Big Thunder Mountain at Disneyland Paris got 4 or 5... The last one is very long! You get in the tunnel on the backside of the mountain, drop under the water, blast through a turn and then go up near the station in the final brakes.
Marineland just love to stretch or "forget to update" the truth. Between putting 300 feet combo towers on a hill and then claiming they're 450 feet towers and the dubious claims about Dragon Mountain, I would not exactly trust them!
For steel, what I can come up with, is California Screamin with 4 tunnels I believe. Also, Adventure Express at KI has 4 tunnels. I can't think of any coasters with 5.
Lochness has 1 tunnel nd Beast I believe has 2 tunnels, but I have no clue how long because you fly through both of them too fast to tell.
My only other coaster that I can think of it, Space Mountain at Disney. Even though the entire coaster is enclosed, if you've ridden it, it definitely has tunnels in it. But haven't been in a while, though.
I'll flip it and mention that the world's longest enclosed coaster is the boring "Temple of the Night Hawk" at Phantasialand. 4200 feet long with 3 lifts! Surprisingly, Vekoma built it in the late 80's.