I rode in on Wednesday (4/26), Princeton to Piscataway, NJ. It's over 20 miles each way, but not certain of the exact amount.
3/4 of this commute is on the towpath alongside the canal. I saw only 2 people on the way in and dozens on the ride home. THe ride was what I expected it to be. I had to wait a minute or so to cross two roads, but it wasn't bad.
The only thing I would change is that I would wear long finger gloves if the temps are in the 40s again.