I have been planning a cross country bike tour for awhile to lose weight and for the experience. I am in between job assignments, so its a good time. Riding a lot of 30 mile day rides and recently back to back 45 miles on a fully loaded LHT. I weigh 290 and the gear, tent, etc. Is every bit of 50 lbs. The bike feels like a tank, but rides well. Stamina is fine. My problem is pain in the area just inside the sit bones, kind of where the butt cheek meets the leg and crotch. Starts around 20 miles. It hurts the most right when I stand up off the seat, but standing and pedaling upright brings relief. Temporary relief. I'm okay with taking longer to finish the tour and going shorter daily distances (50 miles a day seems reasonable to me), but I am having second thoughts about it due to the pain in that area. I am womdering if my sheer weight on the seat, a brooks B-67, is creating an unresolvable problem. Its fine till I get about 25 miles in. Any suggestions? Am I just too heavy? I do use cream and riding shorts.