I'm thinking of participating in an open water relay event simply for the fun of it.
Those of you that "do" open water in addition to pool swimming, can you predict in any meaningful way the difference in speed?
I realize the water conditions make a huge difference. I'm talking about a relatively calm freshwater lake.
If I can swim 1000 yds in 15 minutes in a pool, how fast might I swim that same distance in a lake?