London marathoner helps struggling fellow runner cross the finish line

A London Marathon runner sacrificed his race time when he slowed to assist a fellow runner struggling to finish the race's final stretch.

As the BBC reports, Matthew Rees came to David Wyeth's aid just short of the finish line.

A clip of the moment shows Rees guiding Wyeth toward the end of the race, before a marathon volunteer comes to assist. Together they helped Wyeth finish out the race.

Members of the Royal Family looked on as the pair helped the struggling runner reach the end of his race.

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As a BBC commentator notes in the clip: "You can see Prince William and Prince Harry looking out just in disbelief at what they're seeing there— the camaraderie, which is what the London all about."