Usain Bolt of tortoises races to world record - BBC News
Watch Why It's Almost Impossible to Run 100 Meters In 9 Seconds | Almost Impossible | WIRED
Usain Bolt - Wikipedia
The secret to Usain Bolt's speed may lie in synchronicity
List of world records in athletics - Wikipedia
How fast does Usain Bolt run in mph/km per hour? Is he the fastest recorded human ever? 100m record? - Eurosport
What is the fastest speed a runner can achieve on earth under normal conditions? - Quora
Eliud Kipchoge Breaks Two-Hour Marathon Barrier - The New York Times
Using segmented regression to analyse world record running times | R-bloggers
100 metres - Wikipedia
Usain Bolt's Split Times and the Power of Calculus | Quanta Magazine
These Are the World's Fastest Half Marathoners - Emily Sisson Sets American Record
100M WORLD RECORD - 9.27 Seconds || The Human Limit! - YouTube
11-year old Jonah Gorevic runs sub-five minute mile at world record speed | USA TODAY High School Sports
Footspeed - Wikipedia
Calculate Speed Worksheet with REAL World Record Runner Data NGSS MS-PS3-1
Speed Comparison of World Record Running Performances from 50 meters to 100 miles. : r/running
Robot sets new record for fastest 100m dash | Popular Science
Kipchoge's Sub-Two-Hour Marathon: How Legitimate Is It? - The Atlantic
The incredible science behind Eliud Kipchoge's 1:59 marathon | WIRED UK
Usain Bolt record collection: the sprint king's greatest hits
The progression of men's running speed for world record marathon times. | Download Scientific Diagram
The maths behind the fastest person on Earth (and no it's not Usain Bolt)
Fastest Mile While Dribbling a Basketball - Dylan Sorensen Broke the World Record Again
What's the top speed of a 100m sprinter? - AS USA
