Istria 100 by UTMB - 168K - Elevation Profile, Aid Stations and Cutoffs
- Labin, Croatia
- 168 km
- 6,800 m D+
- 10 aid stations
Map, checkpoints and cutoffs Map · checkpoints · forecast opens Mar 24 Race-day forecast is live
Race-day conditions
Weather, daylight and your arrival time at all 12 checkpoints, set to the 17:00 start.
- Start
- 17:00
- Daylight at the start
- 06:43-19:31
- Aid stations
- 10
Course profile
Labin, Croatia Umag, Croatia · point-to-point
- Distance
- 168 km Finishes 293 m lower than it starts
- Elevation
- +6,800 m -7,093 m About 40 m of climb per km
- Highest point
- 1,386 m Vojak (Učka)
Next edition Fri 2 Apr 2027 · 17:00
- Start
- Sunset Umag, Croatia 2h34 after the start
- Sunrise Umag, Croatia 13h44 after the start
- Winner ~17h56 17h56 after the start
- Median finisher 2026 median 32h56 after the start
- Cutoff 45h after the start
A median finisher runs 17h30 in the dark.
Istria 100 by UTMB - 168K is a 168 km ultra-trail with around 6,800 m of elevation gain, starting in Labin, Croatia. The overall cutoff is 45 hours. The highest point on the course is Vojak (Učka) at 1,386 m. That is 40 m of climbing per kilometre. Istria 100 by UTMB has 4 races, from 42 to 168 km; this one ranks 1 of 4 by distance and 1 of 4 by climbing per kilometre.
The biggest climb between checkpoints gains around 1,495 m from Mošćenička Draga (km 34.79) to Poklon (km 51.35). The steepest sustained section on the elevation profile averages about 17% over roughly 3 km around km 40. Crew access is allowed at Mošćenička Draga (34.79 km), Poklon (51.35 km), Buzet (98.6 km) and Livade (130.88 km). Drop bags are available at Buzet.
Data is approximate and courses change between editions - always verify against the official race guide.
Other distances at Istria 100 by UTMB
| Race | Distance | D+ | Cutoff | Next start |
|---|---|---|---|---|
| Istria 168K (this page) | 168 km | 6,800 m | 45h00 | Apr 2, 2027 |
| Istria 110K | 111 km | 4,200 m | 28h00 | Apr 3, 2027 |
| Istria 69K | 69.6 km | 2,400 m | 15h00 | Apr 3, 2027 |
| Istria 42K | 42 km | 1,000 m | 8h00 | Apr 3, 2027 |
Plan against the cutoffs
Enter a goal finish time and see estimated arrivals vs checkpoint cutoffs.
Estimate your finish
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Course math
Four numbers worked out from this course's distance, elevation and checkpoints.
TrailMath effort-km
271 effort-km
About 33 h for a mid-pack finisher (index 500). Not a pacing guarantee.
Distance + gain ÷ 100 + loss ÷ 200, beside ITRA's gain-only km-effort. Model TM1.0.
How TrailMath works →UTMB Index category
100M
236 km-effort (distance + gain ÷ 100). Calculated from the course figures, not an official classification.
Estimate your UTMB Index → ITRA and UTMB indexes explainedBiggest climb section
+1,495 m
Mošćenička Draga → Poklon · km 34.8–51.4
The largest gain between two checkpoints, not one continuous climb.
Mošćenička Draga cutoff: Sat 00:00
Plan against barriers →Biggest descent section
−1,065 m
Trstenik → Buzet · km 83.3–98.6
The largest loss between two checkpoints. ITRA's km-effort ignores descent; TrailMath counts it: 271 km-effort.
Open in GPX Explorer →Share this race
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Istria 100 by UTMB - 168K · 2026
Finish times, 2026 edition
374 runners started. 256 came back. Half of them took longer than 32:56:09. That left the median finisher 12:03:51 inside the 45h cutoff.
Median finish
32:56:09
Half of the 256 finishers were still out there at this point.
12:03:51 in hand before the 45h cutoff
The start line
68.4%
256 of 374 starters made it; 118 did not.
still moving when a cutoff closed
stopped by choice or by the medics
Men and women
Two medians on the same scale. The bars run from the start to the cutoff, so the gap between them is the gap in time.
Men
32:53:52
median finish; average 33:02:24
223 finishers, 87% of the field
Women
33:27:55
median finish; average 34:06:10
33 finishers, 13% of the field
0:34:03 separates the two medians, across 223 men and 33 women.
Finish time by age group
Every track runs from the start to the 45h cutoff, so the empty part of a bar is the time that group's median finisher still had. Men and women are drawn on the same scale.
| Age | Median finish | Median against the cutoff | Finishers |
|---|---|---|---|
| 20-34 | 35:24:26 | 47 | |
| 35-39 | 31:38:36 | 35 | |
| 40-44 | 31:47:20 | 36 | |
| 45-49 | 30:42:12 | 47 | |
| 50-54 | 33:55:10 | 36 | |
| 55-59 | 34:41:40 | 13 - small sample, read with care | |
| 60-64 | 35:10:42 | 7 - small sample, read with care | |
| 65-69 | - | 2 - too few finishers to publish a time |
| Age | Median finish | Median against the cutoff | Finishers |
|---|---|---|---|
| 20-34 | 35:30:45 | 8 - small sample, read with care | |
| 35-39 | 30:11:17 | 8 - small sample, read with care | |
| 40-44 | 33:10:50 | 5 - small sample, read with care | |
| 45-49 | 33:06:13 | 6 - small sample, read with care | |
| 50-54 | 40:40:17 | 3 - small sample, read with care | |
| 55-59 | - | 2 - too few finishers to publish a time | |
| 60-64 | - | 1 - too few finishers to publish a time |
Full bar: 20 finishers or more. Tick alone: fewer than 20, too few for a median to say much. The shaded row is the biggest group.
Where the finishers came from
18% of the finishers came from Croatia alone.
| Nation | Finishers | Share |
|---|---|---|
| Croatia HR | 46 18.0% | |
| Austria AT | 27 10.5% | |
| Czechia CZ | 22 8.6% | |
| Germany DE | 19 7.4% | |
| Slovakia SK | 17 6.6% | |
| Poland PL | 16 6.3% | |
| Serbia RS | 13 5.1% | |
| United Kingdom GB | 12 4.7% | |
| Italy IT | 11 4.3% | |
| Romania RO | 9 3.5% | |
| Slovenia SI | 9 3.5% | |
| Belgium BE | 6 2.3% | |
| France FR | 6 2.3% | |
| Sweden SE | 6 2.3% | |
| Finland FI | 5 2.0% | |
| Bulgaria BG | 3 1.2% | |
| Spain ES | 3 1.2% | |
| Greece GR | 3 1.2% | |
| Montenegro ME | 3 1.2% | |
| Netherlands NL | 3 1.2% | |
| Bosnia & Herzegovina BA | 2 0.8% | |
| North Macedonia MK | 2 0.8% | |
| Norway NO | 2 0.8% | |
| United States US | 2 0.8% | |
| Curaçao AN | 1 0.4% | |
| Australia AU | 1 0.4% | |
| Canada CA | 1 0.4% | |
| Ecuador EC | 1 0.4% | |
| Hong Kong SAR China HK | 1 0.4% | |
| Ireland IE | 1 0.4% | |
| Macao SAR China MO | 1 0.4% | |
| Malta MT | 1 0.4% | |
| Portugal PT | 1 0.4% | |
| 23 other nations 13 other nations 3 other nations | 64 25.0% 17 6.6% 3 1.2% |
Showing 20 of 33 nations. Showing 30 of 33 nations. Showing 33 of 33 nations.
Bar length is against the largest nation. The smallest counts are drawn at a minimum visible width, so their bars are not to scale.
How these numbers were computed
These are times for runners who finished. They exclude everyone who started and did not, so they describe how long finishing took, not how long the race takes. Bands with only a handful of finishers move a lot from one edition to the next.
We plot the median, not the average. A handful of very quick runners drags the average well below the time half the field actually beat, so the median is the honest number to plan against.
Nationality here shows who travels to this race, not who runs it best. That alone is why a host nation tops almost every list.
Computed from the full official results, verified October 27, 2026 - Official results
Ask the course
Ask Istria 168K anything about climbs, pacing, crew or cutoffs.
Answers come from this course's data, your plan and your training.
Which climb should I respect most?
Mošćenička Draga to Poklon: +1,495 m over 16.6 km, from km 34.79. Hike the steep sections at an effort you could hold for hours - the race is decided after this climb, not on it.
Where can my crew meet me?
Mošćenička Draga, km 34.79 - the first of 4 crew points. The next is Poklon, km 51.35. Have them bring warm layers: the course tops out at 1,386 m, through the night, in April.
Is 32h a realistic finish for me?
32h would put you in the faster half of 2026 finishers - the median was 32:56:09. It means holding 11:26/km overall.
The assistant answers that once it can see your training.
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Your long runs peak at 30 km, so the plan builds to 4-hour long runs, two of them at night. Cutoff buffer at Trstenik: 4h16.
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~23 weeks · peak ~8 h/week · 5 run + 2 strength days
For a 168 km race, aim for about 12 h/week at peak. Set your availability to 14 h/week in the app for the headroom to build there gradually.
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Aid stations and checkpoints
| Checkpoint | Km | Cumulative gain (m) | Cumulative loss (m) | Cutoff |
|---|---|---|---|---|
| Start - Labin Services not published | 0 | 0 | 0 | - |
| Plomin Luka | 15.7 | 510 | 817 | Fri 20:00 |
| Mošćenička Draga Crew | 34.79 | 1,480 | 1,780 | Sat 00:00 |
| Poklon Crew | 51.35 | 2,975 | 2,302 | Sat 06:00 |
| Brgudac | 66.1 | 3,216 | 2,764 | Sat 09:00 |
| Trstenik | 83.26 | 4,047 | 3,632 | Sat 14:00 |
| Buzet Crew Drop bag | 98.6 | 4,479 | 4,697 | Sat 18:00 |
| Butoniga | 115.35 | 5,285 | 5,541 | Sat 23:00 |
| Livade Crew | 130.88 | 5,955 | 6,238 | Sun 04:00 |
| Grožnjan | 146.6 | 6,664 | 6,660 | Sun 08:00 |
| Buje | 153.56 | 6,708 | 6,847 | Sun 10:00 |
| Umag (Finish) | 168 | 6,800 | 7,093 | Sun 14:00 |
Data is approximate and courses change between editions - always verify against the official race guide. Source: official race guide, verified October 27, 2026 - Official race website
FAQ
How much elevation gain does Istria 100 by UTMB - 168K have?
Istria 100 by UTMB - 168K has around 6,800 m of cumulative elevation gain and 7,093 m of loss over 168 km.
What is the cutoff time for Istria 100 by UTMB - 168K?
The overall Istria 100 by UTMB - 168K cutoff is 45 hours, with intermediate time barriers at major checkpoints. Winning times are typically around 18 hours.
How long is Istria 100 by UTMB - 168K?
Istria 100 by UTMB - 168K covers approximately 168 km, starting in Labin, Croatia.
What is the highest point of Istria 100 by UTMB - 168K?
The highest point of Istria 100 by UTMB - 168K is Vojak (Učka) at 1,386 m.
How many aid stations does Istria 100 by UTMB - 168K have and which allow crew?
The checkpoint table lists 10 major aid points between the start and the finish. Crew access is allowed at Mošćenička Draga (34.79 km), Poklon (51.35 km), Buzet (98.6 km) and Livade (130.88 km). Drop bags are available at Buzet.
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