This was posted over in the road cycling forum, but it was suggested I post over here.
My wife and I are riding the 3 state 3 mountain in May this year in Chattanooga and it'll be our first mountain century. This weekend we rode a 55 mile ride in the mountains (4500 ft of climbing and took 5 hours) and that was the hardest ride I've ever ridden. So in a month we have to at least double that. Anyone got a good link or ideas on training for this thing? I'm beginning to think it's too much too soon.