As a guess, about a foot. Some glaciers that are closer to being flat may move less than that. Some glaciers that are steeper naturally move faster.
There is a glacier in the bay near Tierro del Fuego (just north of Antarctica) that is moving many yards in a year, or more. This is the result of it being more cold at the glacier's top resulting in more ice buildup from rain/snow.
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Glaciers move very slowly as the ice in front of the glacier melts. Glaciers can move at about 0.3 miles per hour at their fastest speed.
Under the glacier the ice is cracking and melting and then ice (glacier) floats away and might freeze on other glaciers that are not floating and are stuck
The distance a meteorite travels in a year can vary greatly depending on its starting point and trajectory. On average, meteorites in our solar system can travel anywhere from a few kilometers to millions of kilometers in a year.
About 9.45 trillion kilometers (5.88 trillion miles) per year if you mean how far can light (including the sun's light) travel in a year. 365 days/year * 86,400 seconds/day * 299,792 km/s = 9.45 x 10^12 km/year
It is the distance travelled by light in one year at a speed of 186,000 miles per second
The Lambert Glacier in Antarctica is 100 km wide, and about 400 km long.The Beardmore Glacier is 160 km long before it enters the Ross ice Shelf, and becomes indistinguishable from that, though it is still probably sitting on bed rock.Even bigger in area, are the various ice plateaus and ice shelves, but these are not moving fast enough to be considered glaciers.
The time it takes to travel from Mars to Venus depends on their positions in their respective orbits. On average, it would take several months to a year using current space travel technology for a spacecraft to make the journey. However, no direct mission from Mars to Venus has been conducted so far.