The Silk Road was about 6,500 kilometers long.

丝绸之路大约有6500公里长。

youdao

It's about 200 kilometers long and 240 kilometers wide.

它大约200公里长，240公里宽。

youdao

It was about 6, 500 kilometers long and went across one fourth of the planet.

它大约有6500公里长，覆盖了地球的四分之一。

youdao

In some cases, the resulting paths of damage can stretch more than a kilometer wide and eighty kilometers long.

VOA: special.2010.05.11

And they had to defend a line almost sixty kilometers long, from Richmond to the city of Petersburg.

VOA: special.2009.12.17

The roads are good, a driver can see far -- and a trip hundreds of kilometers long can take just a few hours.

VOA: special.2010.04.26

Companies that make systems to transport and decode data along metropolitan networks up to 100 kilometers long.

FORBES: Young guns...

Over the ocean, where there is no radar to warn of impending collisions, safety rules require a plane to occupy a slice of sky 160 kilometers long and 300 meters thick, severely limiting traffic.

FORBES: Technology

For example, Plato said Atlantis was larger than Libya and Asia combined, whereas Spartel was only 14 kilometers (8.75 miles) long by five km wide (three miles) at the time.

BBC: Atlantis 'obviously near Gibraltar'