📍Getting there. Quick flights from Seoul or Busan to Jeju (CJU).
⛰️Terrain. A flat-ish 234km coastal bikeway plus Hallasan climbs.
🌤️Climate. Temperate island — humid summers (typhoons in Aug), windy winters.
💶Currency & language. South Korean won (₩) · Korean
💡Local tip. Ride clockwise for the prevailing wind, and collect the path stamps.