Originally Posted by
Carbonfiberboy
It's almost never electrolytes, dehydration, or stretching, and almost always overuse. Ride more. Particularly ride more hills. If your weekly mileage is over 150, you should never cramp. I know, no hills in Florida but you can do overpass repeats! Or ride in a big gear into the wind 'til your legs give out. If you're riding 200 miles/week, we can talk more.
Ah, but dehydration
is my main cause of cramping ... I've discovered that if my toes cramp (when I'm cycling or when I'm not cycling) I'm dehydrated.