Southern Morocco, Morocco · Sunday, January 10, 2027

Fixed Distance 100K

Marathon Des Sables Ultra (MDS) 100km

56 days away
100 km Distance
582 m Climbing
5.9 Grit · Challenging
30.3764° N, 9.5529° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 6 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Time limit 40 hours 24:00 min/km average. Generous. Walkable throughout for most of the field. Among the most forgiving 100K cut-offs we track. Measured against 238 races of the same distance. Cut-off calculator →
Field size ~88 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2026 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, January

Daylight 10 h 19 m of light

Results history

Year Race Finishers Men's winner Women's winner
2026 100km 88 Sergio Turull Serratosa · 11:53:27 Adriana Moser · 12:22:43

35% of the 2026 field were women.

DUV results for the 2026 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

  • terrain This is a fast & flat course. Expect fast, runnable sections where rhythm is key.
  • gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
  • nutrition For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

Gear for this race

Chosen for 100 km of trail with 582 m of ascent.

  • Trail Running Shoes 100 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
  • Hydration Vests Flask capacity for 100 km, without the bounce.
  • Headlamps A 40 h limit puts you out there after dark.
  • Accessories Chafe and blisters end more 100 km races than fitness does.
All gear guides →

Similar races

Other 100K trail ultras, closest in distance first.