The rest of the events can be viewed here:
https://en.sports.nhk.or.jp/olympic/sports/cycling/
As mentioned in a previous post, sounds like you need to use a location spoofing browser like Tor to use that site, with your location set to Japan in the browser settings.
On the left side of that page, if you click on Men's or Women's, a list of events opens up. Then click the one that interests you to go to a page with a full video of the event.