Cramps during the swim

Looking at your logs it looks like you just started swimming in August. So at this point unfortunately, as far as prevention, just make sure you are well hydrated the week of the race. Also, are you kicking quite a bit when working out? If so, you may try to let your feet drag more. Are you getting the cramps pushing off the wall? Everyone gets these when you are getting your swim fitness going. I got them too when starting back. It took me a couple of months before I really didn't get them anymore, and I am a swimmer.  Will the swim be wetsuit legal? A wetsuit will pretty much keep your legs floating so you don't have to kick much. So IMO, wear a wetsuit if you can, and try not to kick a lot. I hope this helps, and good luck on your race!

cramps happen to lots of folks, even seasoned veterans.  but as previously stated, you don't want your whole calf to cramp up.  cramps can happen for lots of different reasons but here are some things that have worked for me in the past:  massage the arch of your feet on a semi-regular basis, stretch before you swim and make sure you are well hydrated.

if you are coming off of another workout before swimming, stretch for a longer period of time than if you are heading to the pool for your first workout of the day.  also, work on ankle flexibility outside of the water.