I read in the Rogue's Gallery that you were recovering from a bulging disc. I'm getting over 3 of them that had my right leg weak, nearly uncontrollable, and throbbing at night. I was a runner until this happened and the doctor said bike, but no running until he says so. The pain went away in a week or so but I haven't ran since May 30. I was off to a good season too. In age division competition (50-54 y.o.), I placed 3rd in the Mississippi Marathon and had 3 wins and a 3rd in the 4 local 5k's I got to run before the injury hit.
I'm doing the McKenzie exercises per the doctors orders and hope to be back running soon. I'm making the biking fun though, with 2-3 daily rides of 14-15 miles and my weekend long ride is up to 47 mikes. As of now, I'm riding a Wal-Mart mountain bike that my son lost interest in. I put road tires on it but that's the only thing I've done.
If something prevents my return to running and I continue to bike, I'll look for a more appropriate ride.
So tell me about your disc. Where were your areas of pain?