WATCH: Heartwarming video shows running duo connected by rope and friendship

Using a short rope and their trust in each other, Rebel guides Paul Scott, a visually-impaired high school runner through cross-country races.

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Rebel Hays may be the tiniest one on the course, but he has the most important job.

Using a short rope and their trust in each other, Rebel guides Paul Scott, a visually-impaired high school runner through cross-country races.

Watch 11-year-old Rebel lead 15-year-old Paul to the finish line in the video player above.

“We’d never had anyone who is younger than the runners. So my first reaction was, ‘This kid’s tiny!’” says Paul’s mom, Velleta Scott. “But then I saw him run. I was like, ‘Whoa, he’s amazing!’”

Rebel says he just loves to run and be able to help Paul. Paul says Rebel encourages him to run even faster.

The duo started off just running two-mile runs and have now graduated to 5Ks.