Another event seen in Marble League 2016, the Relay Race is all about team work. Unlike last season, the marbles are in tracks next to each other as they race. One marble from each team rolls down part of the track as quickly as they can. They then crash into the next marble setting them off to complete their part of the race. The fourth marble in the team will complete the final part of the course. The first two marbles to cross the finish line advance to the next round.
In Semifinal B, the Pinkies were ahead going into the last exchange, but Team Momo had a great exchange and won the race.
In the same race, the Pinkies were almost overtaken by the Oceanics, who also had a good exchange. The finish between the two teams was incredibly close, with a photo finish needed to decide the outcome. The Pinkies just managed to hold on 2nd place with a margin of 0.01, sending them into the final. It was the closest race in Marble League 2017.
Despite Team Momo racing with heavy hearts after Momomomo's injury, they managed to claim 2nd place in the final, earning them the silver medal.