KTO's Durunubi maps the Sinan section of the Seohaerang Trail to courses 26~30, emphasizing islands and sea in a slow-travel landscape. The courses do not all share the same distance or difficulty.
[Local planning] Check whether your chosen section requires a bridge, ferry or local bus.
Check the official detailed map for the exact start, end, distance, difficulty and route. Verify tides, restrictions, accommodation, facilities and local transit separately.