Questions & Answers about Когда урок закончится, я пойду домой пешком.
Russian works differently here.
After когда, Russian normally uses a real future form if the action is future:
- Когда урок закончится, я пойду домой.
So this literally looks like When the lesson will end, I will go home, but that is exactly how Russian expresses it.
A very important point:
- закончится is the future of the perfective verb закончиться
- perfective future often means will be completed / will come to an end
So in Russian, this is the normal way to say when the lesson is over / when the lesson ends.