal more as it was easier to fit in than bike rides.
Then school started, including the necessity for me to assist in getting my son to kindergarten. This necessity means that I do not commute by bike nearly as much as I used to. Still, I was getting the rides in and holding on to the hope that I would still make a race this fall or, at the very least be ready for the spring.
But in subsequent weeks, I've been running more and more (easier to fit in) and riding less. Today was the first day this week I worked a ride in -- rode my bike to work (~11 miles, and will ride home), but was looking forward to my 8X400 workout at the track the whole way. And this week, my running total will exceed my biking total for the first time in, well, since I started riding somewhat seriously about 12 years ago. I guess it makes sense -- I've done better in my age group in 5ks than I ever did racing my bike.