I think realistically speaking about a hour and a half is the most I could do, and that would only be for a WG who is really well reviewed and I've really wanted to fuck for a long time. I've got to take into account my windows of opportunity are at most going to be about 5-6 hours, if I'm lucky, and I've got to fit in getting the coms done in that time too, and I also ideally want to wash beforehand and when I get home, and I'm limited to public transport too, so really anything more than 30-45 minutes travel each way, with a 1 hour punt in between, can be pushing into risky territory for me.
I would consider longer though, if I had a whole day opportunity and it was somebody like say Woofie, MissKDD, Alizee, or Ameera, for example, or a threesome involving girls of that like, then I'd happily sit on a train for multiple hours each way. But realistically speaking chances like that for me are either very rare or would require a lot of excuse making, and I'm not a huge fan of excuse making if I'm to be honest, done it in the past, and would rather not do it again, not when I can easily get a decent punt within half a hour in Brum. Yeah, it adds to the thrill and opens up options, but it also adds to the stress, and I don't think punting and stressing are two things that go together well at all.