I train six days a week. Typically, I run 2-3 times (one or two short runs + one longer run), swim 3 times (just drills/form right now, only 30 min or so) and ride my bike 2-3 times. My coach says I'm doing more than necessary for a sprint tri but I feel comfortable at this pace, about 10-12 hours a week. Any less, and I feel like jumping out of my skin!

Most of my cycling buddies like to do weekend rides, like centuries or climbing to Mt Baldy and stuff like that. I'd like to join them sometime. But on a bike, I seem to hit a wall at about the 2- to 2-1/2 mark, and I'm crawling home in my granny gear at 3 hours.

I'd like to ride a century, or at least a good 60-miler with some hills on the weekend, but can't seem to do it. Am I just a wimp, or is there something else going on here?