Terrible experience and it shows my vanity and stupidity. For Father's Day, son and his wife took me on short 3 day camping trip. They only had road bikes so the gear went on my trailer/touring bike and off we went. Now we're talking 2 young (late 20's), very athletic folks who just couldn't understand why we weren't doing 20 - 22 mph as we zipped along the highway. Long story short, with just over 80 lbs, a fairly flat ride, 126 miles later at an average speed of just over 13, yours truly could not move! Moral of the story.............vanity is still alive and well at 60+ or more simply put.........stupidity knows no age limits. 5 days later and I just now feel like I have some energy to ride.