With running, your feet and legs have to take a fairly sharp impact at every step. You don't get that while bicycling. Apart from that there's not much difference. If you push equally hard for equally long you get the same exercise.
The event is known as the Ironman Triathlon.
Kilometers are shorter, if that's easier.
It so much depends on how fast you run and how fast you swim and what type of stroke, and your weight. But roughly, say you run a 10 minute mile you burn 100 calories; say you swim 12 laps (300 meters) in 10 minutes you burn about the same 100 calories. A mile is 1600 meters, so a mile swim is a about a 5 mile run. Or 12 laps is about a mile run
A long distance race is any running event on the track that is longer than 3000m. This includes such events as the 3000m run, the 3000m steeplechase, the 3200m run, the two mile run, the three mile run, 5000m run, five mile run, six mile run, and 10000m run, and so on.
Because the bike can roll along, meaning you can spend all effort on going forward as opposed to having to work to remain upright.
Michael Johnson could run 400m (about a few meters shorter that a quarter mile) faster than anyone else.
Practice and training. The record for a mile is less than 4 minutes, so half a mile should be easy.
Yes, it will make you run half a mile a lot faster. If you can do 3 miles then you can run a half mile much faster than before.
There are four quarters in a mile run.
If I can run a 4.42 mile what do think I should run in the two mile
quarter horses have been clocked at 55mph (88.5k) in the quarter mile.
there are 36 muscles in a run mile