Im my experience (and as MichaelW mentioned in post #2 of this thread), long break-in rides aren't the best idea for Brooks saddles. The B17 doesnt' seem to need much breaking in at all, but the Team Professional did take a few rides. Give it a good coating of proofhide and let it soak in for at least 24 hours, then keep the rides short for the first week or two. My Team Pro took about 100 miles to become one with my butt, with rides of 10-20 miles at a time... I've heard the Swift can even take a little longer.