"Eu caminho na direção dela."

Translation: I walk towards her.

[IvanVencato]

Notice that:
"towards her" -> "em direção a ela"
"in her direction" -> "na direção dela"

[damarx]

I think "em direção a ela" e "na direção dela", in practice, have the same meaning in Brazilian Portuguese. Duo should consider them equally right in both cases.

[flemmilu]

Why is "I hike in her direction" wrong? surely caminhar is to hike as well as walk. As in a hike being an extended walk through field or forest?

[Ron576238]

Very differnt things.
You HIKE along a trail, in the mountains or along the riverside.
You WALK across the street, along the sidewalk or across the floor.