Triathlon, running, adventure races, and bike rides (Steve Gribble)
This Week: Workouts, increase in running mileage and things I'm looking forward to – Burpees to Bubbly
Average Running Speed - How Fast Can a Human Run?
Joan Nesbit Mabe on Twitter: "Last thrashing before States ...16 girls under 6:00 and 13 boys @ 5:00 or better. Love XC mile time trial day!!! https://t.co/JfIebGFZ9Z" / Twitter
Average Mile Time: By Age Group and Sex
Classics in the History of Psychology -- Triplett (1898)
Is running 2 miles in 16:30 minutes decent? Can I consider myself in a good shape? - Quora