Long Runs Matter
Miler training often involves long runs of 18 to 20 miles, which may surprise many who associate such distances with marathon training. This endurance work builds the strength necessary for effective racing, allowing runners to confidently tackle fast starts and maintain speed in the final stretch. Ultimately, higher mileage plays a crucial role in preparing middle-distance runners to perform at their best when it counts.In this clip
From this podcast

The Strength Running Podcast
Episode 53: How to Run a Fast Mile, with NCAA Mile Champion Henry Wynne
Related Questions
How do long runs fit into training plans?
If I already have a base of a solid 4-4.5 miles, is it a good way to build up to long runs by doing a running workout like the ones in the episodes s2/e19 How to Use a Track as an Endurance Runner with Jason Fitzgerald of Strength Running and Building Speed?
What matters more when trying to run longer distances: total miles throughout the week or longer runs on a particular day, as discussed in the episode 280. How to Keep Improving As a Master’s Runner (a new coaching call!) and the clip Building a Strong Foundation?