That is not true and the data in this article is bogus.

Using the article's data - US rail network is slightly longer, by about 20,000 km when compared to European Union. In this case it's 200,161 km vs 360,000 km. But the World Bank estimates the US rail system at 150K km.

But EU is not Europe. Countries that are not in EU are Ukraine, Russia, Norway, Switzerland, Armenia, Azerbaijan, Belarus, Kazakhstan [ (European parts), UK and a few Balkan countries.

I'm too lazy to do the research on all those individual countries, but nah, clearly not twice as long as in Europe.