Sadly there is no Horseriding activity on my Garmin 945? I use the watch for long-distance training and competition (Endurance races). A training is often around 30km, a competition (for me) is between 40km and 100km. For my health stats & analysis, the watch of course does not understand this correctly... I am certainly exerting myself, average heartrate is at 135 during 3 hours for instance -- but proud as I may be at the end of the day, I have not personally run the distance, the horse really has done most of the work. So sadly my Garmin does not I think correctly calculate the influence for my health. Just as 40 km running is not the same as 40 km cycling, so 40 km horseriding should have its own category.
I know there are Horseriding apps in the store, but I don't think they fix the problem above?