Posted: 25/11/2015 at 14:34
It's not the same but using a static bike, or a treadmill might be easier and will at least keep your cardio system going Static bike will also exercise some other muscles which isn't a bad idea (or if you have a real bike, use that). Or just run a bit less that week use it as a recovery week, work hard for two weeks, and have a recovery week every third week, most plans have each 4th week as recovery week, so do similar. Keep the runs shorter, but depending on how often you run maybe do more. 4 or 5 x 8km runs?