Istria 100 by UTMB - 69K - Elevation Profile, Aid Stations and Cutoffs
- Buzet, Croatia
- 69.6 km
- 2,400 m D+
- 4 aid stations
Map, checkpoints and cutoffs Map · checkpoints · forecast opens Mar 25 Race-day forecast is live
Race-day conditions
Weather, daylight and your arrival time at all 6 checkpoints, set to the 09:00 start.
- Start
- 09:00
- Daylight at the start
- 06:41-19:33
- Aid stations
- 4
Course profile
Buzet, Croatia Umag, Croatia · point-to-point
- Distance
- 69.6 km Finishes 71 m lower than it starts
- Elevation
- +2,400 m -2,471 m About 34 m of climb per km
- Highest point
- 409 m Hills east of Motovun
Next edition Sat 3 Apr 2027 · 09:00
- Start
- Winner ~5h39 5h39 after the start
- Median finisher 2026 median 10h13 after the start
- Sunset Umag, Croatia 10h36 after the start
- Cutoff 15h after the start
Istria 100 by UTMB - 69K is a 69.6 km ultra-trail with around 2,400 m of elevation gain, starting in Buzet, Croatia. The overall cutoff is 15 hours. The highest point on the course is Hills east of Motovun at 409 m. That is 34 m of climbing per kilometre. Istria 100 by UTMB has 4 races, from 42 to 168 km; this one ranks 3 of 4 by distance and 3 of 4 by climbing per kilometre.
The biggest climb between checkpoints gains around 833 m from Start - Buzet (km 0) to Butoniga (km 17.36). The steepest sustained section on the elevation profile averages about 14% over roughly 2.5 km around km 34. Crew access is allowed at Livade (32.24 km).
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 | 168 km | 6,800 m | 45h00 | Apr 2, 2027 |
| Istria 110K | 111 km | 4,200 m | 28h00 | Apr 3, 2027 |
| Istria 69K (this page) | 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
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Course math
Four numbers worked out from this course's distance, elevation and checkpoints.
TrailMath effort-km
106 effort-km
About 11 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
50K
93 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
+833 m
Buzet → Butoniga · km 0–17.4
The largest gain between two checkpoints, not one continuous climb.
Biggest descent section
−882 m
Buzet → Butoniga · km 0–17.4
The largest loss between two checkpoints. ITRA's km-effort ignores descent; TrailMath counts it: 106 km-effort.
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Istria 100 by UTMB - 69K · 2026
Finish times, 2026 edition
630 runners started. 575 came back. Half of them took longer than 10:13:07. That left the median finisher 4:46:53 inside the 15h cutoff.
Median finish
10:13:07
Half of the 575 finishers were still out there at this point.
4:46:53 in hand before the 15h cutoff
The start line
91.3%
575 of 630 starters made it; 55 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
10:07:59
median finish; average 10:12:19
436 finishers, 76% of the field
Women
10:34:15
median finish; average 10:46:14
139 finishers, 24% of the field
0:26:16 separates the two medians, across 436 men and 139 women.
Finish time by age group
Every track runs from the start to the 15h 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 |
|---|---|---|---|
| 18-19 | - | 1 - too few finishers to publish a time | |
| 20-34 | 9:59:36 | 112 | |
| 35-39 | 9:58:05 | 87 | |
| 40-44 | 9:59:38 | 87 | |
| 45-49 | 9:49:17 | 67 | |
| 50-54 | 10:23:38 | 54 | |
| 55-59 | 11:39:36 | 19 - small sample, read with care | |
| 60-64 | 12:39:42 | 7 - small sample, read with care | |
| 65-69 | - | 2 - too few finishers to publish a time |
| Age | Median finish | Median against the cutoff | Finishers |
|---|---|---|---|
| 18-19 | - | 1 - too few finishers to publish a time | |
| 20-34 | 10:06:06 | 35 | |
| 35-39 | 9:42:28 | 32 | |
| 40-44 | 10:08:00 | 27 | |
| 45-49 | 11:41:04 | 17 - small sample, read with care | |
| 50-54 | 11:08:54 | 15 - small sample, read with care | |
| 55-59 | 12:22:19 | 10 - small sample, read with care | |
| 60-64 | - | 1 - too few finishers to publish a time | |
| 65-69 | - | 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
21% of the finishers came from Croatia alone.
| Nation | Finishers | Share |
|---|---|---|
| Croatia HR | 118 20.5% | |
| Czechia CZ | 83 14.4% | |
| Germany DE | 45 7.8% | |
| Austria AT | 44 7.7% | |
| Poland PL | 41 7.1% | |
| Italy IT | 29 5.0% | |
| Slovenia SI | 29 5.0% | |
| Slovakia SK | 20 3.5% | |
| France FR | 18 3.1% | |
| Belgium BE | 13 2.3% | |
| Hungary HU | 13 2.3% | |
| Sweden SE | 12 2.1% | |
| Spain ES | 11 1.9% | |
| Switzerland CH | 9 1.6% | |
| Serbia RS | 8 1.4% | |
| Bulgaria BG | 7 1.2% | |
| United Kingdom GB | 7 1.2% | |
| Romania RO | 7 1.2% | |
| Kosovo XK | 7 1.2% | |
| Curaçao AN | 3 0.5% | |
| Bosnia & Herzegovina BA | 3 0.5% | |
| Finland FI | 3 0.5% | |
| Lithuania LT | 3 0.5% | |
| Latvia LV | 3 0.5% | |
| United States US | 3 0.5% | |
| South Africa ZA | 3 0.5% | |
| Ecuador EC | 2 0.3% | |
| Greece GR | 2 0.3% | |
| Ireland IE | 2 0.3% | |
| Iceland IS | 2 0.3% | |
| Japan JP | 2 0.3% | |
| Moldova MD | 2 0.3% | |
| Netherlands NL | 2 0.3% | |
| New Zealand NZ | 2 0.3% | |
| Argentina AR | 1 0.2% | |
| Australia AU | 1 0.2% | |
| Canada CA | 1 0.2% | |
| Chile CL | 1 0.2% | |
| China CN | 1 0.2% | |
| Denmark DK | 1 0.2% | |
| Estonia EE | 1 0.2% | |
| South Korea KR | 1 0.2% | |
| Malaysia MY | 1 0.2% | |
| Norway NO | 1 0.2% | |
| Nepal NP | 1 0.2% | |
| Singapore SG | 1 0.2% | |
| El Salvador SV | 1 0.2% | |
| Tunisia TN | 1 0.2% | |
| Türkiye TR | 1 0.2% | |
| Ukraine UA | 1 0.2% | |
| Uruguay UY | 1 0.2% | |
| 41 other nations 31 other nations 21 other nations 11 other nations 1 other nation | 135 23.5% 51 8.9% 25 4.3% 11 1.9% 1 0.2% |
Showing 20 of 51 nations. Showing 30 of 51 nations. Showing 40 of 51 nations. Showing 50 of 51 nations. Showing 51 of 51 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 69K 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?
Buzet to Butoniga: +833 m over 17.4 km, straight from the gun. 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?
Livade, km 32.24 - your only crew point.
Is 10h a realistic finish for me?
10h would put you in the faster half of 2026 finishers - the median was 10:13:07. It means holding 8:37/km overall.
The assistant answers that once it can see your training.
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Example answer
Your long runs peak at 20 km, so the plan builds to 4-hour long runs. Cutoff buffer at Livade: 1h46.
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Aid stations and checkpoints
| Checkpoint | Km | Cumulative gain (m) | Cumulative loss (m) | Cutoff |
|---|---|---|---|---|
| Start - Buzet Services not published | 0 | 0 | 0 | - |
| Butoniga | 17.36 | 833 | 882 | Sat 12:30 |
| Livade Crew | 32.24 | 1,527 | 1,585 | Sat 16:00 |
| Grožnjan | 47.97 | 2,271 | 2,034 | Sat 19:30 |
| Buje | 54.93 | 2,309 | 2,217 | Sat 21:00 |
| Umag (Finish) Drop bag | 69.6 | 2,400 | 2,471 | Sun 00:00 |
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 - 69K have?
Istria 100 by UTMB - 69K has around 2,400 m of cumulative elevation gain and 2,471 m of loss over 69.6 km.
What is the cutoff time for Istria 100 by UTMB - 69K?
The overall Istria 100 by UTMB - 69K cutoff is 15 hours, with intermediate time barriers at major checkpoints. Winning times are typically around 6 hours.
How long is Istria 100 by UTMB - 69K?
Istria 100 by UTMB - 69K covers approximately 69.6 km, starting in Buzet, Croatia.
What is the highest point of Istria 100 by UTMB - 69K?
The highest point of Istria 100 by UTMB - 69K is Hills east of Motovun at 409 m.
How many aid stations does Istria 100 by UTMB - 69K have and which allow crew?
The checkpoint table lists 4 major aid points between the start and the finish. Crew access is allowed at Livade (32.24 km).
Training for this race?
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