The ocean or sea
The sea. "Swan road" is a poetic term used in Old English literature to describe the water surface, as swans were believed to travel gracefully across the water.
National road
blackness of night
The kenning "sail road" in Beowulf most likely refers to the sea or ocean. It is a poetic way of describing the water as a road or path that ships travel on using sails.
Road
sales person
"The Road Through Wonderland"
street, path, ect...carriageway
Skidded?
Another Journey
A byroad is another name for a byway - a road less frequently travelled.
There isn't a name for it in the book. Besides, they don't make a big deal of traveling on a specific road.