
Black Light Run —
Participants in these psychedelic 5K night races are covered in neon glow powder, which is illuminated by black lights spread across the routes. The runs are held in various U.S. cities.

Color Me Rad —
Another race that involves being doused in powder, Color Me Rad has become incredibly popular worldwide. The organization says more than two million runners have already taken part.

Hot Chocolate Runs —
Participants in this race, held throughout the United States, win chocolate bar-shaped medals. At the post-race party runners enjoy mugs of hot chocolate and chocolate fondue.

Zombie Evacuation —
Would knowing this pair is chasing you down improve your race time? That's the premise of Zombie Evacuation races, which take place throughout the UK.

Swissotel Vertical Marathon —
This is the easiest part of the annual Singapore race. Next stage: a run up 1,336 steps.

Superhero Scramble —
In these races held across the United States, participants tackle 6.5-, 13- or 21-kilometer courses filled with obstacles such as slime, nets and water.

Minnesota Monster Dash —
As the name suggests, runners are expected to dress up like monsters. Prizes are awarded for the best costumes. Participants can opt for the five-kilometer, 16-kilometer or half-marathon route.

Electric Run —
Held worldwide, these races features a five-kilometer course dotted with glowing trees, tunnels of light and UV lakes. Racers wear bright colors and glowing accessories.

Denver Gorilla Run —
In this annual race, thousands of gorilla suit-wearing humans run five kilometers around Denver's city center to raise funds for the Mountain Gorilla Conservation Fund.

National Trust Night Runs —
These regularly scheduled races allow runners to gain unique insight into some of the UK's most spectacular protected buildings.