Set a turn-back point before you start. The full Gyeongpo Lake promenade is about 4 kilometres, while an out-and-back lets you shorten the walk without committing to a complete loop.
Choose the shoreline section first
Start from the access point nearest your arrival stop or parking. Follow the lake edge only as far as the group wants to walk, then retrace the same section. The wetland observation paths add a separate stop; do not count them as part of the 4-kilometre lakeside figure.
Use conditions to set the return point
Summer heat, winter wind and shorter daylight can change how far a comfortable walk feels. Decide where to turn around before adding the wetland, beach or a cultural site. Gyeongpo Beach and nearby heritage stops need their own time and transfer allowance.
Plan the final leg before extending the route
If cycling, confirm where a bicycle can be rented and returned before you leave. For a bus trip, include the walk between the stop and the lakeside path, then check the return service for that stop and day in the official Gangneung bus timetable. The Gyeongpo Lake overview compares the full circuit, wetland and nearby cultural options; city bus information provides the transport reference.