Group 1 - The World Iron Kids International Children's Marathon will take place in Wuhan on May 4, 2025, with registration currently open until April 29 [1][3] - The event has received strong support from the local Science and Technology Innovation Bureau, featuring two humanoid robots as volunteers and two ponies to lead the young participants [3] - The World Iron Kids Marathon is a unique event in China with independent intellectual property rights, having been established in Wuhan in 2019 and hosting multiple events since then [3][5] Group 2 - The marathon will include three race categories: a full marathon of 4219 meters, a half marathon of 2109 meters, and a 666-meter introductory run [5] - Participants will receive a value package that includes a chance to interact with robots, take photos with ponies, and enjoy various treats, including a pumpkin cake and a horse riding experience voucher [5] - The event aims to promote children's sports and technology collaboration, with plans to attract international participants and develop a super educational tourism industry in Hubei [3][5]