I have been training for the marine Corp marathon this summer. I have been dealing with an injured knee for the past couple of weeks. I went to my PT today and he told me it was a torn meniscus. The marathon is in 3 weeks. He thinks if I take it easy, ice, and heat it should heal enough to go on race day. I told me to do cardio in short bursts ( rower or arm bike) to keep my vo2 max numbers up. Has anyone had a meniscus injury and it healed without surgery?