This freight train claims to be the longest ever. Here’s how long

South Africa claims it has sent the longest freight train in the world on a test runSaveCAPE TOWN, South Africa (AP) — A government-run company in South Africa says that it has sent the longest freight train ever on a test run.The train was 7.6 kilometers (4.7 miles) long and consisted of 696 freight wagons, according to Transnet, the state-run transport and logistics company.