The Mileage Trap: Why More Isn't Always Better for Young Runners

I want to talk about a mistake I see every single summer, and it's usually well-intentioned. A kid runs a good spring track season, gets excited, and decides the way to get better for cross country is to just run more. More miles, more days, more volume, stacked on top of a body that's still growing and hasn't built the support system to handle it yet.

Mileage isn't the enemy. Blind mileage is.

Here's the thing about young runners specifically. Middle and high school athletes are dealing with growth plates that haven't closed, connective tissue that develops slower than muscle, and a training age that's usually only two or three years deep. Piling on volume without building the surrounding strength is how you get shin splints in September and a season-ending stress reaction by regionals.

I've coached at the Division I level for years now, and the pattern is consistent. The athletes who get hurt the most aren't the ones who train the hardest. They're the ones who train the most one-dimensionally. All running, no strength, no mobility, no variation in surface or intensity. The body adapts to what you ask of it, but it needs more than just repetition of the same motion to actually get more durable.

This is the entire reason our strength and mobility program exists as its own thing, not an afterthought. Two strength sessions and two mobility sets a week, built around a race calendar instead of against it, is what turns a fragile 20-mile-a-week runner into a durable one. It's not about getting bulky or slow. It's about giving the tendons, hips, and core the capacity to hold up the engine you're building on the roads.

If your athlete jumped their mileage up over the summer, this is the moment to ask whether the rest of the training matches it. If it doesn't, that gap tends to show up right when the season gets important, sectionals, regionals, semistate.

Want a training plan that actually accounts for your athlete's growth, training age, and injury history instead of a generic mileage chart pulled off the internet?

That's what 1:1 coaching is built for.

If strength and mobility feels like the missing piece, start there.

If you want to understand how our training group structures load across a season, see how it works. And if you're not sure where your athlete's current training stands, just ask me directly.

More isn't the goal. Durable is the goal.