Record-breaking attendance at First Day Hikes in Iowa state parks 1/3/2020 4:39:00 PM View Count 3150 DES MOINES – At least 4,358 hikers took part in First Day Hikes yesterday in 49 Iowa state parks, the highest attendance since the annual event began in 2012. The New Year’s Day hikes launched the Iowa state park centennial in 2020.