Niedamirow, Poland · Saturday, August 8, 2026

Fixed Distance 100K

NiedamiRun - Ultramarathon Sudecki 100km

Race completed

96 km Distance

3,970 m Climbing

10.0 Grit · Elite / extreme

50.6902° N, 15.8795° E © 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 11:15 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 66% of 100K races. Measured against 214 races of the same distance. Cut-off calculator →

Field size ~16 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (96km) — 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 24°C

Night low 13°C

Rainfall Mostly dry

Daylight 15 h 00 m of light

Regional 2001-2020 average for August — NASA POWER, grid elevation 456 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	96km	16	Alban Bazoge · 10:54:19	Liliana Zmija · 11:55:37

19% of the 2025 field were women.

DUV results for the 2025 edition (96km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

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

Gear for this race

Chosen for 96 km of trail with 3,970 m of ascent.

Trail Running Shoes 41 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 96 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 3,970 m of ascent to walk up.
Headlamps A 18 h limit puts you out there after dark.

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

Salomon

Aero Glide 4 Grvl

$159.95 ★★★★★ 4.5

Tailwind

Endurance Fuel

All-in-one calorie and electrolyte drink mix. 200 calories per serving.

$25 ★★★★★ 4.8

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

LEKI

Ultratrail FX.One

Ultra-light carbon folding poles (135g each) designed for mountain ultra racing.

$200 ★★★★★ 4.6

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

All gear guides →

Overview

The NiedamiRun - Ultramarathon Sudecki 100km, a trail race through Niedamirow, Poland, offers a 96 km course with 3970 meters of elevation gain, equating to 41.4 meters of climb per kilometer. This is a newer event, with its first running in 2025.

With an 18-hour time limit, the 11.3 minutes per kilometer cutoff pace is tighter than 34% of 100k races. The field size of 16 finishers in its first edition was smaller than 28% of its peer group of 314 100k races. Entry fees range from 225-305 Zl.

Similar races

Other 100K trail ultras, closest in distance first.