Want to Run Faster? You Probably Don’t Need More Speedwork
Aerobic capacity, not speed, is usually the limiting factor in how fast you can race, even for a distance as short as the 5K.
Aerobic Training
How Elle Purrier Trained to Run the American 2-Mile Record
Elle Purrier's coach, Mark Coogan, explains the gradual buildup of a big aerobic base for the American record holder.