How Wide Is Asia? ~8,700 km from Turkey to Russia

The maximum east‑west width of Asia is approximately 8,700 kilometres (5,400 miles), measured from Cape Baba (Babakale) in Turkey (26° E) to Cape Dezhnev (Mys Dezhneva) in Russia (169° W).

This immense span covers 11 time zones and encompasses deserts, mountains, taiga, and tropical coasts.