Learn Russian: Меня тошнило всю дорогу.

While many personal feelings and states in Russian use the dative (like мне грустно - I am sad), involuntary physical reactions often take the accusative. The verb тошнить is an impersonal verb that acts as an unseen force acting upon you. The sentence literally translates closer to "it nauseated me."

Why does the verb тошнило end in -о?

Because this is an impersonal sentence, there is no grammatical subject (no "he," "she," or "it" explicitly doing the action). When a past tense verb in Russian has no subject, it always takes the default neuter singular ending -о.

Why is всю дорогу in the accusative case here?

The accusative case is used here to express the duration of an action or state. In Russian, when you want to say an action lasted "for the whole [time/journey/week]," you put the phrase directly into the accusative case without needing a preposition.

Does всю дорогу just mean the physical road?

Literally it means "the whole road," but it functions as a highly common set phrase meaning "the whole way" or "the entire trip." It shifts the focus from the physical asphalt to the time spent traveling on it.