Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, kilometre by kilometre.
Race-day light
For a 23:05 finish (an estimate) · starting 17:00 2 Apr · headlamp km 21–93. Dark means the sun below civil twilight.
Climbs
17 climbs · 5,865 m totalbiggest firstAid stations as published on the course file
| Aid station | km | Mile |
|---|---|---|
| A Plomin Luka | 15.5 | 9.6 |
| A Mošćenička Draga | 34.3 | 21.3 |
| A Poklon | 50.6 | 31.4 |
| A Brgudac | 65.2 | 40.5 |
| A Trstenik | 82.2 | 51.1 |
| A Buzet | 97.3 | 60.5 |
| A Butoniga | 113.9 | 70.8 |
| A Livade | 129.3 | 80.3 |
| A Grožnjan | 144.8 | 90.0 |
| A Buje | 151.8 | 94.3 |
Badge colours match the markers on the map above — always confirm locations and cutoffs with the race organizer.
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Conditions typical race-day weather for 2 Apr at the start
Typical = the median of 2016–2025 for 2 Apr ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.
Race almanac 1 year of this race
Past editions
On race day it reached 18°C at the start, with a low of 8°.
| Year | Start °C | Rain | Wind |
|---|---|---|---|
| 2026 Apr 11 | 18°/8° | dry | 9km/h |
Next race day Fri, Apr 2, 2027 · 5:00 PM start
First and last light are civil twilight, the sun 6° below the horizon. The moon is lit as at midnight after the start; headlamp hours count a typical finish from the start while the sun is below civil twilight. Worked out for the start line.
race-day weather from the Open-Meteo historical archive (ERA5) at the start line.
Reviews what runners who have been there say
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About this course
Istria 100 by UTMB 168K — 2027 covers 166.8 km (103.6 mi) with 6,621 m (21,722 ft) of elevation gain. That is about 40 m per km of climbing, and 6,913 m of descent. The course tops out at 1,386 m and bottoms out at 2 m. There are 10 aid stations on course; the longest stretch between aid is 18.8 km. The profile has 17 sustained climbs; the biggest is the climb to Poklon, +1,375 m over 13.6 km at 10.1% on average (steepest stretch 47%). Race day is 2 April 2027, starting at 17:00; the sun rises at 06:44 and sets at 19:32. Typical race-day weather at the start: a high of 14°C and a low of 8°C, with a 29% chance of a wet day. The interactive map above shows the full route with its elevation profile and aid stations, built from the course's GPS file.
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Course history
- Nov 4, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
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