Many of you have two pairs of runners, one for the cold, one for warm snow, and swap them with the trail. Until now, MushMate only saw the sled: the runners' wear was mixed up with its own, a sled service reset everything, and nothing said which pair was mounted when.

What changes

What others see, and what never leaves the kennel

Pairs, their mounts and their kilometres are read by your kennel's members, in Equipment. Mounting, changing a pair and correcting the day of a change: the owner and handlers. None of it goes to the club, a public page or a share card.

What it does not do

Three choices made against the obvious

An item, not a counter on the sled. A "runners" counter on the sled's page would have been simpler. It doesn't survive the first swap with the snow: it wouldn't know whom to give the kilometres to. A pair with its own page, mounts and limit does.

The day of the change goes to the new pair. You swap runners in the morning, before leaving. Splitting that day's run between two pairs would be wrong; giving it to the old one too.

Two changes on the same day leave an empty period. If you mount a pair and then change your mind the same day, the history keeps a zero-day period rather than erasing it. The phone writes offline, in the order you acted; a deletion could arrive after the next change and take the wrong one with it.