The top section got muddy in winter, but it's now sealed, making this 15km trail from Ohakune Station to Horopito a true year-round ride.
If you don't have your own bike, it's easy to hire one to explore the countless trails around the mountain.
But even if you're not into skiing or cycling, the grandeur of walking tracks makes the four-hour drive from Auckland well worth it.
In the 1930s, this was the scenery which inspired John Mulgan's great New Zealand novel, Man Alone.
The marvellous Ruapehu rocks and crags haven't changed since then, or in the past few thousand years.
Active types will have no trouble amusing themselves.
They can even paddleboard year-round on Lake Otamangakau, a relatively warm, shallow lake compared to Taupo, and just 25 minutes drive from National Park Village.
Beyond all hoopla for the young and active, Ruapehu offers Aucklanders rare tranquillity and solitude.
There's nowhere better to merely stare out the window and think.