The 2026 Silesia Ultramarathon has concluded.Share your finish

Silesia Ultramarathon

Race complete
Chorzów, Poland · October 4, 2026·
clear-day36°·66° high·Breezy·Dry
8
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Race Day Weather

clear-day
36°at start
70° high
Breezy
Dry
Your goal
0:00:00

Cold start — layer up, big temp swing

Runners will start in chilly 36°F conditions — dress in layers for the corral and plan to shed early. Temps will climb significantly to 70°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.

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Pace Calculator

31.1mi
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Race Plan

Get your personalized Silesia Ultramarathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

The Silesia Ultramarathon is a 50 km road race that starts and finishes at the Silesian Stadium in Chorzów. The certified route leaves Park Śląski, crosses Katowice and loops out toward the eastern side of the Upper Silesian conurbation before coming back to the stadium. Refreshment points are spaced along a course that stays on paved city streets and park roads with only modest hills. It is held on the Sunday of race weekend, starting before the marathon.

Race weekend

Friday, October 2
6:00 PM5K (3.1 mi)
Saturday, October 3
11:00 AM10K (6.2 mi)
Sunday, October 4
7:30 AMUltramarathon (31.1 mi)
8:00 AMMarathon (26.2 mi)9:45 AMHalf Marathon (13.1 mi)

FAQ

When is the 2026 Silesia Ultramarathon?

The 2026 Silesia Ultramarathon will be held on Sunday October 4, 2026.

What is the time limit for the Silesia Ultramarathon?

The time limit for the Silesia Ultramarathon is 6.25 hours.

What will the weather be like for the 2026 Silesia Ultramarathon?

The forecast calls for a high of 70°F and a low of 36°F with a 0% chance of rain. Check our detailed hourly forecast above for the best 50K race plan.

Historical Weather

Based on 8 years of data
Avg Temp
52°F
L:46° H:57°
RunScore
9
Conditions
Rain Freq
25%
2 of 8 yrs
Wind6mph
Dew46°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
36°/66°-
8
2025
partly-cloudy-day
44°/52°-
9
2024
cloudy
48°/51°-
10
2023
partly-cloudy-day
46°/58°-
9
2022
partly-cloudy-day
52°/59°Light
9
2021
partly-cloudy-day
44°/64°-
8
2020
partly-cloudy-day
59°/65°Light
6
2019
cloudy
42°/44°-
10