nō
nō only occurs with the preposition rā. rā NP nō means towards a location along a path. So rā jatōna is ‘to the road’ and rā jatōna nō is ‘along the road’.
rājanō
rājanō is rā NP nō without a specified location.
ñi liēn rājanō;
I went along [a path].