Istria 100 by UTMB - 168K

Istria 168K Aid Station Planner

All 12 Istria 168K checkpoints pre-loaded. Enter your goal finish time to get estimated arrival times at every aid station.

168km6,800m D+12 checkpointsCutoff: 45h

Full Istria 100 by UTMB - 168K course data: aid stations, cutoffs, course profile

Enter a goal Istria 168K finish time and get estimated arrival times at every checkpoint - 168 km with around 6,800 m of climbing, with crew and drop-bag points flagged.

Goal finish time (hh:mm)

Start time

Turns every arrival into a clock time and every cutoff into a margin.

Terrain type

Terrain changes how the goal time is shared between segments, not the total. One surface everywhere cancels out.

Checkpoints (12)

Name

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Fri 20:00

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Sat 00:00

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Sat 06:00

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Sat 09:00

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Sat 14:00

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Sat 18:00

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Sat 23:00

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Sun 04:00

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Sun 08:00

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Sun 10:00

Name

Terrain to here

Distance (km)

Cumul. D+ (m)

Cumul. D- (m)

Cutoff Sun 14:00

Crew may meet you at

Mošćenička Draga 34.8 km, by Sat 00:05
Poklon 51.4 km, by Sat 04:14
Buzet 98.6 km, by Sat 13:14
Livade 130.9 km, by Sat 19:53

Drop bags

Buzet 98.6 km, by Sat 13:14

Estimated arrival, cutoff margin and latest safe departure per checkpoint.
Checkpoint	Dist (km)	D+ (m)	Km-effort	Arrive by	Clock	Cutoff	Buffer	Leave by	Seg time	Seg pace/km
Start	0	0	-	0:00:00	Fri 17:00	-	-	-	-	-
Plomin Luka	15.7	+510	24.9	3:01:08	Fri 20:01	Fri 20:00	-1 min7:14/km-effort from the start to leave by Fri 20:00 (1% less time)	Fri 19:55Set by Mošćenička Draga	3:01:08	11:32
Mošćenička Dragalikely hiking (pace)	34.8	+970	33.6	7:05:45	Sat 00:05	Sat 00:00	-6 min7:11/km-effort from the start to leave by Sat 00:00 (1% less time)	Sat 01:51Set by Poklon	4:04:37	12:49
Poklonlikely hiking (pace)	51.4	+1495	34.1	11:14:07	Sat 04:14	Sat 06:00	1h46	Sat 06:38Set by Brgudac	4:08:22	14:60
Brgudac	66.1	+241	19.5	13:35:50	Sat 06:35	Sat 09:00	2h24	Sat 10:23Set by Trstenik	2:21:43	9:36
Trsteniklikely hiking (pace)	83.3	+831	29.8	17:12:49	Sat 10:12	Sat 14:00	3h47	Sat 14:58Set by Buzet	3:36:59	12:39
Buzet	98.6	+432	25.0	20:14:41	Sat 13:14	Sat 18:00	4h45	Sat 19:28Set by Butoniga	3:01:52	11:51
Butonigalikely hiking (pace)	115.3	+806	29.0	23:46:00	Sat 16:45	Sat 23:00	6h14	Sun 00:52Set by Livade	3:31:19	12:37
Livadelikely hiking (pace)	130.9	+670	25.7	26:53:11	Sat 19:53	Sun 04:00	8h07	Sun 04:58Set by Grožnjan	3:07:11	12:03
Grožnjan	146.6	+709	24.9	29:54:34	Sat 22:54	Sun 08:00	9h05	Sun 08:59Set by Buje	3:01:24	11:32
Buje	153.6	+44	8.3	30:55:14	Sat 23:55	Sun 10:00	10h05	Sun 11:59Set by Umag (Finish)	1:00:40	8:43
Umag (Finish)	168.0	+92	16.6	32:56:00	Sun 01:56	Sun 14:00	12h04	-	2:00:46	8:22

Plomin Luka
Fri 20:01
Cutoff Fri 20:00-1 minBehind cutoff
To leave Plomin Luka by Fri 20:00: 7:14 min/km-effort from the start, stops included - 1% less time per km-effort than your plan's 7:17 to here.
Leave by Fri 19:55Set by Mošćenička Draga
Dist (km)
15.7
D+ (m)
+510
Seg time
3:01:08
Seg pace/km
11:32
Mošćenička Dragalikely hiking (pace)
Sat 00:05
Cutoff Sat 00:00-6 minBehind cutoff
To leave Mošćenička Draga by Sat 00:00: 7:11 min/km-effort from the start, stops included - 1% less time per km-effort than your plan's 7:17 to here.
Leave by Sat 01:51Set by Poklon
Dist (km)
34.8
D+ (m)
+970
Seg time
4:04:37
Seg pace/km
12:49
Poklonlikely hiking (pace)
Sat 04:14
Cutoff Sat 06:001h46
Leave by Sat 06:38Set by Brgudac
Dist (km)
51.4
D+ (m)
+1495
Seg time
4:08:22
Seg pace/km
14:60
Brgudac
Sat 06:35
Cutoff Sat 09:002h24
Leave by Sat 10:23Set by Trstenik
Dist (km)
66.1
D+ (m)
+241
Seg time
2:21:43
Seg pace/km
9:36
Trsteniklikely hiking (pace)
Sat 10:12
Cutoff Sat 14:003h47
Leave by Sat 14:58Set by Buzet
Dist (km)
83.3
D+ (m)
+831
Seg time
3:36:59
Seg pace/km
12:39
Buzet
Sat 13:14
Cutoff Sat 18:004h45
Leave by Sat 19:28Set by Butoniga
Dist (km)
98.6
D+ (m)
+432
Seg time
3:01:52
Seg pace/km
11:51
Butonigalikely hiking (pace)
Sat 16:45
Cutoff Sat 23:006h14
Leave by Sun 00:52Set by Livade
Dist (km)
115.3
D+ (m)
+806
Seg time
3:31:19
Seg pace/km
12:37
Livadelikely hiking (pace)
Sat 19:53
Cutoff Sun 04:008h07
Leave by Sun 04:58Set by Grožnjan
Dist (km)
130.9
D+ (m)
+670
Seg time
3:07:11
Seg pace/km
12:03
Grožnjan
Sat 22:54
Cutoff Sun 08:009h05
Leave by Sun 08:59Set by Buje
Dist (km)
146.6
D+ (m)
+709
Seg time
3:01:24
Seg pace/km
11:32
Buje
Sat 23:55
Cutoff Sun 10:0010h05
Leave by Sun 11:59Set by Umag (Finish)
Dist (km)
153.6
D+ (m)
+44
Seg time
1:00:40
Seg pace/km
8:43
Umag (Finish)
Sun 01:56
Cutoff Sun 14:0012h04
Dist (km)
168.0
D+ (m)
+92
Seg time
2:00:46
Seg pace/km
8:22

Highlighted rows use a pace heuristic (>12 min/km / >19 min/mi) - likely hiking by speed, not grade. The grade-based power-hike cue is ≥15% (see GAP and Incline tools). Times are distributed proportionally by km-effort. This is a budget, not a forecast: it assumes the same effort pace from start to finish, and in long races most finishers slow as the race goes on, so expect to be ahead of these times early and behind them late.

Leave by is the latest you can start the next segment and still make every cutoff ahead of you at this pace - often set by a station further on, not this one. It does not yet subtract the time you spend stopped, so treat it as the optimistic edge.

Cutoff buffers are estimates from your goal time and published barriers. Courses and barriers change - verify against the official race guide.

Next step

Calculate nutrition →

Istria 168K course in numbers

Climbing per km: 40 m
ITRA km-effort: 236 (100M)
Highest point: 1,386 m
Biggest climb: +1,451 m over 13.1 km at 10.6% (from Mošćenička Draga)
Steepest climb: +389 m over 2.9 km at 13.5%
Longest descent: -853 m over 10.7 km at 7.6% (through Poklon)
Track climbing above 3%: 33%
Winning time / cutoff: 17h56 / 45h00 (2.5x the winner's time)

Section-by-section climbs, descents and grades are on the Istria 168K course page.

About Istria 100 by UTMB - 168K

Istria 100 by UTMB - 168K covers 168 km with around 6,800 m of elevation gain, starting in Labin, Croatia. The overall cutoff is 45 hours.

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.

Checkpoint data approximate - verify against the current official race guide at istria.utmb.world before your race.

How the splits are allocated

Your goal time is split across the Istria 168K legs by km-effort: distance + gain/100 + loss/200. Full methodology.

Track your Istria 168K plan, crew notes, and live progress in the app

TrailMath uses these models to build periodized plans adjusted to your goals and terrain.

Start free

Checkpoints (12)

Plomin Luka

Mošćenička Dragalikely hiking (pace)

Poklonlikely hiking (pace)

Brgudac

Trsteniklikely hiking (pace)

Buzet

Butonigalikely hiking (pace)

Livadelikely hiking (pace)

Grožnjan

Buje

Umag (Finish)

Istria 168K course in numbers

About Istria 100 by UTMB - 168K

How the splits are allocated

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