Its on average around 0.5m/day, but could be up to 1m/day. Gravity is too strong force, and they are not tightly bonded to bedrock. I would expect that in hard

Its on average around 0.5m/day, but could be up to 1m/day. Gravity is too strong force, and they are not tightly bonded to bedrock. I would expect that in hard winter they move much less but still some. That's how they keep discovering dead alpinists (more like parts of them, ie Reinhold Messner's brother Gunther on Nanga Parbat who died there in 1970, I think it was piece of femur bone and shoe) in Alps and Himalaya, everything that falls down on glacier or into crevasse eventually ends up at the snout of glacier (or river flowing from it). Their overall accelerated melting due to climate change just accelerates all this since glaciers retreat higher and higher.