Pedometer Challenge, April 1: 13,014 steps. Below is a link for Plank Tic-Tac-Toe, which may be very challenging for some(including me). A few years ago, we had a very competitive Ozone teacher who competed with students to see who could maintain a plank the longest. If you don’t want to walk in the rain for the next few days, you may work on your plank time. The world record is for longest plank time is 8 hours and 15 minutes according to Guinness World Records.