I think far too much emphasis is put on power and searchlight like beams for night running headtorches. In reality, while running in the woods and hills at night, 99% of the time you are looking to light up the ground 5 to 10 feet in front of you. Having 5 zillion lumens isn't really necessary
. Also high beam power in hill fog can be completely useless as all of the beam is just rebounded back at you. And, worst of all, if you're running at night with somebody else following you with that person wearing a super duper search light on their head, your own field of vision, regardless of your own beam, is cast into shadow.
I have had the same headtorch for 3 or so years now, a
Fenix HP11 , and run with it on the (one from top) 133 lumen setting which tends to give me roughly two to three weeks worth of mid week headtorch running before I need to replace the batteries. Its relatively light, having a small battery pack positioned at the back of my head, and has thus far proved to be really tough and resilient. I don't think they sell this model nowadays but it only cost me £50 and by the looks of things Fenix offer
a whole raft of other headtorches in the same price bracket now