I tore mine about 11 years ago, but don't remember exactly how long I was off the bike. I also had bad meniscus tear's, so I was 6 weeks, non weight bearing. A lot depends on how bad it is and the type of repair. I had a patella graft, which takes longer to recover from than using the hamstring, but will hold up better. You do start pt immediately after the surgery, to get you recovering as soon as possible. I had to bend my leg into a 90 degree angle, before I could leave the hospital. And yes, it's a very painful experience! If you can push the surgery back to winter, then you won't have to worry about.