pyöräiltiin
Pyöräiltiin is the past tense plural form of the Finnish verb "pyöräillä," which means to cycle or to ride a bicycle. Therefore, "pyöräiltiin" translates to "we cycled," "they cycled," or "you (plural) cycled." It denotes an action of cycling that has already occurred and was performed by more than one person.
The context in which "pyöräiltiin" is used would specify who the subject of the cycling action was.