Where?
If you google "Charting Outcomes in the Match" you will find that many people are matching into this field with below-average Step 1 scores. Although it is supposedly "getting more competitive" (and from what I hear, so is every other specialty 😕), there are 1000+ spots out there and the competition is not that fierce.
As for the most competitive programs, you will want an above-average score. At Stanford this year they said the average interviewee had a 237.