Justin Mottier

In 2016, Mottier joined VC Pays de Loudéac, with the goal of eventually moving into the professional ranks.[8] He had a successful season, notably winning the Circuit du Morbihan, La Castelbriantaise and the first stage of the Boucle de l'Artois.[1] He was then selected to ride for the national team in the Grand Prix de Plumelec-Morbihan, where he placed 91st. In August, he was offered to ride for UCI Professional Continental team Fortuneo–Vital Concept as a stagiaire.[4] While riding with the team, Mottier competed in the Tour of Utah and several one-day races in Belgium, including the Grote Prijs Jef Scherens.[9] For the 2017 season, Mottier stayed with VC Pays de Loudéac, most notably placing second overall in the Tour de Normandie.[2]

In August 2017, he signed a professional contract for the following season with Vital Concept at the age of 24.[10] Mottier was one of two riders on the team from the Mayenne department, alongside Arnaud Courteille.[11] His first race with the team was the Grand Prix La Marseillaisein late January. In early March, he placed third in the Route Adélie after remaining in the breakaway for 200 kilometers. Two weeks later, he entered his first World Tour events, taking part in the Amstel Gold Race followed by the La Flèche Wallonne.

Mottier had a less successful second season as a professional, with his best result being 18th in the Circuit de Wallonie. Despite this, he remained with the team for a third season in 2020. After falling ill and suffering a fractured collarbone while training in December 2019, Mottier only competed in three races before the Covid-19 pandemic, including the Tour de Langkawi.[11][12] He returned to racing in August at the Mont Ventoux Dénivelé Challenge, followed by several more races throughout France. However, he lacked success once again and was this time not kept by his team.[13]

After he was not retained by B&B Hotels–Vital Concept, following three years with the team, Mottier announced that he was leaving professional cycling following the 2020 season.[14][15] In November 2020, it was announced that he would join French amateur team Laval Cyclisme 53, for the 2021 season.[3][16][17]