I would like to attempt the 63 mile option of the bike tour tomorrow morning. My longest ride so far this year has been 35 miles. I was tired towards the end but finished pretty well I think. Do you think I could jump from a 35mile long ride to 63 in one week? This is just a tour, with snack and lunch stop, and I'll have my gatorade bottle plus probably a snack on hand to make sure I have enough to keep me going. The first 35 miles are flat to rolling, the last 28 are rolling to hilly.