What events are held at the Junior and U23 World Championships?

The following events are held:

JUNIOR MEN

10 km Interval Start
20 km Skiathlon (10km C + 10km F)
Sprint
4 x 5 km Relay (2 Classic / 2 Free)

JUNIOR WOMEN

5 km Interval Start
10 km Skiathlon (5km C + 5km F)
Sprint
4 x 3 km Relay (2 Classic / 2 Free)

U23 MEN

15 km Interval Start
30 km Skiathlon (15km C + 15km F)
Sprint

U23 WOMEN

10 km Interval Start
15 km Skiathlon (7.5km C + 7.5km F)
Sprint