The catch-all, and what ends up in it

Our categories are verb pairs, and verb pairs only work for sports people actually say as verbs. You ride, you run, you ski, you paddle. Nobody says "triathlon it", and nobody is going to start.

So there is a dashed tile at the end of the grid that absorbs everything else, and it is not a consolation prize. Some of the best files we see arrive through it.

What actually turns up

Coastal rowing, which produces tracks very like sailing but without the tacking. Horse riding, which follows bridleways and therefore draws a great deal like trail running. Hyrox and obstacle events, which are mostly unprintable scribble in a field and occasionally, when the course loops a whole town, extraordinary.

And the largest group by some distance: things that were not sport at first. A walk that turned into a day. A commute somebody kept recording for a year. A route learnt during a period of their life that mattered for reasons that have nothing to do with fitness.

The only real requirement

GPS points. That is the whole test.

If the file has positions, we can draw it, whatever the activity was labelled as. If it does not — an indoor session, a pool swim, a strength block — there is no line, and we will say so rather than sell you a rectangle.

Why the tile is dashed

Because it is a boundary, not a category. Everything in it is waiting to become its own pair the moment enough people bring the same thing. Rowing may well get one. So might bikepacking, which is currently the most common thing arriving with no home of its own.

Until then: you did it, and it has a shape. That is enough.