So here’s my take …
Running is one of the least efficient forms of transportation.
Cycling is perhaps THE most efficient forms of transportation.
Being very inefficient – Running burns a lot of calories.
Being efficient – cycling does not burn as many.
It’s easier to run harder than it is to ride harder on a bicycle.
It’s easier to ride easier than it is to run easier on a bicycle.
It’s warmer running in the cooler temperatures. (less wind-chill)
It’s easier cycling in warmer temperatures. (more wind chill)
Running is harder on more parts of the body.
Cycling is specifically harder on the crotch.
I have never been able to get used to the jarring of running – but it is getting better.
I’ve been able to get used to numerous saddles.
Running is easier to get ready for.
Cycling is ease to carry water with you.
Having EEE feet – running is easier to find shoes.
Running downhill sucks.
Nothing beats a 35 mph downhill left hand corner after a long climb.
Running events are fun and encouraging to beginners.
Cycling events are elitist and often annoying even to experienced riders.
Everybody gets a T-shirt at a running race.
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Running shoes are easier to walk in.
You aren’t supposed to walk in cycling shoes.
After a month of running, I don’t feel any faster. I can run farther, but I’m slower than a turtle.
After a month of cycling, i’m usually seeing a marked improvement in average speeds an comfort.
All that said… I’m actually enjoying running lately. I find running on a treadmill more tolerable than time on a trainer. Mentally, I ‘m just able to do it better – I don’t know why.