How many days worth of data will a Fenix 5X store without syncing?

I'm going on a multi-day backpacking trip. I love to track my hikes with my Fenix 5X, that was the primary purpose when I bought it. Sometimes I'm out in the back country with no internet connectivity but I haven't done more than 2 nights in with the Fenix yet. I usually just turn it on when we start hiking, I might pause it for our breaks and restart when we restart but it's usually in use for the day tracking my hike. I know the battery life will go down and I may need to recharge but I'm curious how many days of hiking it can store as I'm expecting 6 nights without internet access.