Kosci100

UTMB World Series

107.0km

November 26

Thredbo,

Australia

utmb·source

Set your ITRA PI

Estimated Finish

14:46:12

ITRA PI

Segment Details

1/12

+0.7% · 1.22km · 31m+ · 22m-

1731m1715m

0.00km1.22km

OSM ↗

highway

unclassified 84%service 16%

surface

unpaved 61%concrete 35%dirt 4%

Elevation Profile

Trail 72% · Extreme 1%Extreme 1%

0.7TDI

105.8km

127.5FlatKM

2963m+

3313m−

2223max

1118min

0:19

3.1km

1:33

13.2km

1:16

9.3km

2:27

24.1km

1:39

12.3km

1:45

12.6km

1:12

7.6km

1:22

9.0km

0:16

2.3km

0:58

4.5km

1:14

5.5km

0:46

2.3km

OSM

AID

Distance

Time

Gain

Loss

Gels

Water

Salts

Segment

3.1km/3.1km

0:19/0:19

105m+

94m−

0.3×40g(12g)

0.2L

1(200mg)

16.3km/13.2km

1:52/1:33

497m+

478m−

1.5×40g(61g)

1.2L

3(600mg)

25.6km/9.3km

3:08/1:16

427m+

38m−

1.2×40g(50g)

0.9L

3(600mg)

49.7km/24.1km

5:35/2:27

718m+

1243m−

2.4×40g(96g)

1.8L

5(1000mg)

62.0km/12.3km

7:14/1:39

457m+

323m−

1.6×40g(65g)

1.2L

3(600mg)

74.5km/12.6km

8:59/1:45

249m+

835m−

1.7×40g(68g)

1.3L

3(600mg)

82.1km/7.6km

10:11/1:12

261m+

185m−

1.2×40g(47g)

0.9L

2(400mg)

91.1km/9.0km

11:32/1:22

332m+

188m−

1.3×40g(53g)

1.0L

3(600mg)

93.4km/2.3km

11:49/0:16

53m+

35m−

0.3×40g(11g)

0.2L

1(200mg)

98.0km/4.5km

12:46/0:58

354m+

29m−

0.9×40g(38g)

0.7L

2(400mg)

103.5km/5.5km

14:00/1:14

309m+

361m−

1.2×40g(48g)

0.9L

2(400mg)

105.8km/2.3km

14:46/0:46

15m+

316m−

0.3×40g(11g)

0.6L

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

36% / 38.4km30% / 31.7km34% / 35.6km

Uphill

15–20%×21.6km

10–15%×106.4km

3–10%×3030.5km

Downhill

25–30%×30.9km

15–20%×51.9km

10–15%×117.3km

3–10%×3125.5km

Peaks for this course have not been detected yet.

Skyrunning · ISFSource

ISF technical requirements

Average incline2.8%> 6.0%

Steep sections (30%+)0.0%≥ 5.0%

Max altitude2223 m> 2000 m

Vertical climb2963 m> 1300 m

Asphalt10.5%< 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 m2223 m

Scrambling75 m

Rocky footing0 m

Level 30/3

Via ferrata0 m

Glacier0 m

Exposed ridge0 m

About Kosci100

Kosci100 is a 107 km ultra trail of Ultra-Trail Kosciuszko by UTMB 2025 in Thredbo, Australia. The race starts on November 26, 2025. The course climbs 2963 m+ and descends 3313 m−, between a low point of 1118 m and a high point of 2223 m. By gradient, 36% of the distance is uphill, 34% downhill and 30% flat. The longest climb runs 5.2 km at an average 9.9% grade (519 m of vertical). The longest descent runs 7.4 km at 8.9% (655 m of vertical). Surface: 72% trail, 17% smooth, and 10% road. Flat-equivalent effort: 127.5 FlatKM.

893 finishers completed the 2025 edition. Men's winner: Loris Lassere (France) in 9:53:20. Women's winner: Sophie Broome (Great Britain) in 11:58:10.

This page has the full results and splits, interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Kosci100.

Other distances of Ultra-Trail Kosciuszko by UTMB 2025KosciMiler (161 km)·Kosci50 (50.0 km)

Other editions of Kosci1002026

Official websitekosciuszko.utmb.world