Transylvania 100K Aid Station Planner
All 13 Transylvania 100K checkpoints pre-loaded. Enter your goal finish time to get estimated arrival times at every aid station.
Full Transylvania 100 - 100K course data: aid stations, cutoffs, course profile
Enter a goal Transylvania 100K finish time and get estimated arrival times at every checkpoint - 103 km with around 6,444 m of climbing, with crew and drop-bag points flagged.
Turns every arrival into a clock time and every cutoff into a margin.
Terrain changes how the goal time is shared between segments, not the total. One surface everywhere cancels out.
Checkpoints (13)
Cutoff Sat 09:00
Cutoff Sat 12:00
Cutoff Sat 15:30
Cutoff Sat 18:00
Cutoff Sat 21:30
Cutoff Sun 00:00
Cutoff Sun 07:00
Cutoff Sun 12:00
Transylvania 100K
Goal 26:04 · Start Sat 05:00
- Crew may meet you at
- Pestera 28.2 km, by Sat 12:54
- Busteni 45.3 km, by Sat 17:25
- Piatra Arsa 53.4 km, by Sat 20:05
- Bolboci 62.2 km, by Sat 21:49
- Moieciu de Sus 82.6 km, by Sun 02:13
- Drop bags
- Busteni 45.3 km, by Sat 17:25
| 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 | Sat 05:00 | - | - | - | - | - |
| Malaiestilikely hiking (pace) | 13.0 | +1446 | 30.0 | 3:55:05 | Sat 08:55 | Sat 09:00 | 5 min | Sat 08:00Set by Pestera | 3:55:05 | 18:08 |
| Batranalikely hiking (pace) | 22.4 | +926 | 21.0 | 6:39:11 | Sat 11:39 | - | - | Sat 10:44Set by Pestera | 2:44:06 | 17:22 |
| Pesteralikely hiking (pace) | 28.2 | +63 | 9.6 | 7:54:11 | Sat 12:54 | Sat 12:00 | -54 min | Sat 13:28Set by Busteni | 1:15:00 | 12:53 |
| Omu IIlikely hiking (pace) | 34.7 | +888 | 15.5 | 9:55:18 | Sat 14:55 | Sat 15:30 | 35 min | Sat 15:29Set by Busteni | 2:01:06 | 18:38 |
| Bustenilikely hiking (pace) | 45.3 | +75 | 19.2 | 12:25:23 | Sat 17:25 | Sat 18:00 | 35 min | Sat 18:50Set by Piatra Arsa | 2:30:05 | 14:13 |
| Piatra Arsalikely hiking (pace) | 53.4 | +1141 | 20.4 | 15:05:01 | Sat 20:05 | Sat 21:30 | 1h25 | Sat 22:15Set by Bolboci | 2:39:39 | 19:41 |
| Bolboci | 62.2 | +132 | 13.4 | 16:49:50 | Sat 21:49 | Sun 00:00 | 2h10 | Sun 02:35Set by Moieciu de Sus | 1:44:49 | 11:52 |
| Saua Strungalikely hiking (pace) | 70.3 | +543 | 13.9 | 18:38:22 | Sat 23:38 | - | - | Sun 04:24Set by Moieciu de Sus | 1:48:32 | 13:32 |
| Moieciu de Suslikely hiking (pace) | 82.6 | +188 | 19.9 | 21:13:56 | Sun 02:13 | Sun 07:00 | 4h46 | Sun 07:09Set by Bran Castle (Finish) | 2:35:34 | 12:36 |
| Poiana Gutanulikely hiking (pace) | 89.5 | +593 | 13.3 | 22:58:26 | Sun 03:58 | - | - | Sun 08:54Set by Bran Castle (Finish) | 1:44:30 | 15:06 |
| Poartalikely hiking (pace) | 98.2 | +362 | 16.5 | 25:07:17 | Sun 06:07 | - | - | Sun 11:03Set by Bran Castle (Finish) | 2:08:51 | 14:54 |
| Bran Castle (Finish) | 103.0 | +87 | 7.2 | 26:04:00 | Sun 07:04 | Sun 12:00 | 4h56 | - | 0:56:43 | 11:45 |
Malaiestilikely hiking (pace)
Sat 08:55Cutoff Sat 09:005 minTight
Leave by Sat 08:00Set by Pestera
- Dist (km)
- 13.0
- D+ (m)
- +1446
- Seg time
- 3:55:05
- Seg pace/km
- 18:08
Batranalikely hiking (pace)
Sat 11:39Leave by Sat 10:44Set by Pestera
- Dist (km)
- 22.4
- D+ (m)
- +926
- Seg time
- 2:44:06
- Seg pace/km
- 17:22
Pesteralikely hiking (pace)
Sat 12:54Cutoff Sat 12:00-54 minBehind cutoff
Leave by Sat 13:28Set by Busteni
- Dist (km)
- 28.2
- D+ (m)
- +63
- Seg time
- 1:15:00
- Seg pace/km
- 12:53
Omu IIlikely hiking (pace)
Sat 14:55Cutoff Sat 15:3035 minTight
Leave by Sat 15:29Set by Busteni
- Dist (km)
- 34.7
- D+ (m)
- +888
- Seg time
- 2:01:06
- Seg pace/km
- 18:38
Bustenilikely hiking (pace)
Sat 17:25Cutoff Sat 18:0035 minTight
Leave by Sat 18:50Set by Piatra Arsa
- Dist (km)
- 45.3
- D+ (m)
- +75
- Seg time
- 2:30:05
- Seg pace/km
- 14:13
Piatra Arsalikely hiking (pace)
Sat 20:05Cutoff Sat 21:301h25Tight
Leave by Sat 22:15Set by Bolboci
- Dist (km)
- 53.4
- D+ (m)
- +1141
- Seg time
- 2:39:39
- Seg pace/km
- 19:41
Bolboci
Sat 21:49Cutoff Sun 00:002h10
Leave by Sun 02:35Set by Moieciu de Sus
- Dist (km)
- 62.2
- D+ (m)
- +132
- Seg time
- 1:44:49
- Seg pace/km
- 11:52
Saua Strungalikely hiking (pace)
Sat 23:38Leave by Sun 04:24Set by Moieciu de Sus
- Dist (km)
- 70.3
- D+ (m)
- +543
- Seg time
- 1:48:32
- Seg pace/km
- 13:32
Moieciu de Suslikely hiking (pace)
Sun 02:13Cutoff Sun 07:004h46
Leave by Sun 07:09Set by Bran Castle (Finish)
- Dist (km)
- 82.6
- D+ (m)
- +188
- Seg time
- 2:35:34
- Seg pace/km
- 12:36
Poiana Gutanulikely hiking (pace)
Sun 03:58Leave by Sun 08:54Set by Bran Castle (Finish)
- Dist (km)
- 89.5
- D+ (m)
- +593
- Seg time
- 1:44:30
- Seg pace/km
- 15:06
Poartalikely hiking (pace)
Sun 06:07Leave by Sun 11:03Set by Bran Castle (Finish)
- Dist (km)
- 98.2
- D+ (m)
- +362
- Seg time
- 2:08:51
- Seg pace/km
- 14:54
Bran Castle (Finish)
Sun 07:04Cutoff Sun 12:004h56
- Dist (km)
- 103.0
- D+ (m)
- +87
- Seg time
- 0:56:43
- Seg pace/km
- 11:45
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.
Next step
About Transylvania 100 - 100K
Transylvania 100 - 100K covers 103 km with around 6,444 m of elevation gain, starting in Bran, Romania. The overall cutoff is 31 hours.
Crew access is allowed at Pestera (28.23 km), Busteni (45.29 km), Piatra Arsa (53.4 km), Bolboci (62.23 km) and Moieciu de Sus (82.6 km). Drop bags are available at Busteni.
Checkpoint data approximate - verify against the current official race guide at transylvania100k.com 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/200. This is TrailMath's extension of the standard ITRA gain-only formula (model TM1, where the descent divisor is a published convention), which adds descent cost because steep technical descents carry real eccentric load. A 5km segment with 500m of gain and 200m of loss has an effort of 5 + 5 + 1 = 11 effort-km - equivalent to running 11km 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/200 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
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