How far west did Norse voyages of the Viking age reach?
To Iceland only, and no further west than that.
To Iceland and Greenland, with a brief landfall on the North American coast.✓Bonne réponse
To Iceland and Greenland, and on to lasting Norse colonies across North America.
To the Caribbean islands, several centuries before any other European voyages.
Explication
Norse settlement took firm hold on the north Atlantic islands, and a short-lived camp excavated on the North American coast shows that crews did cross the last stretch of ocean, though nothing permanent grew from it. The version with lasting American colonies is the overreach to avoid, because it stretches one small and brief site into a colonial presence that the evidence does not support.