At Hovedlandsrennet in Beitostølen he won the silver medal in relay with Jarle Midtfjell Gørven, Runar Netland, and Johan Eirik Meland.
In January/February 2013 during the Junior World Championship in Obertilliach, Austria, Thingnes Bø won the silver medal in sprint, gold in the 12.5 km pursuit, and gold in the 7.5 km relay.