Runners take part in the Color Run, known as the happiest 5km on the planet, in Reykjavik, Iceland, June 6, 2015. This was the first Color Run held in Iceland. (Xinhua/Huang Xiaonan)
Runners take part in the Color Run, known as the happiest 5km on the planet, in Reykjavik, Iceland, June 6, 2015. This was the first Color Run held in Iceland. (Xinhua/Huang Xiaonan)