That's my problem. Thought I was riding enough to know how to pace myself, and we're riding below that level. I figured this was easy, maybe to easy, but I stuck with the group. Then the cramping totally changed everything, where I struggled to finish.

The ride had more elevation gain then my normal rides. I think this was a determining factor, even though I took it easy spinning up hills without mashing.

Thanks again everyone. I'll keep working on fitness. I see now it takes lots of time that can't be rushed.