How Weighted Kilometers Work
In Sector, the group with the most kilometers rules a sector — but not every kilometer counts the same. To keep the map alive and reward groups that stay active, Sector ranks sectors by weighted kilometers, not raw kilometers.
Your raw km is the total distance you actually ran, and it never changes. Your weighted km is that same distance after a recency multiplier is applied: a fresh run counts in full, older runs count for less, and after 30 days a run stops counting altogether. Because a sector's ruler is decided by weighted km, staying active matters more than a big total from months ago.
In the Sector app, weighted distances appear with a small (w) marker — like 12 (w)km or 7 (w)mi — so you can always tell them apart from raw distance at a glance.
How recency changes a kilometer
Every activity falls into one of four age bands, based on when it started. The multiplier applied to its distance in each band:
Runs from the past week count in full — a 10 km run is worth 10 weighted km.
Into the second week, each kilometer is worth 0.7 of a kilometer.
From two weeks up to a month, kilometers count for just under a third.
Anything older than 30 days no longer counts toward a sector at all.
A worked example
Take a single 10 km run. Here's what it contributes to your group, depending on how long ago you ran it:
Prefer miles? It works exactly the same — only the unit changes. A 10 mi run is worth 10 weighted mi today, 7 weighted mi after 10 days, 3 weighted mi after 3 weeks, and 0 once it's past 30 days. The percentages are identical.
Why older activities fade
Without decay, a sector would freeze the moment one group banked a huge total — an active rival could never catch up. Weighting by recency keeps every sector contestable: it rewards groups that keep showing up, and it means the map reflects who's running now, not who ran the most months ago.
FAQ
Why did my group lose a sector even though we ran more?
Rankings use weighted km, not raw km. If your kilometers are mostly older than a week they're discounted, and past 30 days they're dropped entirely. A rival group with fewer but more recent kilometers can out-weight a larger but older total. Logging fresh activity is what defends a sector.
Do my old activities ever come back?
No. Once an activity passes 30 days it stops counting, and it doesn't return. Only your activity from the last 30 days contributes to a sector's standings.
How do I keep a sector my group holds?
Keep running it. Because recent kilometers are weighted highest, a steady trickle of fresh activity defends a sector far better than one big push that slowly decays away.