Where you can snowmobile in Iceland
Almost all of Iceland's snowmobiling takes place on Langjökull, the long ice cap in the western highlands north of the Golden Circle. It is high, broad and reliably snow-covered, which is why tours run there in every season including midsummer. Bases sit near Geysir and Gullfoss, both around an hour and a half to two hours from Reykjavik.
You never drive to the snow yourself. A super jeep or a purpose-built glacier truck carries the group from the base up onto the ice cap, and the snowmobiles wait there. That transfer is a decent chunk of the tour time, so a four-hour trip usually means about an hour on a machine.
What a snowmobile tour actually involves
Two people share each snowmobile as standard and swap driver and passenger part-way through; a solo machine costs extra and a valid driving licence is required to drive. Operators supply the overall, helmet, balaclava and gloves, so the main thing to bring is warm layers underneath and something waterproof.
Riding is guided and single file, following the lead guide's track across the ice. Reviewers of the Gullfoss departure in particular describe a steady rather than fast pace and larger groups, which is worth knowing if you are picturing an open throttle.
Snowmobiling and the ice cave are different tours
This is the point most worth being clear about. The Langjökull ice cave — Into the Glacier — is a man-made tunnel bored into the same ice cap, but the snowmobile tours listed here do not go inside it, and the ice cave tours do not include snowmobiling. They are sold separately by different operators.
Some visitors do both in one trip, since the bases are within reach of each other, and a handful of operators sell a combined day. If the cave is the priority rather than the riding, book an Into the Glacier tour directly and treat the snowmobile as an extra.
When to go, and what it costs
Snowmobiling runs year-round. Winter brings snow-covered scenery and a chance of northern lights on the drive back; summer offers long daylight and easier road conditions on the way to the base.
Expect roughly $255 to $267 per person for a standalone ride from Gullfoss or Geysir. The full-day trip that adds hotel pickup, meals and the Secret Lagoon runs closer to $441. Ice cave tours on the same glacier start around $194.