The test events for the 2020 Tokyo Olympics and Paralympics started in full swing on Thursday as the Pentathlon World Cup Final opened as the games' first official dress rehearsal of the year.

The four-day modern pentathlon competition opened at Tokyo's Musashino Forest Sport Plaza, also one of the sports' venues at the Olympics next year. More than 70 athletes from over 20 countries will compete here to get a feel for next summer's setup and competition.

In principal, the test events are held at Olympic and Paralympic venues in a bid to check and improve operations by checking equipment and holding staff training. In addition to the sailing and water polo tests organized last year, a total of 56 events will be held through next May.