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If you run a marathon every day, it “only” takes 25 years.

That will become the next “corporate team building”

2022: No more commutes but need to run 26 miles a day!

On a bike that's very doable though - if you wanted to do it 10 years you'd need to ride ~105k a day, which doesn't sound completely crazy.

The moon is very far away!

For every foot your girlfriend climbs, she would need to do 1km to get to the moon in a year... Although in space you wouldnt be fighting gravity.

To get farther away from earth you have to work against gravity.

Technically it's slightly lower surprisingly early in the trip -- get to an altitiude of 500km and g is down to about 8.5m/s, at 2000km it's 5.7, and by the time you get just 1/10th of the way it's pretty much gone. At some point the moon's gravity will start to work with you and pull you in.

According to Wikipedia [1], Gordon Pirie ran 347,600 km in the 40 years to 1981. He lived another 10 years after that, so he might have come close. The distance to the moon is 384,400 km.

[1] https://en.m.wikipedia.org/wiki/Gordon_Pirie