I think if you drive just the Bergen-Voss-Nordheimsund-Bergen circuit (some 200km?) that alone is 60 tunnels, and many of them are longer than what most countries have.
A few years ago I counted 42 tunnels on 100 km between Voss and Bergen center.
A few years ago I counted 42 tunnels on 100 km between Voss and Bergen center.