Via Golchijae
- Official ascent distance
- 3.2 km
- Official ascent time
- 1h 40m
For the ridge approach. At Golchijae, follow Illimsan signs rather than continuing toward Sajasan or Jeamsan.
BOSEONG · JEOLLA
Illimsan hiking routes & maps
Boseong · compare three Yongchu Valley ascent options, find the trailhead and follow the numbered course guide.
Choose an ascent route
The county lists these distances from Yongchu Falls to the summit. They are one-way ascent figures, not parking-to-parking totals; the diagrams also show the parking approach. Allow extra time for access, descent, breaks and photographs.
Numbers match the county’s landmark map; they are not a 1–12 walking sequence. This diagram shows stop order, not geographic scale or a GPS track. Unnumbered peaks and junctions are named separately.
Via the water source
- Official ascent distance
- 3.2 km
- Official ascent time
- 1h 35m
Use the named junctions to distinguish the forest road from the summit trail. The spring is a landmark; bring your own drinking water.
Numbered course guide
Via the former temple site
- Official ascent distance
- 2.7 km
- Official ascent time
- 1h 20m
The shortest of these three official ascent options. Shorter does not mean a flat or accessible walk; it still climbs to the summit.
Numbered course guide
All 12 landmarks · hiking course image
Road map · Illimsan landmarks
The road map opens first. Choose Contours & trails to view terrain; zoom in to read mapped paths. Pins 4 and 5 use OpenStreetMap coordinates; other numbered landmarks have not yet been geolocated. The complete 1–12 key remains in the separate schematic below. Map paths do not confirm current access.
Numbered course guide · 1–12
All 12 numbered landmarks · trail overview
Schematic connections, not a scaled map or GPS route. Drag sideways on a small screen. Select a number for its landmark name. Number 12 marks the forest-road network, not one destination.
Hiking trailForest road · 12
Trailhead & mountain location maps
Location maps help you reach the area; they do not provide a verified hiking track. For the actual trail layout and branch directions, open the county maps below and follow on-site signs.
Open official numbered trail mapOpen official topographic mapNAVER Map · English ↗KakaoMap · English ↗Google Maps ↗
Yongchu Valley trailhead
Illimsan mountain
Landmarks on the official map
Plan the descent before starting
For a first visit, returning along the same marked trail makes junctions easier to recognise. If combining different ascent and descent routes, identify the parking return on the official map before setting out. Do not count an ascent time as the duration of the whole hike.
Longer approaches · separate planning required
These routes use different starting points. Arrange the return transfer if finishing at Yongchu Valley after starting at Jeamsan recreational forest.
- Hanchi → summit5 km · 2h 30m
- Bongsudae → summit3.64 km · 1h 50m
- Jeamsan forest → Gomjae → Sajasan → summit8.17 km · 4h 0m
- Jeamsan forest entrance → Illimsan → Yongchu Falls (traverse)11.37 km · 5h 35m
Before your hike
Check current access restrictions and mountain weather. Start early, carry water, snacks, a windproof layer, rain protection and a charged phone. Download the map beforehand; turn back if visibility or footing deteriorates.
Sources
Route figures and map landmark order checked against Boseong County information on 8 October 2026. Figures are the operator’s guidance, not a live trail-status report.