FWIW, I asked about masks while running with a recreation CM yesterday. She said the policy is no masks are required when sitting at your chair/space at the pool, in the pool, or while exercising in the gyms or running paths. CM info, so take with grain of salt.
I specifically asked about the running paths - I’ve run the last few mornings and I did wear a mask as you tend to come across CMs, landscapers, etc, so it felt like the right thing to do. It was tolerable, although not that pleasant.
Other runners I have seen have not been wearing masks.
FWIW!