Another event in Assen yesterday was the Winter Triathlon.
There were about a thousand competitors, either as individuals or in teams for a "relay". Most people took part in a 10 km run, a 50 km cycle ride and 20 km on ice skates, but there were also sprint events where the distances were halved. Ages ranged from 20s to 70s.
I'm a hopeless runner and can't skate, so triathlon isn't really my thing, but I went to watch for a bit.
The cycling and running events involved the police being out in force closing roads.
It seems relatively easy to get road closures here compared with back in the UK.
Cycle Parade through Amsterdam
39 minutes ago