Originally Posted by
electrik
What if race day isn't sunny and 21c? You would be untrained for such an event!
My father went prepared to a triathlon that got canceled. While running and canoeing would have been fine, the road bikes were a no-go with 6 inches of snow and downed tree limbs.
If you are training you keep to a schedule. Personally I like schedules with some slack, but that's just my style.