Recording hikes for 19 days without internet connection

Heading out to Nepal where we are told that internet will be non existent. We will be hiking for 19 days will my old Fenix 5 be able to store all these hikes or will it start to overwrite the early hikes before I get a chance to sync with my phone?

I plan to keep my watch charged with battery pack and portable solar panel.

  • To make sure there is enough space: before you leave, sync, make sure everything is visible in Connect, then delete all actiities on the watch (or do that via USB on a computer).

    The only data you may lose is fitness data such as all-day heart rate, sleep and steps because a limited amount of that is stored, the maximum was around 14 days for a Fenix 5 back when I used it, it may have changed.