我愿与你走向世界的尽头转换为英文，

I wish to be with you, till the end of the world

I'm willing to go with you until the end of the world.

I wish to walk to the end of the world with you.

希望对你有帮助~

I'm willing to walk with you to the end of the world.
-direct translation

I'm willing to accompany you to the end of the world.
-this is a more poetic way to express it

愿-willing
希望, 想要, 愿望, 渴望 -wish

I'm willing to go to the end of the world with you.