@Fripp You can check this problem with a simple search on the forum https://forum.suunto.com/search?term=s3f ascent&in=titlesposts Please, always try to use the search function as most of the issues were already discussed. As you can see this was an old solved issue. Which app version do you have ? Which kind of activities do you record ? Because, as a non Baro watch, s3f has a 7 meters threshold to calculate ascent I’m closing this one to avoid duplicates, please use one of the existing discussions to reply.