Participants are covered by colored powder as they compete in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. Approximately 7,000 participants took part in Hanoi's first Color Run, reported local media. (Photo by Reuters/Kham)





A participant is covered by colored powder as he competes in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Participants are covered by colored powder as they compete in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Participants are covered by colored powder as they compete in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Participants are covered by colored powder as they compete in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Participants are covered by colored powder as they compete in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





A participant is covered by colored powder as she competes in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





A participant covered in colored powder takes a selfie while he competes in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Participants are covered by colored powder as they compete in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





A journalist takes pictures at an event in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Participants are covered by colored powder as they compete in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Participants are covered by colored powder as they compete in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Participants covered by colored powder gesture as they compete in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Women are covered by colored powder as they prepare to take part in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Participants are covered in colored powder as they warm up before The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)





Participants are covered in colored powder as they prepare to compete in The Color Run, a five-kilometre untimed race, in Hanoi, Vietnam September 26, 2015. (Photo by Reuters/Kham)