Can you please give me your opinion on which of the phrases suits the best. Can you also please check my prepositions and articles in the first part of the sentence.Thanks

By foot, on a motorcycle or on camel – it does not matter. What it counts is to reach the goal/achieve one's goal/It is important to reach the goal.
In this specific case, I would say: What counts is reaching the goal ["one's goal" sounds better if it's a goal unique to that particular individual].
Students: We have free audio pronunciation exercises.
Thank you Young Californian. CAn you please chek my articles? Should I put an article before camel?
If you put an article before "motorcycle", then you should also have one before "camel". However, stating "By foot, motorcycle, or camel..." is fine too.
Teachers: We supply a list of EFL job vacancies