The 400 Is a Sprint

The 400m is a sprint; the 800 is the hybrid. And although speed training for the 400m seems counterintuitive, it should be the priority.

43.03 – The Fastest 400m in History – Žiga P. Škraba

400 Metres

Relationship between 400 m season's best (SB) and the maximal

Why Does Usain Bolt Run in the 400 Meters?

Sprint, Speed, Technique, Technique Training

How to Run the 400 Meter Dash : 7 Steps - Instructables

Olympic Sprint and Relay Rules

Cherry Finishes Fourth in 400 Meters – LSU

Michael Johnson's Racing Strategy in the 400 meters

Building Your Sprint Programs Through 400 Meter Training - ppt

6 Phases of A Perfect 400m Race - stack

North Farmington track runner Jordan Johnson sets 400-meter record