Can anyone kindly translate the venues please

especially this one
2013年7月27日(土) 国立代々木競技場第一体育館 17:30/18:30
isn't the tour dates so short compared to her other tours? usually they last till fall right?
probably on 4/8 she's gonna do something big as well, and looking at her concert title, my guess is... A BEST 3 ?