However, to some degree, I agree with Bolster. This is a full flood light, and the properties of such lights have been discussed in this thread many times. If you ask about throw, that pretty much tells already, that you are looking at a wrong light. The light illuminates almost everything you see, and the center is only very slightly brighter than the periphery.
It might illuminate objects at 15 meters. However, at the same time the land 5 meters from you will be ~10 times brighter. Leaves and branches (and possibly the land, too) at 2 meters from you will be tens of times brighter, also in the periphery of your vision. If you want to see the trail clearly, you should consider the different H51F (or H51) models instead. The difference will be significant.