Weather on your runs and plan

Runsei records the conditions you actually ran in (temperature, wind, humidity) on each run, and shows the forecast for your planned sessions around your usual training time. This is context, not just decoration: heat and wind cost pace and raise heart rate, so the coach factors them into how it reads a run — a high heart rate on a hot afternoon is a different story than on a cool morning, and it won't mistake weather for a fitness problem.

Where it looks. The forecast uses the place you usually run, which you set under your profile by typing a town or city. In the phone app you can instead tap Use my approximate location. Only when you tap, the phone is asked once for a position, which is rounded to about 11 km on the phone before the app sees it. Our own server then finds the nearest town on a list it keeps (the GeoNames list of towns over 15,000 people, licensed CC BY 4.0, filtered and reduced by us), so no other company sees the position, and what Runsei saves is that town's name and its height above sea level. The label says Nearest town, and it may also say how far away that town is. It is a nearby town, not your street, and it is never tracked in the background. If no town on the list is near you, or you decline, type a town instead.