SwissPeaks Legend Aid Station Planner

SwissPeaks Trail - Legend covers 397 km with around 27,530 m of elevation gain, starting in Brigerbad, Valais, Switzerland. The overall cutoff is 159 hours.

Crew access is allowed at Belalp (15 km), Bettmeralp (29 km), Fiesch (life base) (51 km), Chaserstatt (58 km), Binn (71 km), Fleschboden (86 km), Giw (108 km), Eisten (life base) (120 km), Grächen - Zum See (129 km), Bluomatt (153 km), Grimentz (life base) (172 km), Evolène (191 km), Thyon 2000 (life base) (219 km), Lourtier (246 km), Prassurny (275 km), Col de la Forclaz - Plan Creux (293 km), Salvan (life base) (306 km), Barme (330 km), Chaux Palin (341 km), Morgins (life base) (351 km), Torgon (363 km), Taney (376 km) and Le Grand Pré (386 km). Drop bags are available at Fiesch (life base), Eisten (life base), Grimentz (life base), Thyon 2000 (life base), Salvan (life base) and Morgins (life base).

Checkpoint data approximate - verify against the current official race guide at swisspeaks.ch before your race.

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