12
votes
4answers
2k views

How does having a pacesetter help set a record?

Often pacesetters are used to set the correct pace to help break a record. For cyclists there is an obvious physical advantage in running in a group, as those in the middle/back of the group have ...
34
votes
3answers
982 views

Why is the marathon World Record not 2:03:02?

Why exactly is Geoffrey Mutai's 2:03:02 in Boston (2011) not the marathon World Record?