Mantasoa, Madagascar · Saturday, May 9, 2026

Fixed Distance 50 mi

Semi Trail des Ô Plateaux

Race completed
70 km Distance
2,760 m Climbing
7.6 Grit · Hardcore
19.0167° S, 47.8333° E© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 39 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.
Time limit 17 hours 14:34 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 85% of 50 mi races. Measured against 486 races of the same distance. Cut-off calculator →
Field size ~40 Small. Long stretches with nobody in sight.

DUV results for the 2025 edition (70km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, May

Daytime high 21°C
Night low 14°C
Rainfall Wet — expect rain
Daylight 11 h 19 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 993 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a rolling course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert
👟 gear

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

By UltraHub Expert

Gear for this race

Chosen for 70 km of trail with 2,760 m of ascent.

All gear guides →

Course Notes

Mantasoa - Tana.

Similar races

Other 50 mi trail ultras, closest in distance first.