Sam25
Silver Member
Hi Martyn... there is no reason you shouldnt start running at the weight you are now as long as you take it slow. Why not spend the next 10 weeks following the runnersworld starter plan (link below) and then let me know when need a training plan for the marathon..
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The Total Beginner’s Quick Guide To Running - Runner's World Beginners
The Total Beginner’s Quick Guide To Running - Runner's World Beginners