Share 'Plan modifications - Specifically substituting something else for swimming....'

So right now I am just starting week 4 of the pre-season plan(week 6 total). I use a bike trainer at home, run outside for most of the runs, use an indoor track for the track workouts, and swim at the YMCA. I'm finidng that I can't seem to get to the YMCA to swim three times a week. The bike and run are easy to squeeze into random places during the day, but finding a way to get to the pool three…