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I'm all signed up for doing the Great North Run in September, training is going well, but I'm now wondering how big a jump it would be to look at doing a full Marathon.
Please no 13.1 miles as an answer
My current training has got me doing around 20 miles per week with my longest run so far at 10 miles, taking around 1hr45. I'm totally loving it and know I could go further. Doing my long runs I have to force myself to stop and it always get my head wondering about how big a training jump etc it would be to get to Marathon level.
Any advice would be greatly received???