Most people in a mountain run - multiple mountains
According to Official Guinness Records,
The largest number of people climbing mountains at the same time took place during the Atunas Formosa 100 Hiking on 2 October 2011, when 6,136 people simultaneously climbed 10 different mountains across Taiwan.List of mountains:1. Beitou District in Taipei city at Mountain Chihsing = 1,149 participants2. Sijhih District in New Taipei City at Mountain Dajian = 731 participants3. Bali District in New Taipei City at Mountain Guanyin = 438 participants4. Tucheng District in New Taipei City at Mountain Tianshan = 751 participants5. Beitun District in Taichung City at Mountain Touko = 234 participants6. Shetou District in Changhua County at Mountain Hangshan = 323 participants7. Jiji District in Nantou County at Mountain Jiji = 732 participants8. Dongshan District in Tainan City at Mountain Kantou = 377 participants9. Shihzih Township in Pingtung County at Mountain Lilong = 317 participants10. Gushan District in Kaohsiung City at Mountain Shaishan = 401 participants