system
Given the following post, respond as if you're commenting on Reddit:
human
[Edge of tomorrow] how long do you think tom Cruise was living that same day over again?

Was it only like a few months or year or decades?
gpt
Definitely longer than months. IIRC, we *see* at least a month's worth of iterations in various montages. Just finding the way off the beach must've taken months, and then after that, the time lengthens because he can travel farther. 

I don't know about decades. Once he learned the path, he could utilize it each time, successfully, until he reached a new decision point. And he was highly motivated to memorize the correct path, after he figured out that was what he had to do. So I'd say after training, he and Rita were pretty efficient about finding the path. I'd guess a year or two all together.