Aviemore, United Kingdom · Saturday, August 15, 2026

Fixed Distance 100K

Speyside Way Ultra 100km

Race completed
100 km Distance
4,080 m Climbing
10.0 Grit · Elite / extreme
57.1955° N, 3.8259° W© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 41 m / km Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 18 hours 10:48 min/km average. Generous. Walkable throughout for most of the field. About average for a 100K. Measured against 208 races of the same distance. Cut-off calculator →
Field size ~13 Tiny. You will run alone for most of it.

DUV results for the 2023 edition (65mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, August

Daytime high 14°C
Night low 8°C
Rainfall Showers likely
Daylight 15 h 20 m of light

Regional 2001-2020 average for August — NASA POWER, grid elevation 535 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a mountain course. Poles are highly recommended for the sustained climbs.

By UltraHub Expert
👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert
🥤 nutrition

For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

By UltraHub Expert

Gear for this race

Chosen for 100 km of trail with 4,080 m of ascent.

  • Trail Running Shoes41 m of climb per kilometre — grip and rock protection before cushioning.
  • Race NutritionPast 100 km the palate quits before the legs do — carry more than one flavour.
  • Hydration VestsPole attachment and chest-strap stability on steep ground.
  • Trekking Poles4,080 m of ascent to walk up.
  • HeadlampsA 18 h limit puts you out there after dark.
All gear guides →

Course Notes

The full route follows the entire Speyside Way (without the extension!) from Aviemore to Buckie.

Similar races

Other 100K trail ultras, closest in distance first.