Val d'Aran by UTMB - VDA 163K

VDA 163K Aid Station Planner

All 21 VDA 163K checkpoints pre-loaded. Enter your goal finish time to get estimated arrival times at every aid station.

163km10,000m D+21 checkpointsCutoff: 48h

Full Val d'Aran by UTMB - VDA 163K course data: aid stations, cutoffs, course profile

Enter a goal VDA 163K finish time and get estimated arrival times at every checkpoint - 163 km with around 10,000 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 (21)

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Distance (km)

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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 16:00	-	-	-	-	-
Bassa d'Oleslikely hiking (pace)	10.5	+1263	27.4	3:17:06	Fri 19:17	Fri 19:15	-2 min	Fri 18:43Set by Refugi Honeria	3:17:06	18:47
Artiga de Linlikely hiking (pace)	24.6	+806	28.4	6:41:41	Fri 22:41	Fri 22:15	-27 min	Fri 22:08Set by Refugi Honeria	3:24:35	14:31
Poilanerlikely hiking (pace)	33.0	+1048	22.4	9:22:48	Sat 01:22	-	-	Sat 00:49Set by Refugi Honeria	2:41:07	19:16
Portilhonlikely hiking (pace)	42.6	+489	22.4	12:03:40	Sat 04:03	Sat 04:00	-4 min	Sat 03:30Set by Refugi Honeria	2:40:52	16:43
Bossòstlikely hiking (pace)	49.2	+168	13.3	13:39:16	Sat 05:39	Sat 05:30	-9 min	Sat 05:05Set by Refugi Honeria	1:35:36	14:29
Canejanlikely hiking (pace)	58.2	+525	16.5	15:38:13	Sat 07:38	Sat 08:00	22 min	Sat 07:04Set by Refugi Honeria	1:58:58	13:10
Refugi Honerialikely hiking (pace)	65.6	+689	18.1	17:48:26	Sat 09:48	Sat 09:15	-33 min	Sat 11:47Set by Còth de Varradòs	2:10:12	17:30
Mines de Liatlikely hiking (pace)	75.7	+1425	25.2	20:49:33	Sat 12:49	-	-	Sat 14:48Set by Còth de Varradòs	3:01:08	17:59
Còth de Varradòs	81.7	+128	9.9	22:00:43	Sat 14:00	Sat 16:00	1h59	Sat 16:38Set by Montgarri	1:11:10	11:55
Port d'Uretslikely hiking (pace)	90.2	+701	17.0	24:03:08	Sat 16:03	-	-	Sat 18:41Set by Montgarri	2:02:25	14:27
Montgarrilikely hiking (pace)	99.5	+123	17.2	26:06:46	Sat 18:06	Sat 20:45	2h38	Sat 21:21Set by Beret	2:03:38	13:09
Beret	104.7	+214	7.4	27:00:06	Sat 19:00	Sat 22:15	3h15	Sat 22:18Set by Salardú	0:53:20	10:25
Salardú	113.6	+79	14.1	28:41:48	Sat 20:41	Sun 00:00	3h18	Sun 00:58Set by Banhs de Tredòs	1:41:41	11:25
Banhs de Tredòslikely hiking (pace)	122.4	+553	14.8	30:27:58	Sat 22:27	Sun 02:45	4h17	Sun 04:25Set by Colomèrs	1:46:11	12:01
Estanh Obagolikely hiking (pace)	129.2	+513	12.1	31:55:11	Sat 23:55	-	-	Sun 05:52Set by Colomèrs	1:27:12	12:53
Colomèrslikely hiking (pace)	134.0	+165	9.3	33:02:17	Sun 01:02	Sun 07:00	5h58	Sun 07:33Set by Arties	1:07:06	13:50
Mont-Romieslikely hiking (pace)	144.3	+363	17.8	35:10:17	Sun 03:10	-	-	Sun 09:41Set by Arties	2:08:00	12:26
Artieslikely hiking (pace)	148.8	+14	8.9	36:14:07	Sun 04:14	Sun 10:45	6h31	Sun 11:44Set by Santet Escunhau	1:03:49	14:17
Santet Escunhaulikely hiking (pace)	154.3	+685	12.6	37:44:46	Sun 05:44	Sun 13:15	7h30	Sun 14:12Set by Vielha (Finish)	1:30:40	16:38
Vielha (Finish)likely hiking (pace)	163.0	+49	14.9	39:32:00	Sun 07:32	Sun 16:00	8h28	-	1:47:14	12:16

Bassa d'Oleslikely hiking (pace)
Fri 19:17
Cutoff Fri 19:15-2 minBehind cutoff
Leave by Fri 18:43Set by Refugi Honeria
Dist (km)
10.5
D+ (m)
+1263
Seg time
3:17:06
Seg pace/km
18:47
Artiga de Linlikely hiking (pace)
Fri 22:41
Cutoff Fri 22:15-27 minBehind cutoff
Leave by Fri 22:08Set by Refugi Honeria
Dist (km)
24.6
D+ (m)
+806
Seg time
3:24:35
Seg pace/km
14:31
Poilanerlikely hiking (pace)
Sat 01:22
Leave by Sat 00:49Set by Refugi Honeria
Dist (km)
33.0
D+ (m)
+1048
Seg time
2:41:07
Seg pace/km
19:16
Portilhonlikely hiking (pace)
Sat 04:03
Cutoff Sat 04:00-4 minBehind cutoff
Leave by Sat 03:30Set by Refugi Honeria
Dist (km)
42.6
D+ (m)
+489
Seg time
2:40:52
Seg pace/km
16:43
Bossòstlikely hiking (pace)
Sat 05:39
Cutoff Sat 05:30-9 minBehind cutoff
Leave by Sat 05:05Set by Refugi Honeria
Dist (km)
49.2
D+ (m)
+168
Seg time
1:35:36
Seg pace/km
14:29
Canejanlikely hiking (pace)
Sat 07:38
Cutoff Sat 08:0022 minTight
Leave by Sat 07:04Set by Refugi Honeria
Dist (km)
58.2
D+ (m)
+525
Seg time
1:58:58
Seg pace/km
13:10
Refugi Honerialikely hiking (pace)
Sat 09:48
Cutoff Sat 09:15-33 minBehind cutoff
Leave by Sat 11:47Set by Còth de Varradòs
Dist (km)
65.6
D+ (m)
+689
Seg time
2:10:12
Seg pace/km
17:30
Mines de Liatlikely hiking (pace)
Sat 12:49
Leave by Sat 14:48Set by Còth de Varradòs
Dist (km)
75.7
D+ (m)
+1425
Seg time
3:01:08
Seg pace/km
17:59
Còth de Varradòs
Sat 14:00
Cutoff Sat 16:001h59Tight
Leave by Sat 16:38Set by Montgarri
Dist (km)
81.7
D+ (m)
+128
Seg time
1:11:10
Seg pace/km
11:55
Port d'Uretslikely hiking (pace)
Sat 16:03
Leave by Sat 18:41Set by Montgarri
Dist (km)
90.2
D+ (m)
+701
Seg time
2:02:25
Seg pace/km
14:27
Montgarrilikely hiking (pace)
Sat 18:06
Cutoff Sat 20:452h38Tight
Leave by Sat 21:21Set by Beret
Dist (km)
99.5
D+ (m)
+123
Seg time
2:03:38
Seg pace/km
13:09
Beret
Sat 19:00
Cutoff Sat 22:153h15
Leave by Sat 22:18Set by Salardú
Dist (km)
104.7
D+ (m)
+214
Seg time
0:53:20
Seg pace/km
10:25
Salardú
Sat 20:41
Cutoff Sun 00:003h18
Leave by Sun 00:58Set by Banhs de Tredòs
Dist (km)
113.6
D+ (m)
+79
Seg time
1:41:41
Seg pace/km
11:25
Banhs de Tredòslikely hiking (pace)
Sat 22:27
Cutoff Sun 02:454h17
Leave by Sun 04:25Set by Colomèrs
Dist (km)
122.4
D+ (m)
+553
Seg time
1:46:11
Seg pace/km
12:01
Estanh Obagolikely hiking (pace)
Sat 23:55
Leave by Sun 05:52Set by Colomèrs
Dist (km)
129.2
D+ (m)
+513
Seg time
1:27:12
Seg pace/km
12:53
Colomèrslikely hiking (pace)
Sun 01:02
Cutoff Sun 07:005h58
Leave by Sun 07:33Set by Arties
Dist (km)
134.0
D+ (m)
+165
Seg time
1:07:06
Seg pace/km
13:50
Mont-Romieslikely hiking (pace)
Sun 03:10
Leave by Sun 09:41Set by Arties
Dist (km)
144.3
D+ (m)
+363
Seg time
2:08:00
Seg pace/km
12:26
Artieslikely hiking (pace)
Sun 04:14
Cutoff Sun 10:456h31
Leave by Sun 11:44Set by Santet Escunhau
Dist (km)
148.8
D+ (m)
+14
Seg time
1:03:49
Seg pace/km
14:17
Santet Escunhaulikely hiking (pace)
Sun 05:44
Cutoff Sun 13:157h30
Leave by Sun 14:12Set by Vielha (Finish)
Dist (km)
154.3
D+ (m)
+685
Seg time
1:30:40
Seg pace/km
16:38
Vielha (Finish)likely hiking (pace)
Sun 07:32
Cutoff Sun 16:008h28
Dist (km)
163.0
D+ (m)
+49
Seg time
1:47:14
Seg pace/km
12:16

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.

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.

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About Val d'Aran by UTMB - VDA 163K

Val d'Aran by UTMB - VDA 163K covers 163 km with around 10,000 m of elevation gain, starting in Vielha, Spain. The overall cutoff is 48 hours.

Crew access is allowed at Bossòst (49.17 km), Salardú (113.58 km) and Arties (148.81 km). Drop bags are available at Bossòst and Salardú.

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

The science behind km-effort pacing

Most runners build race pacing plans by dividing total distance evenly - which ignores the fact that an uphill kilometre takes far longer than a flat one. This planner uses TrailMath's enhanced km-effort model to distribute your goal time proportionally by effort, not by distance.

The km-effort formula for each segment is: distance_km + gain_m/100 + loss_m/150. This is TrailMath's extension of the standard ITRA gain-only formula, which adds descent cost based on Minetti's finding that steep technical descents carry real metabolic load. A 5km segment with 500m of gain and 200m of loss has an effort of 5 + 5 + 1.3 = 11.3 km-effort - equivalent to running 11.3km flat. Time is allocated proportionally to this effort score.

Why gain and loss have asymmetric costs. Minetti et al. (2002) mapped the metabolic cost of inclined locomotion across gradients from -45% to +45%. The key findings: metabolic cost rises steeply above 15-20% uphill grade, making power hiking more energy-efficient than running on steep climbs. On descents, eccentric muscle loading (quads acting as brakes) creates its own metabolic cost - steep technical descents are far more demanding than the same gradient on a smooth fire road. The gain/100 + loss/150 asymmetry in the formula reflects this - gain is more costly per metre than loss, but loss is not free.

Power hiking threshold is flagged at segments where your computed pace exceeds 12 min/km (19 min/mile). This threshold corresponds to the crossover point where walking biomechanics become more efficient than running on steep uphill terrain. Strategic power hiking on marked segments preserves leg muscle for descents and reduces overall race time compared to running everything.

This km-effort model is the same formula used in TrailMath's training engine for load calculation (following Dan Johnston's asymmetric elevation scoring methodology), ensuring consistency between how your training load is measured and how your race effort is planned.

Minetti AE et al. (2002). Energy cost of walking and running at extreme uphill and downhill slopes. J Appl Physiol. 93(3):1039-46. Minetti AE et al. (1995). Mechanical determinants of gradient walking energetics in man. J Physiol. 481(Pt 1):235-43. ITRA. km-effort formula. International Trail Running Association. itra.run

Track your VDA 163K plan, crew notes, and live progress in the app

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

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Checkpoints (21)

Bassa d'Oleslikely hiking (pace)

Artiga de Linlikely hiking (pace)

Poilanerlikely hiking (pace)

Portilhonlikely hiking (pace)

Bossòstlikely hiking (pace)

Canejanlikely hiking (pace)

Refugi Honerialikely hiking (pace)

Mines de Liatlikely hiking (pace)

Còth de Varradòs

Port d'Uretslikely hiking (pace)

Montgarrilikely hiking (pace)

Beret

Salardú

Banhs de Tredòslikely hiking (pace)

Estanh Obagolikely hiking (pace)

Colomèrslikely hiking (pace)

Mont-Romieslikely hiking (pace)

Artieslikely hiking (pace)

Santet Escunhaulikely hiking (pace)

Vielha (Finish)likely hiking (pace)

About Val d'Aran by UTMB - VDA 163K

The science behind km-effort pacing

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