marathoner
marathon runner
road runner
long-distance runner

"You've got to be a long-distance runner in this business."

"None has matched the Jewish community as long-distance runners in the civil rights movement."

Some long-distance runners constantly feel pain in their feet when they exercise.

The same way that a long-distance runner feels good once her body has gone beyond simple exhaustion.

Once the skiing season is through, around Easter, long-distance runners take over.

He never managed to rise to the very top of international long-distance runners, however.

But with a long-distance runner the sense of defeat is often written all over the body.

"We have to put some demands on middle- and long-distance runners," he said.

Over the next two decades he turned out scores of dedicated long-distance runners.

He had the tall, lean build of a long-distance runner.