The bus we took. The UN-narrated shuttle buses are all green like this one. The NARRATED shuttle buses are light tan. All travel the same route. At this time of year, private vehicles can only go as far as Mile 15 inside the park, while shuttle buses can go to Mile 54. The only road into Denali goes to Mile 92, where they have a big Denali Lodge. Only if you have Lodge reservations can you go that far into the park, and only by bus.