Bicycling has until now not been much of an issue in Spitsbergen, as the terrain is simply not very suitable for it. This may change to some degree now: “FatBikes” have wheels thick enough to be used on snow unless it is too soft. The law is clear: vehicles may be used only on roads and on frozen, snow-covered ground. New tracks and erosion of vulnerable tundra are accordingly not a problem as long as these regulations are followed.
Since August, there is an operator in Longearbyen called FatBike Spitsbergen. The small company offers FatBike excursions in the vicinity of Longyearbyen. This is an interesting addition to the existing range of organized tours, as it covers a part of the year where offers are otherwise quite thin. The early polar night, which is starting now, is actually an attractive time to visit Svalbard: Longyearbyen is calm and far less crowed with visitors than during the season. Accommodation is accordingly easy to get and comparatively (!) affordable. It is just the range of activities that is less comprehensive than in spring or summer. Now, there is another offer available for those who want to get out.
During the snow-free season, also normal bicycles are actually quite useful on the roads. If you walk, then they are actually quite long. With a bicycle, attractive areas such as Bjørndalen and Adventdalen are suddenly much more accessible.
FatBikes Spitsbergen offers excursions guided in English, Norwegian and German.