Talk:Toaru Majutsu no Index Light Novel Volume 13/@comment-71.191.91.77-20131109211931/@comment-5230978-20131110220221

No, it isn't a  mistranslation, but reading carefully the translation says "He was over two kilometers from his target." and "It did not matter that Accelerator was over two kilometers away." so it could mean that "about 10 km" was the actual distance between Accel and the WB.