It is a popular opinion that it's easier to do something when you have fun doing it. Well, one of the most fun activities at races is costume-watching.

Many runners take on their courses in cute costumes while others go for the most outlandish. Check out this gallery of costumes from races around the world.

Yes, you can see costumes like these and more at the Insane Inflatable 5K at the Tuscaloosa Regional Airport on Saturday, April 2. Planning to run? Register now here.

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