...sp;(Ⅰ) Age requirements1. Marathon, aged above 20 (born before Dec. 31, 1999);2. Half Marathon, aged above 18 (born before Dec. 31, 2001);3. Mini Marathon, aged above 3 (born before Dec. 31, 2016);Cautions: With regard to minors (less than 18 years old) who sign up for the race, the participants a...