Ondas started for the first time in January 1999 in a race organized by the FIS in the low-class Continental Cup. The following winter, at the age of 19, he took part in the Junior World Championship in Štrbské Pleso , where he finished twelfth in the 30-kilometer race in the classic style, leaving behind the eventual world champion Johan Olsson, among others . After further good results in the Continental Cup, he was nominated for the World Cup for the first time in October 2002 : In the sprint in Düsseldorf , however, he was 46th and missed World Cup points. In the course of the 2002/03 season , Onda initially succeeded in winning the bronze medal over the sprint distance at the Winter Universiade in Tarvisio , before taking part in the World Championships in Val di Fiemme at the end of the season, finishing 18th on the same route . He also secured his first World Cup points in Oslo in March 2003 and shortly afterwards reached the top ten in the top competition class for the first time in Drammen - over the sprint distance.
Over the following winters, Onda managed to place himself in the top 30 points in many sprint world cup races, but he did not manage to reach the absolute top of the world. In January 2006, he took seventh place in Otepää, Estonia - his best World Cup result to date. At the subsequent Olympic Winter Games in Turin , he represented his country as one of nine cross-country skiers and came in 26th in the individual sprint and 12th in the team sprint with his partner Katsuhito Ebisawa . Another career highlight followed for the Japanese in March 2007 when he first won qualification for the sprint in Kuusamo and then reached the A-final of the top six for the first time in his career. There he only had to admit defeat to a Norwegian trio led by Petter Northug and in fourth just barely missed the podium. A similar situation arose two years later when he finished fourth in Trondheim for the second time, again behind three Norwegians, this time led by Ola Vigen Hattestad . To this day (as of November 2013) these two fourth places are Onda's best World Cup results and also the best results that a Japanese could ever achieve in the Cross-Country World Cup. Overall, he managed to get into the top ten ten times in individual races.
From 2007 to 2013 Onda took part in every edition of the world championship, the best results here are two tenth places, which he achieved in 2007 and 2009 in the team sprint with Osamu Yamagishi and Shōhei Honda . In addition, he reached 17th place in the individual sprint in his second Olympic participation in 2010 . Another success was the victory at the Winter Asian Games 2007 , where he defeated the Kazakhs Alexei Poltoranin in the sprint . Four years later, Poltoranin triumphed while Onda won the bronze medal.
Japan
