While viewing a race in History tab, tap on the Share button (the little box with arrow coming up) in the upper right and select Email. If any runners in the race have email addresses in Watches, then they will be pre-populated with those names. Alternatively, you could select Clipboard and paste into an email (or into Numbers or other app).

 If you want a summary of an individual over all their races, go to the People tab, select that person, and tap on View All Races; you then have the same Share choices.