My longest ride ever - 22 miles today on my Trek hybrid following my lovely wife. We have a great trail here in Greenville, SC...the Swamp Rabbet Trail - goes 11 miles one way to the next little town. I thought it was flat, but it was rising slightly - about 220 feet...made the return trip very easy. We stopped for a mid morning refreshment, and rode back. All in all, this nearly-flat course does not feel as difficult as riding 7 miles in our hilly neighborhood. But I did decide it was time to buy some padded shorts...