Can you camp in Big Sur without a reservation?

No, you're unlikely to find camping in Big Sur without a reservation. Big Sur campgrounds are wildly popular and fill up quickly, with most reservations being made months in advance. For the best chance at a last-minute Big Sur campsite, arrive early for backcountry camping in Los Padres National Forest or book a Hipcamp tent site, RV campsite, glamping site, or cabin.