Yes, it can be done. We have had some amazing weather on this trip. Could not have been better. Last week a nice morning run in South America, this week, a trail and beach run on Deception Island just off the coast of the Antarctic peninsula. We carefully packed our winter running gear and trail shoes to log a nice 5K among the penguins and birds.
It was a pleasant -1 degree Celsius with only a light wind to slow us down.
Unfortunately, running in the volcanic sand and rocks makes sub-7 minute miles challenging, so instead we had fun jumping over rocks, melting snow and small water flows.