Swimming

I went swimming for the first time in literally years today. Boy it was a great workout. I can't remember the last time I felt that exhausted. Perhaps Santa Fe and the high altitude workouts. I mean, ever since then I've been trying to run harder but swimming was definitely a tough workout. And I didn't even swim very long or very far.
At least once a week now, I'm going to head to the pool so I can at least improve my endurance in the water.
I believe strongly that will transfer to better running speeds and better strength.