I finished The Santa Clarita Half Century (http://santaclaritacentury.com/) in 3 hrs and 20 minutes. The mileage wasn't too tough for me as I've done solo training rides between 40-60 miles in the past. The climbing was challenging though as we climbed just over 3,000 feet by the end of the day. We had a pretty strong headwind coming home, but thankfully it was on the downhill portion. Nonetheless, the wind made it necessary to peddle consistently and work hard on the way home. I was hoping to complete it closer to 3 hours, but I'll have to work towards that goal for next year.