23K Blue Trail

23.0km·1089m+

August 9, 07:00 AM

Kolašin,

Monaco

source

Set your ITRA PI

Estimated Finish

2:39:03

ITRA PI

Segment Details

1/29

+2.2% · 2.00km · 44m+ · 1m-

999m955m

0.00km2.00km

Track Category · OSM

Extreme0%

Technical3%

Trail0%

Smooth0%

Road97%

Unknown0%

Road

🪜 Steps: 69 m

OSM ↗

highway

tertiary 34%residential 29%secondary 22%pedestrian 6%unclassified 5%steps 3%

surface

asphalt 85%paving_stones 6%

lit

yes

width

hgv

incline

down

lane_markings

lanes

maxspeed

40 32%20 29%

Elevation Profile

1.0×

Trail 71% · Extreme 1%Extreme 1%

0.8TDI

22.5km

31.7FlatKM

1094m+

1097m−

1907max

943min

1.0×

OSM

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

28% / 6.2km37% / 8.3km35% / 8.0km

Uphill

25–30%×10.4km

20–25%×11.1km

15–20%×32.7km

3–10%×32.0km

Downhill

25–30%×10.2km

15–20%×31.6km

10–15%×53.7km

3–10%×42.5km

Peaks for this course have not been detected yet.

Skyrunning · ISFSource

ISF technical requirements

Average incline4.9%> 6.0%

Steep sections (30%+)0.0%≥ 5.0%

Max altitude1907 m> 2000 m

Vertical climb1094 m> 1300 m

Asphalt12.8%< 15.0%

UIAA Technical climbing0.3 kmGrade I–II

Possible levelnot enough requirements met to estimate a level

Level 10/1

Peak reachno detection

Level 21/3

Altitude ≥ 3000 m1907 m

Scrambling290 m

Rocky footing0 m

Level 31/3

Via ferrata0 m

Glacier0 m

Exposed ridge^*290 m

* feature detected but below the confident-length floor

About 23K Blue Trail

23K Blue Trail is a 23.0 km trail race of Bjelasica Ultra Trail 2025 in Kolašin, Monaco. The race starts on August 9, 2025 at 07:00 AM. The course climbs 1089 m+ and descends 1097 m−, between a low point of 943 m and a high point of 1907 m. By gradient, 28% of the distance is uphill, 35% downhill and 37% flat. The longest climb runs 3.2 km at an average 17.2% grade (555 m of vertical). The longest descent runs 4.3 km at 12.1% (528 m of vertical). Surface: 72% trail, 14% smooth, and 13% road. Flat-equivalent effort: 31.7 FlatKM.

This page has the interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for 23K Blue Trail.

Other distances of Bjelasica Ultra Trail 2025Red 62k (62.0 km)·Green 45k (45.0 km)

Other editions of 23K Blue Trail2026

Official websitebjelasicatrail.me/en