My favorite place outside of Seoul – Eulwangri Beach, just near the Incheon International Airport. It’s about a 1 hour drive, or 1.5 hours by public transportation from Hongdae or other hotspots of Seoul. Eulwangri is not the most exciting beach, but just the fact that a beach is this close to the city, and also the diverse street food and fresh seafood you can get from there makes it my favorite place. You can swim, suntan, fish and find little local shops that give off a very down to earth local vibe. It’s more of a locals place than a touristy one.
You can check out where it is here: https://english.visitkorea.or.kr/enu/ATR/SI_EN_3_1_1_1.jsp?cid=264514
Yes, I’m answering my own question.
I love Eulwangri beach as well 🙂