SkyRun 100 Aid Station Planner
All 12 SkyRun 100 checkpoints pre-loaded. Enter your goal finish time to get estimated arrival times at every aid station.
Full SkyRun 100 course data: aid stations, cutoffs, course profile
Enter a goal SkyRun 100 finish time and get estimated arrival times at every checkpoint - 99.2 km with around 3,897 m of climbing, with crew and drop-bag points flagged.
Starting estimate based on the cutoff, not on published finish times. Replace it with your own goal.
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 (12)
| 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 04:00 | - | - | - | - | - |
| CP1 Towerlikely hiking (pace) | 6.6 | +799 | 15.2 | 2:17:56 | Sat 06:17 | Sat 06:00 | -18 min | Sat 05:40Set by CP4 Avoca | 2:17:56 | 20:54 |
| CP2 Olympuslikely hiking (pace) | 18.8 | +573 | 21.5 | 5:33:42 | Sat 09:33 | Sat 09:00 | -34 min | Sat 08:55Set by CP4 Avoca | 3:15:47 | 16:03 |
| CP3 Snowdenlikely hiking (pace) | 29.6 | +423 | 16.7 | 8:05:20 | Sat 12:05 | Sat 11:30 | -35 min | Sat 11:27Set by CP4 Avoca | 2:31:38 | 14:02 |
| CP4 Avocalikely hiking (pace) | 39.9 | +444 | 16.8 | 10:37:51 | Sat 14:37 | Sat 14:00 | -38 min | Sat 14:32Set by CP5 Skidaw | 2:32:31 | 14:48 |
| CP5 Skidawlikely hiking (pace) | 47.1 | +208 | 12.9 | 12:35:04 | Sat 16:35 | Sat 16:30 | -5 min | Sat 16:42Set by CP6 Balloch (in) | 1:57:13 | 16:17 |
| CP6 Balloch (in)likely hiking (pace) | 56.3 | +152 | 15.1 | 14:52:07 | Sat 18:52 | Sat 19:00 | 8 min | Sat 19:53Set by CP6 Balloch (out) | 2:17:03 | 14:54 |
| CP6 Balloch (out)likely hiking (pace) | 56.7 | +15 | 0.7 | 14:58:49 | Sat 18:58 | Sat 20:00 | 1h01 | Sat 21:35Set by CP7 Edgehill | 0:06:42 | 16:45 |
| CP7 Edgehilllikely hiking (pace) | 66.4 | +223 | 15.9 | 17:23:40 | Sat 21:23 | Sun 00:00 | 2h36 | Sun 01:43Set by CP9 Halstone Peak | 2:24:50 | 14:56 |
| CP8 The Turnlikely hiking (pace) | 82.3 | +571 | 23.2 | 20:54:54 | Sun 00:54 | Sun 06:00 | 5h05 | Sun 05:14Set by CP9 Halstone Peak | 3:31:15 | 13:17 |
| CP9 Halstone Peaklikely hiking (pace) | 94.0 | +300 | 18.2 | 23:40:31 | Sun 03:40 | Sun 08:00 | 4h19 | Sun 08:10Set by Finish - Wartrail Country Club | 2:45:37 | 14:09 |
| Finish - Wartrail Country Clublikely hiking (pace) | 99.2 | +189 | 12.0 | 25:30:00 | Sun 05:30 | Sun 10:00 | 4h30 | - | 1:49:29 | 21:03 |
CP1 Towerlikely hiking (pace)
Sat 06:17Cutoff Sat 06:00-18 minBehind cutoff
Leave by Sat 05:40Set by CP4 Avoca
- Dist (km)
- 6.6
- D+ (m)
- +799
- Seg time
- 2:17:56
- Seg pace/km
- 20:54
CP2 Olympuslikely hiking (pace)
Sat 09:33Cutoff Sat 09:00-34 minBehind cutoff
Leave by Sat 08:55Set by CP4 Avoca
- Dist (km)
- 18.8
- D+ (m)
- +573
- Seg time
- 3:15:47
- Seg pace/km
- 16:03
CP3 Snowdenlikely hiking (pace)
Sat 12:05Cutoff Sat 11:30-35 minBehind cutoff
Leave by Sat 11:27Set by CP4 Avoca
- Dist (km)
- 29.6
- D+ (m)
- +423
- Seg time
- 2:31:38
- Seg pace/km
- 14:02
CP4 Avocalikely hiking (pace)
Sat 14:37Cutoff Sat 14:00-38 minBehind cutoff
Leave by Sat 14:32Set by CP5 Skidaw
- Dist (km)
- 39.9
- D+ (m)
- +444
- Seg time
- 2:32:31
- Seg pace/km
- 14:48
CP5 Skidawlikely hiking (pace)
Sat 16:35Cutoff Sat 16:30-5 minBehind cutoff
Leave by Sat 16:42Set by CP6 Balloch (in)
- Dist (km)
- 47.1
- D+ (m)
- +208
- Seg time
- 1:57:13
- Seg pace/km
- 16:17
CP6 Balloch (in)likely hiking (pace)
Sat 18:52Cutoff Sat 19:008 minTight
Leave by Sat 19:53Set by CP6 Balloch (out)
- Dist (km)
- 56.3
- D+ (m)
- +152
- Seg time
- 2:17:03
- Seg pace/km
- 14:54
CP6 Balloch (out)likely hiking (pace)
Sat 18:58Cutoff Sat 20:001h01Tight
Leave by Sat 21:35Set by CP7 Edgehill
- Dist (km)
- 56.7
- D+ (m)
- +15
- Seg time
- 0:06:42
- Seg pace/km
- 16:45
CP7 Edgehilllikely hiking (pace)
Sat 21:23Cutoff Sun 00:002h36
Leave by Sun 01:43Set by CP9 Halstone Peak
- Dist (km)
- 66.4
- D+ (m)
- +223
- Seg time
- 2:24:50
- Seg pace/km
- 14:56
CP8 The Turnlikely hiking (pace)
Sun 00:54Cutoff Sun 06:005h05
Leave by Sun 05:14Set by CP9 Halstone Peak
- Dist (km)
- 82.3
- D+ (m)
- +571
- Seg time
- 3:31:15
- Seg pace/km
- 13:17
CP9 Halstone Peaklikely hiking (pace)
Sun 03:40Cutoff Sun 08:004h19
Leave by Sun 08:10Set by Finish - Wartrail Country Club
- Dist (km)
- 94.0
- D+ (m)
- +300
- Seg time
- 2:45:37
- Seg pace/km
- 14:09
Finish - Wartrail Country Clublikely hiking (pace)
Sun 05:30Cutoff Sun 10:004h30
- Dist (km)
- 99.2
- D+ (m)
- +189
- Seg time
- 1:49:29
- Seg pace/km
- 21:03
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 SkyRun 100
SkyRun 100 covers 99.2 km with around 3,897 m of elevation gain, starting in Lady Grey, South Africa. The overall cutoff is 30 hours.
Crew access is allowed at CP6 Balloch (in) (56.3 km) and CP6 Balloch (out) (56.7 km). Drop bags are available at CP6 Balloch (in) and CP6 Balloch (out).
Checkpoint data approximate - verify against the current official race guide at skyrun.co.za 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
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