Stride length is the distance between heel strikes of two consecutive steps with the same foot during one gait cycle. Stride length is a factor of speed (speed = 2 x steps/min x stride length) and is correlated with height.
Stride length and probability of stress fracture - By reducing stride length by 10%, probability of tibial stress fracture was lowered by 3%-6%, or alternatively would mean an additional 2 miles/day could be run while maintaining the same probability of fracture. Edwards, W Brent, Taylor, David, Rudolphi, Thomas J, Gillette, Jason C, & Derrick, Timothy R. (2009). Effects of stride length and running mileage on a probabilistic stress fracture model. Medicine and Science in Sports and Exercise, 41(12), 2177–2184. https://doi.org/10.1249/MSS.0b013e3181a984c4