This is interesting. Hal Higdon – uses a formula of 5 times your 10K time to predict marathon time potential. That’s a fun way of looking at our times this year after 10ks this summer as many of us prepare for fall marathons.
This turned out to be in the ballpark for me last year. I ran a 10k in 1 hr 2 min in June and did my first marathon in October in 4:57. (1:02 x 5 = 5:10 marathon prediction.) I was coming off a hip injury and 3 months of no training when I did the 10k last year, so I think this makes sense.
It’ll be fun to see how things go on Saturday.