Location and surroundings
Kum lies in the Sava Hills, within the broader Slovene Prealps of the Eastern Alps, in Slovenia. Administratively it belongs to the municipality of Trbovlje. It is the highest of the 1,341 named peaks in the Sava Hills, and it rises about 1,000 metres above the deeply cut Sava valley landscape around it.
The mountain sits above a mixed hill country of forested slopes, ridges and scattered settlements. The summit area is developed enough to hold a chapel, a church, a hut and a transmitter, while the surrounding slopes remain part of a protected landscape. This contrast between built summit features and rural hills is typical of the Zasavje area.
Neighbouring peaks
The closest named peaks and passes show how isolated Kum is as the dominant high point of its ridge system:
- Varlcev Hrib — 1,140 m, 0.6 km east
- Kopitnik — 910 m, 8.5 km east
- Golce — 385 m, 11.3 km north-east
- Velike Kozje — 993 m, 11.3 km east
- Mrzlica — 1,122 m, 11.3 km north
- Dolgo Brdo — 794 m, 11.4 km west
- Javor — 1,133 m, 11.4 km north-west
- Gozdnik — 1,090 m, 13.1 km north-east
Only Varlcev Hrib comes close in height, but Kum still stands 80 m higher. The other nearby summits are lower and farther away, which makes Kum the main reference point for this part of the hills.
The view from the summit
Within 25 km, the highest peaks are Goli Vrh (Savnice) at 1,423 m, 24.6 km to the north-west, and Čemšeniška Planina at 1,206 m, 14.9 km to the north-west. These are the main higher mountains in the wider area that can shape the skyline from Kum on clear days.
Because Kum is a prominent summit above the Sava valley, the view is usually more about ridges, hills and distant high points than about a single enclosing massif. The north-western horizon is where the tallest nearby summits lie, while the east and north are filled by the lower Sava Hills chain.
The range
Kum belongs to the Sava Hills, a range that spans Croatia and Slovenia. The range high point is the Sava Hills high point itself, and Kum is the highest of its 1,341 named peaks. In regional terms, that makes it the summit that defines the range’s skyline and identity.
The mountain’s alternative name, Zasavski Triglav, reflects that status: it is the highest peak of the local hill country, just as Triglav is the national high point of Slovenia. Kum’s prominence and central position in the range make it a natural landmark for the surrounding settlements and valleys.
Climbing routes
Marked routes lead to Kum from several directions. Named approaches include Trbovlje - Dobovec - Kum, Zagorje - Završje - Kum, Nežina pot (Sopota - Kum), Zidani Most - Škratova dolina - Kum, and Hrastnik - Kum. Wikipedia also mentions marked ascents from Trbovlje and Podkraj, with the Trbovlje side passing near the station area.
For a mountain of this height, a certified guide is usually not necessary on the marked paths, but it can be useful in poor visibility, winter conditions or for visitors unfamiliar with Slovenian hill routes. A guided ascent in Slovenia typically depends on route length, group size, weather and whether hut support or extra equipment is needed.
Access and starting points
Kum is commonly approached from the Trbovlje side, including the route via Dobovec. The summit is also reached from the Sava valley by a narrow road over Dobovec, and the usual starting town is Trbovlje. Public transport access is possible via Hrastnik station, 4.1 km north of the summit.
OpenStreetMap places the nearest settlement at Mali Kum, 940 m south, with Gorenja vas 1.4 km west, Borovak pri Podkumu 2.0 km south-west, and Župa 2.1 km north-east. There are two car parks within 2 km, the nearest 90 m west of the top. Marked hiking routes over or next to the summit include the Trbovlje, Zagorje, Sopota, Zidani Most and Hrastnik lines.
Climate and weather
These are estimates from NASA POWER climate data adjusted to summit elevation. At the top, the warmest month is July at about 16 °C, and the coldest is January at about -3 °C. Around the mountain, annual precipitation is about 1,050 mm, with the wettest month in September at about 125 mm and the driest in January at about 60 mm.
At this height in the eastern Slovenian hills, weather can change quickly with cloud, wind and rain, and winter conditions may bring snow or icy sections on exposed paths. Summer thunderstorms are also a normal hazard in the wider region, especially on open ridges and summit approaches.
Best time to visit
At summit level, mean temperatures are above freezing from March through November, which gives a long hiking season compared with higher Alpine mountains. The most comfortable months are usually late spring, summer and early autumn, when the summit is snow-free more often and the paths are easier to follow.
For drier conditions, January is the driest month in the surrounding area, but it is also the coldest. In practice, many visitors will prefer the warmer months from May to October, while still checking for thunderstorms in summer and slippery ground after rain.
Nature and wildlife
The slopes around Kum belong to a hill landscape of mixed forest, clearings and rural edges typical of eastern Slovenia. Lower down, beech and mixed woodland are common, while the upper slopes and ridges open into grassier and more exposed terrain. Wildlife in this part of the country can include deer, foxes, wild boar and many woodland birds.
The summit area is part of the Krajinski park Kum protected landscape, and the mountain also belongs to the Kum fauna-flora habitat area. That status reflects the ecological value of the hill country, where forest cover, ridge habitats and traditional land use still shape the scenery.
Guides and organised ascents
For a normal summer ascent on marked paths, most fit walkers do not need a guide. A certified guide becomes more useful in winter, in fog, or if you want a route planned around transport, hut stops or poor weather. In Slovenia, the national mountain guide association is the Slovenian Association of Mountain Guides (Združenje gorskih vodnikov Slovenije, ZGVS), an IFMGA/UIAGM member, and the main alpine federation is the Alpine Association of Slovenia.
Examples of established guiding companies working in Slovenia include Climb Triglav in Bled and LIFE Adventures in Lesce. A guided outing usually covers route choice, timing, safety and equipment advice; the cost depends on the number of days, group size, hut nights and any technical gear needed.
Safety and preparation
Kum is not a high alpine peak, but its exposed summit, changing weather and seasonal snow or ice still call for proper footwear, layers and enough water. The marked routes are straightforward in good conditions, yet fog or wet ground can make the hill paths slower and less obvious. In winter, traction and experience with slippery terrain matter more.
For mountain rescue in Slovenia, the emergency number is 112. Rescue is dispatched through that number, so it should be saved before setting out. A downloaded map is useful, especially if you plan to use the ridge routes or approach from the valley side.
History and name
Kum is also known as Kumberg and Zasavski Triglav. The latter name links it to Slovenia’s best-known mountain by comparing Kum’s regional importance with Triglav’s national role. The summit has long been a landmark above the Sava valley and the Zasavje hills.
On the top are a 17th-century church dedicated to Saint Agnes, a chapel of Saint Jošt, and a transmitter. The summit is also associated with the settlement of Ključevica in older descriptions, while modern mapping places the mountain in the municipality of Trbovlje.
Interesting facts
Kum is the highest peak in the Sava Hills and the highest of their 1,341 named peaks. Its prominence is 780 m, which helps explain why it stands out so clearly above the surrounding hills. The nearest higher summit in the wider area is Goli Vrh (Savnice), 24.6 km to the north-west.
The mountain is about 1,000 metres above the Sava valley, and its summit combines religious buildings, a hut and communications infrastructure. That mix of natural high point and human use is one of the defining features of Kum.
FAQ
How high is Kum? Kum rises to 1,220 m above sea level.
Where is Kum located? It is in Slovenia, in the Sava Hills, within the municipality of Trbovlje.
Why is Kum called Zasavski Triglav? Because it is the highest mountain in its region, so it is compared with Slovenia’s national high point.
What are the nearest peaks to Kum? The closest named summit is Varlcev Hrib, 0.6 km east and 1,140 m high; other nearby peaks include Kopitnik, Velike Kozje, Mrzlica and Javor.
Are there huts on Kum? Yes. Planinski dom na Kumu is an alpine hut 170 m south-west of the top.
How long does it take to walk up Kum? From the car park about 0.1 km west of the top, the walk is roughly 5–10 minutes. From Mali Kum, the estimate is about 45–65 minutes, and the real path may take longer.
Is there water on the way to Kum? On a hill mountain like this, carry your own supply unless you plan to stop at the hut. A sensible amount is 1.5–3 litres for a day, depending on heat and route length.
Is mobile phone coverage good on Kum? Coverage is usually good on the summit and along most routes. There are 7 mapped communication masts within 10 km, the nearest about 30 m west of the top. Signal is more likely on the open summit and less reliable in valleys or behind ridges. Emergency calls to 112 work over any available network, and maps should be downloaded before you go.