Transylvania 80K Aid Station Planner
All 11 Transylvania 80K checkpoints pre-loaded. Enter your goal finish time to get estimated arrival times at every aid station.
Full Transylvania 100 - 80K course data: aid stations, cutoffs, course profile
Enter a goal Transylvania 80K finish time and get estimated arrival times at every checkpoint - 82.5 km with around 4,720 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 (11)
Cutoff Sat 09:00
Cutoff Sat 12:00
Cutoff Sat 14:30
Cutoff Sat 17:00
Cutoff Sat 23:00
Cutoff Sun 06:00
Transylvania 80K
Goal 17:27 · Start Sat 05:00
- Crew may meet you at
- Pestera 27.1 km, by Sat 11:38
- Piatra Arsa 33.4 km, by Sat 13:13
- Bolboci 42.3 km, by Sat 14:42
- Moieciu de Sus 62.6 km, by Sat 18:30
- Drop bags
- Bolboci 42.3 km, by Sat 14:42
| 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 | +1498 | 30.7 | 3:29:51 | Sat 08:29 | Sat 09:00 | 30 min | Sat 08:51Set by Pestera | 3:29:51 | 16:11 |
| Batranalikely hiking (pace) | 22.4 | +850 | 20.0 | 5:46:12 | Sat 10:46 | - | - | Sat 11:07Set by Pestera | 2:16:21 | 14:28 |
| Pestera | 27.1 | +11 | 7.6 | 6:38:19 | Sat 11:38 | Sat 12:00 | 22 min | Sat 12:55Set by Piatra Arsa | 0:52:07 | 10:57 |
| Piatra Arsalikely hiking (pace) | 33.4 | +630 | 13.9 | 8:13:17 | Sat 13:13 | Sat 14:30 | 1h17 | Sat 15:31Set by Bolboci | 1:34:58 | 15:19 |
| Bolboci | 42.3 | +98 | 13.0 | 9:42:04 | Sat 14:42 | Sat 17:00 | 2h18 | Sat 19:11Set by Moieciu de Sus | 1:28:47 | 9:57 |
| Saua Strunga | 50.3 | +536 | 13.6 | 11:14:53 | Sat 16:14 | - | - | Sat 20:44Set by Moieciu de Sus | 1:32:49 | 11:36 |
| Moieciu de Sus | 62.6 | +180 | 19.9 | 13:30:35 | Sat 18:30 | Sat 23:00 | 4h29 | Sun 02:03Set by Bran Castle (Finish) | 2:15:42 | 10:60 |
| Poiana Gutanulikely hiking (pace) | 69.2 | +562 | 12.5 | 14:55:41 | Sat 19:55 | - | - | Sun 03:28Set by Bran Castle (Finish) | 1:25:06 | 13:02 |
| Poartalikely hiking (pace) | 77.8 | +276 | 15.1 | 16:39:05 | Sat 21:39 | - | - | Sun 05:12Set by Bran Castle (Finish) | 1:43:24 | 12:01 |
| Bran Castle (Finish) | 82.5 | +79 | 7.0 | 17:27:00 | Sat 22:27 | Sun 06:00 | 7h33 | - | 0:47:55 | 10:05 |
Malaiestilikely hiking (pace)
Sat 08:29Cutoff Sat 09:0030 minTight
Leave by Sat 08:51Set by Pestera
- Dist (km)
- 13.0
- D+ (m)
- +1498
- Seg time
- 3:29:51
- Seg pace/km
- 16:11
Batranalikely hiking (pace)
Sat 10:46Leave by Sat 11:07Set by Pestera
- Dist (km)
- 22.4
- D+ (m)
- +850
- Seg time
- 2:16:21
- Seg pace/km
- 14:28
Pestera
Sat 11:38Cutoff Sat 12:0022 minTight
Leave by Sat 12:55Set by Piatra Arsa
- Dist (km)
- 27.1
- D+ (m)
- +11
- Seg time
- 0:52:07
- Seg pace/km
- 10:57
Piatra Arsalikely hiking (pace)
Sat 13:13Cutoff Sat 14:301h17
Leave by Sat 15:31Set by Bolboci
- Dist (km)
- 33.4
- D+ (m)
- +630
- Seg time
- 1:34:58
- Seg pace/km
- 15:19
Bolboci
Sat 14:42Cutoff Sat 17:002h18
Leave by Sat 19:11Set by Moieciu de Sus
- Dist (km)
- 42.3
- D+ (m)
- +98
- Seg time
- 1:28:47
- Seg pace/km
- 9:57
Saua Strunga
Sat 16:14Leave by Sat 20:44Set by Moieciu de Sus
- Dist (km)
- 50.3
- D+ (m)
- +536
- Seg time
- 1:32:49
- Seg pace/km
- 11:36
Moieciu de Sus
Sat 18:30Cutoff Sat 23:004h29
Leave by Sun 02:03Set by Bran Castle (Finish)
- Dist (km)
- 62.6
- D+ (m)
- +180
- Seg time
- 2:15:42
- Seg pace/km
- 10:60
Poiana Gutanulikely hiking (pace)
Sat 19:55Leave by Sun 03:28Set by Bran Castle (Finish)
- Dist (km)
- 69.2
- D+ (m)
- +562
- Seg time
- 1:25:06
- Seg pace/km
- 13:02
Poartalikely hiking (pace)
Sat 21:39Leave by Sun 05:12Set by Bran Castle (Finish)
- Dist (km)
- 77.8
- D+ (m)
- +276
- Seg time
- 1:43:24
- Seg pace/km
- 12:01
Bran Castle (Finish)
Sat 22:27Cutoff Sun 06:007h33
- Dist (km)
- 82.5
- D+ (m)
- +79
- Seg time
- 0:47:55
- Seg pace/km
- 10:05
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 - 80K
Transylvania 100 - 80K covers 82.5 km with around 4,720 m of elevation gain, starting in Bran, Romania. The overall cutoff is 25 hours.
Crew access is allowed at Pestera (27.15 km), Piatra Arsa (33.35 km), Bolboci (42.28 km) and Moieciu de Sus (62.62 km). Drop bags are available at Bolboci.
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
Track your Transylvania 80K 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