13 letter words that start with THR aren't so tough to find when you have WordList Finder by your side. Seems like a very specific word list you're building, here. Take a look at how these 13 letter words and words that start with THR can maybe inspire a different list. You may also want to check out 13 letter words with THR and 13 letter words that end in THR, in case that's your next endeavor.
13 letter words