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Deleted member 8507
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Finally got to my spreadsheet. 19:30 5k, with 350 base over 10 weeks and longest training run of 21 miles will be around 3:26 at normal conditions. If things go well, you could be under 3:20, bad weather, cramps, etc and it drops you to 3:38. I have ran six marathons in my younger days and this calculation was within 7 minutes on all of mine. Might be that it is valid only for me and how I trained.I haven’t ran a 5K race in that time but probably 19:30ish and 35-40 miles a week.