Was asked by my son to accompany him and a buddy on a three day ride from San Diego to Arizona. At 72 years of age, I was a bit hesitant to try this, but decided that I could quit if it got too tough for me.
We started at Ocean Beach (San Diego near Sea World) and spent the first night at 3600 feet above seal leval in Pine Valley, CA - about 51 miles and 4000 feet of climb.
Next day was a joy with a huge downhill into the Imperial Valley. Stayed in Brawley, CA, after peddling across desert and farm fields in cross winds and tail winds. Drank copious amounts of Gator Aid. Did about 92 miles.
Last day was a desert ride to the border with a stint through the Imperial Dunes - spectacular Lawrence of Arabia country, but on bikes instead of camels. Must admit that last 25 miles I was a "wheel sucker", running low on body fuel.
Despite all the water and Gator Aid consumed, I lost an inch of waistline and 8 pounds. I really can't afford either, being on the slim side. But, it was a lifetime experience, and I'd do it again in a heartbeat. My son and his best friend were a joy to be with and we had lots of laughs along the way.