My EDGE 840 always records my rides as 100% Paved in the Road Surface portion of the FIT file.
I always ride a mix of paved and unpaved, but since I've had the device (Feb 2025) it's never gotten this metric correct with the Gravel profile. With the Mountain profile, its mostly unpaved biased but often similar routes can be 20% paved 80% Unpaved one day and 3% paved 97% Unpaved the next. ¯\_(ツ)_/¯
Am I doing something wrong or did I overlook some map function? Or is Garmin just being Garmin, adding features that just don't work properly?