Lake Bled 80K

UTMB World Series

80.0km·4100m+

September 19

Kranjska Gora,

Slovenia

utmb·source

Set your ITRA PI

Estimated Finish

13:03:46

ITRA PI

Segment Details

1/7

-0.3% · 0.65km · 34m+ · 36m-

485m473m

0.00km0.65km

OSM ↗

highway

pedestrian

surface

asphalt 86%concrete 14%

smoothness

excellent 86%good 14%

lit

yes

foot

designated

bicycle

yes 86%no 14%

motor_vehicle

sidewalk

Elevation Profile

Trail 70% · Extreme 1%Extreme 1%

1.8TDI

78.0km

115.3FlatKM

3819m+

3489m−

2166max

473min

1:25

14.4km

2:35

12.5km

1:33

4.9km

2:05

12.2km

2:38

17.2km

1:39

10.7km

1:08

6.0km

OSM

AID

Distance

Time

Gain

Loss

Gels

Water

Salts

Segment

14.4km/14.4km

1:25/1:25

426m+

342m−

1.5×40g(58g)

1.1L

3(600mg)

27.0km/12.5km

4:00/2:35

1448m+

469m−

2.7×40g(107g)

1.9L

5(1000mg)

31.9km/4.9km

5:33/1:33

735m+

278m−

1.6×40g(64g)

1.2L

3(600mg)

44.1km/12.2km

7:38/2:05

434m+

917m−

2.2×40g(86g)

1.6L

4(800mg)

61.3km/17.2km

10:17/2:38

765m+

1467m−

2.7×40g(109g)

2.0L

5(1000mg)

72.0km/10.7km

11:56/1:39

456m+

348m−

1.7×40g(69g)

1.2L

3(600mg)

78.0km/6.0km

13:04/1:08

177m+

282m−

0.6×40g(26g)

0.8L

2(400mg)

AID

Distance

Time

Gels

Water

Salts

Gradient Matrix

Extra

Select a gradient

Uphill

Downhill

>40%

30%

25%

20%

15%

10%

0.5

0.3

0.2

0.3

0.5

Uphill

>40%

30%

25%

20%

15%

10%

0.2

0.3

0.5

10%

15%

20%

25%

30%

>40%

Downhill

Technical sections presentDarker — steeper and longer

Extremes

Gradient Breakdown

32% / 24.9km32% / 25.2km36% / 27.9km

Uphill

30–40%×52.2km

25–30%×31.2km

20–25%×43.8km

15–20%×21.6km

10–15%×145.8km

3–10%×1910.2km

Downhill

30–40%×10.3km

25–30%×41.5km

20–25%×32.0km

15–20%×73.8km

10–15%×87.7km

3–10%×2112.6km

Peaks for this course have not been detected yet.

Skyrunning · ISFSource

ISF technical requirements

Average incline4.9%> 6.0%

Steep sections (30%+)3.3%≥ 5.0%

Max altitude2166 m> 2000 m

Vertical climb3819 m> 1300 m

Asphalt24.1%< 15.0%

UIAA Technical climbing0.1 kmGrade I–II

Possible level

1+23

estimated · high confidence

Level 10/1

Peak reachno detection

Level 21/3

Altitude ≥ 3000 m2166 m

Scrambling60 m

Rocky footing0 m

Level 31/3

Via ferrata0 m

Glacier0 m

Exposed ridge^*60 m

* feature detected but below the confident-length floor

About Lake Bled 80K

Lake Bled 80K is a 80.0 km ultra trail of Julian Alps Trail Run by UTMB 2025 in Kranjska Gora, Slovenia. The race starts on September 19, 2025. The course climbs 4100 m+ and descends 3489 m−, between a low point of 473 m and a high point of 2166 m. By gradient, 32% of the distance is uphill, 36% downhill and 32% flat. The longest climb runs 3.7 km at an average 15.4% grade (576 m of vertical). The longest descent runs 5.6 km at 8.4% (471 m of vertical). Surface: 72% trail and 24% road. Flat-equivalent effort: 115.3 FlatKM.

559 finishers completed the 2025 edition. Men's winner: Karol Sioła (Poland) in 8:32:56. Women's winner: Juli Brüning (Germany) in 10:08:52.

This page has the full results and splits, interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Lake Bled 80K.

Other distances of Julian Alps Trail Run by UTMB 2025I Feel Slovenia 120K (124 km)·Sky Trail 50K (50.0 km)·Kranjska Gora 25K (25.0 km)·INTERSPORT SPEED 15K (15.0 km)·FUNNY 10K (10.0 km)

Other editions of Lake Bled 80K2026

Official websitejulianalps.utmb.world