A very speedy dog snuck into a high school relay race and ran the final 100m almost as fast as an Olympic sprinter

• A very speedy dog emerged from nowhere to "win" a high school relay race in the USA.
• It ran the final 100m in 10.5 seconds, almost as quick as an Olympic sprinter.
• "I was afraid that I was going to trip over it," Logan High School's Gracie Laney said after.

A very speedy dog emerged from nowhere to "win" a high school relay race in the USA, running the final 100m almost as fast as an Olympic sprinter.

The dog, named Holly, escaped from her owner's clutches and burst onto the track during the final leg of the 4 x 200 meter race in Utah, before racing Logan High School's Gracie Laney down the home straight.

Holly crossed the line ahead of Laney, almost tripping her in the process, while clocking a time of around 10.5 seconds for the final 100m - one second shy of Usain Bolt's world record, and a pretty laudable effort for most elite sprinters.

Bolt set the world record for the 100m at the 2009 IAAF World Championships, running the distance in 9.58 seconds.

"At first, I thought it was another runner and I was surprised because we had a pretty good lead," Laney later told KSL.

"As it got closer, I thought, 'That's too small to be a person,' and then I noticed it was a dog," she added. "I was afraid that I was going to trip over it."

Watch Holly the dog's amazing sprint here:

While the crowd in Utah were thrilled to see Holly on the track, the canine competitor was not awarded victory in the race.

Instead, that prize went to Laney and her team from Logan High, who crossed the line in an impressive time of 1 minute 59.27 seconds.