Klongsanan was running the Chombueng Marathon in the Ratchaburi province in Thailand when she noticed something strange.

When I got to that spot, I saw a little tail wagging.

Right then and there I made a promise that I was going to give my life to this dog.

I was really nervous that someone was going to step on her, she said.

However, she knew there was no turning back.

I was really tired and weak by that point.

I think the last five [kilometers] took me almost an hour.

you might follow Klongsanan onInstagramto stay up to date with her and Chombueng’s adventures.

Runner Khemjira Klongsanan stopped mid-marathon to rescue a puppy on the side of the road.

When I got to that spot, I saw a little tail wagging.

Right then and there I made a promise that I was going to give my life to this dog.