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doing GNR. Was really struggling to make headway in training which was mostly 8 - 11 mile hilly trail runs, until last couple of weeks - times have just fallen away. Last weekend a very comfortable 46:15 10k on trail and 9 miles at 7:55 pace on road, today a flat out parkrun at 20:44
I know the 5k pace ought to mean well under 1:40 for a HM but I am 6'2 and have a BMI of 28. Plus prior to running I was a rower so power/lactate tolerance on short efforts has never been an issue. I feel like the standard pace prediction formula assumes a low 20s BMI and high level of aerobic fitness, because that's the typical profile in running.
Should I just be confident and go charging after a 1:37 in 3 weeks time? Or have other s found that being an atypical shape for a runner means a bias towards shorter distances?
next year I might try and fix this by losing some weight...