Apologies if this has been posted already. Todd Kenyon of TTBikefit did his slo-mo camera work at mile 24 of last year's Boston. Check out Shalane Flanagan around the 6 min mark. I could watch her run all day long. running pjorn.
https://www.youtube.com/watch?v=MFxPlUKrZPQ
ps. this is mile 24. for me its usually death march time at that point in the marathon
https://www.youtube.com/watch?v=MFxPlUKrZPQ
ps. this is mile 24. for me its usually death march time at that point in the marathon