[btilly]

Correction. Kyiv is about 380 km from the Russian border. You're thinking of the Belarusian border. But Belarus and Russia are not (yet) one country.

[_kbh_]

That’s a fair point, but given they invaded via Belarus the original point stands (albeit corrected).

[btilly]

True. But their logistics were also stretched, and sabotage of railroads by Belarusian railway workers stretched it even farther.

This compounded the general fact that logistical troubles are one of the great weaknesses of the Russian military machine.