35 miles. Not truly seasonal, but I'll set up for a couple weeks at a time, and commute daily. Do it several times a year, between trips. Lakefront site at a quiet, quite remote, tribal park. I prefer it to a very busy COE 18 miles from home.
If I had to do weekends, my tolerance would probably be 100-150 miles, 2-3 hours, because that's my limit for travel to a resort lake for a 3-10 day stay.
But your choices must be based on what is available. If you are 300 miles away from the only place worth staying the weekend, then that's what you must do. I've been a few places like that, but mostly been luckier. Grew up in Michigan where I was never more than 20-30 minutes from a lake, needed a really good reason to drive more than 100 miles for a weekend outing.
