yeah weight training is definitely different that running; swimming & cycling for sure. I think you can tell if you are over training in these sports but you need a long period of time to discover that 1) you are not gaining mass; strength or speed 2) have suffered an "overtraining" type injury

I like to ride hard, as hard as I can (2 hrs) and then rest those legs and glutes for at least a couple days. Alternating with other sports allowed me the luxury to make the most gains in mass and strength.

I was working for body transformation which may not be your goal so your training may be focused differently.