The 22nd Life Time Miami Marathon and Half is upon us, and it’s about to shut down the city streets this weekend. While Sunday is the main event drawing in 18,000 runners, preparations have been rolling for much longer than just a few days. According to NBC Miami, Frankie Ruiz, the race co-founder, clarified that athletes don’t just decide to run a marathon overnight. “Some of these folks have been training their whole lives to do that race that day,” said Ruiz. “Some training programs start 16 weeks out. Some start a full year out.”