Hey gents, ladies. I took a 50 mile ride last week, and at about the 30 mile marker I started to get intense leg cramps in my thigh and inner thigh; I had to stop several times and ended up limping home. My average speed went from 17 to 15.5 between miles 30 and 50.

I'm not the best cyclist, 5' 9.5", 165 pounds, do about 40 miles during the week and another 50 during the weekend. I ate a power bar at mile 30 and had two 30 ounce bottles of water; by 30 miles in I was through with one of them.

It was 95 degrees outside and extremely humid (I live in Houston) was I not drinking enough water? I have had exhaustion problems before but I've never started cramping before I was even tired. I took a Vitamin B supplement and drank a 5 hour energy shot before I started the ride. I stretched a little bit, but maybe not enough.

I had a bowl of some instant rice mix before I started (about 600 calories worth) and did not drink alcohol the night before.

Or is it the heat? What do you guys think? Much appreciated, sorry for the long post.