ian wrote:Mark's advice is good. I've had a handful of minor pulls over the years, often during racing season. If the damage isn't too great, you might find that the pain will subside over the next week, in which case slow running might be possible. Faster paces will be off the table for awhile.
+1
A hamstring "pull" is just minor tear where only a small amount of the muscle fibres are torn.
I had this a few summers ago, and after about a week's rest I just needed to cut back on fast running for a while. I could run easy but as soon as I picked up the pace, it would hurt again. So give it some rest and see if you can run easy without pain (but stop at the first sign of pain-- usually this type of pain doesn't subside as you "loosen up"). Don't do any more hills!
I would be that you can still do ATB, but just modify your training between now and then.
I didn't do any physio but my chiro recommended some stretches that helped a lot.
I am extremely bummed out about this because up until now training has been going really well, especially considering I was able to come back from having a 3 week flu over Christmas holidays. I haven't gone to see physio yet, but I'm planning to this week. Just wondering, has anyone had a similar injury? How long did it take you to recover? I don't think it's a bad pull, it doesn't hurt when I massage it, but it starts hurting when I walk on it for any length of time or try to run. I have been icing regularly and using the foam roller. After doing some internet reading on hamstring injuries I'm beginning to wonder if my plans to run ATB are up in smoke 
I have an appt. with physio on Thurs., so hopefully he'll be able to determine the extent of the injury. Resting my leg and not being able to run is driving me batty. I keep thinking about all the fitness I am losing every day I can't run. I did some upper body weights tonight, so at least I felt like I was doing something active. I still really want to run ATB, but the fact that it's 30km w/ hills has me pretty nervous.