Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. The Color Run is a five-kilometre race, held in cities across the U.S. and also worldwide, with the aim of promoting healthy living and to benefit a charity that organizers choose in each of the cities that the run visits. Participants are doused from head to toe in different colors at each kilometre. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

Participants take part in the Color Run near the Eiffel Tower in Paris April 19, 2015. (Photo by Benoit Tessier/Reuters)

People take part in the Color Run near the Eiffel Tower, in Paris, France, Sunday, April 19, 2015. The Color Run is a 5 kilometer (3.1 mile) running event where participants are covered in bright colored powder at each check station and is less about speed and more about enjoying a day with friends and family. (Photo by AP Photo/Binta)

People take part in the Color Run near the Eiffel Tower, in Paris, France, Sunday, April 19, 2015. (Photo by AP Photo/Binta)