Most longshots odds-on favorites usually don't make it to the wire.

But six horses managed to do just that, racing neck-and-neck down the homestretch and pulling off stunning upsets to win races that were considered longshots before the start of the race.

Here are six of the most memorable longshots on race day:

1) Gun Runner

This horse was picked as an underdog by many, but he proved why he was one in the Kentucky Derby.

He battled through the entire race, coming from last to first to win easily.