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.

Enhanced 400-m sprint performance in moderately trained participants by a 4-day alkalizing diet: a counterbalanced, randomized controlled trial, Journal of the International Society of Sports Nutrition

The 800 Meter Runner: Speed (Type 1) - Complete Track and Field

Canandaigua's Ajavon dashes to sprint trifecta

Can You Believe THIS Is Considered a Sprint!?

400 metres - Wikipedia

male runner starting blocks of 400-meter sprint at competition Stock Photo - Alamy

Sunset Track: Legacy's Jeriel Thomas eyes state championship, Boys Track & Field, Nevada Preps

How to Train for the 400-Meter Dash

400 Metres