So eight weeks ago I joined a ladies running club and it is going great. On my own I can already run 8 k, all be it very slow, in about 1 hour and 5 minutes. I am entering a 5 k race in ten days and slowly want to improve and run longer races. My question is: Has anyone become a regular runner after gastric bypass surgery? Has anybody ever ran 10 k, half marathons or even a marathon? If so, what would you advise re nutrition? Is it even wise to try and run a marathon after gastric bypass surgery? I am far, far away from running a marathon at the moment but would love to improve and build up my running ... my body is craving it now. My goal is a half-marathon in 1 or 2 years time ... if it is feasible for gastric bypass patients, that is. Any advise would be appreciated.