[4] Suzuki competed at the 2009 Asian Youth Para Games, whilst at middle school.

[5] At the 2017 World Para Athletics Championships in London, Suzuki, Sho Watanabe, Yuki Nishi, and Hitoshi Matsunaga won the 4 × 400 metres relay T53/T54 race, by virtue of being the only finishers.

[9] Suzuki came third at the 2019 London Marathon, after breaking away from the main group alongside Daniel Romanchuk and Marcel Hug halfway through the race.

[2][3] Suzuki won the 2020 Tokyo Marathon, after forming an early group with Hiroki Nishida and Sho Watanabe, and then taking the lead 8 kilometres (5.0 mi) into the race.

[11] In December 2020, Suzuki was third in the Runner's World magazine World Para Male Athlete of the Year award, behind 2020 London Marathon winner Brent Lakatos, and David Weir, who came second at the 2020 London Marathon, and won the 400 metres event at the 2020 British Championships.

[17] He was part of the Japanese team that came second in their mixed 4 × 100 metres relay heat,[18] and came third in the final.