A very well organized event in my backyard, in which I participated last year as well.
It’s a big event too: last year, there where some 420 individual participants and 68 teams (of 4).
There are three individual distances, a hand-bike time trial and a team time trial.
There’s a 5.5 kilometer kid’s TT for boys and girls, and the (more or less) grown ups can chose between 21 and 42 kilometers; the team time trial is 21 kilometers.
Besides the kids, participants are split into various categories: junior, senior and masters, although the juniors cannot participate in the long distance.