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Love my Forerunner 305 and I use the HRM function. Two weekends ago I did a 20 mile hike, mostly around canals and generally flat with only a small hill involved, it said i burned about 2000 calaries which seemed about right as I'd hardly seen my hearbeat go above 105.
However this weekend I did another 20 mile hike, this time with 2800ft of steep hills, and every step was battling mud and i don't think my HR dropped below 130 at any point. It said I burned 2000 calories. At the very start of the walk I spent ten minutes climbing up a very steep hill (at least 45%) and it gave me calories burned of 35. Now I know my HR was similar to running during this time and would have expected to see 200 at least burned, similar to my old HRM which was an ALDI cheap job.
Does the Forerunner calculate calories burned using the HRM at all? Or is it all based on the distance travelled? My two similar lengh hikes at varying effort levels would say that it only takes distance into account.
Anyone know or how to make it use the HRM to calculate calories burned?