Is this sentence grammatically correct? (calling all grammar geeks!)

I’m in the process of writing, and I just had a brain fart, so I’m in need of assistance. Is this sentence grammatically correct: “We are examining the rapid pace at which progressives are traveling in order to fight for gay rights.” The “at which” part looks a little out of place.

The help is appreciated. And please don’t make this political. This is just an example sentence, and I want to make sure it’s correct. Thank you, everyone!