My apps seem to imply I burn up to 1000 calories per hour when running, but speed and weight must affect that a lot. I am not too worried about losing weight, but I can use it as an excuse to have a treat.
Our pool is only about 5m long, but I still swim lengths of breast and backstroke. I consider that more of an arm workout than burning calories. It is very weather dependent as it is not heated.
I have not done much cycling lately, but would like to get out again soon. I may try that as a break from running after my current streak.