Helsinki City Running Day Half Marathon

Helsinki, Finland · May 8, 2027·
partly-cloudy-day43°·43° high·Breezy·Dry
10
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Race Day Weather

partly-cloudy-day
43°at start
43° high
Breezy
Dry
Your goal
0:00:00

Cool start — fast day potential, moderate wind

A cool 43°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Moderate winds around 12mph may affect pacing on open sections of the course. Moderate humidity at 77% is worth noting for effort level, especially in later miles.

Race day forecast available in 189 days
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Pace Calculator

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Race Plan

Get your personalized Helsinki City Running Day Half Marathon 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 Helsinki City Half Marathon is the largest half marathon in Finland and an AIMS-certified course. It starts on Mäntymäentie by the Olympic Stadium, runs south along Mannerheimintie past the National Museum, Parliament House and the Music Centre, then drops onto the Baana path and heads west along the seaside through Lauttasaari and Lehtisaari. The race finishes inside the Olympic Stadium through the Marathon Gate, on the Saturday of race weekend.

Race weekend

Friday, May 7
5:00 PMMinimarathon (0.6 mi)
8:00 PM5K (3.1 mi)
Saturday, May 8
9:30 AMMarathon (26.2 mi)
9:30 AMMarathon Relay (26.2 mi)
9:30 AMDouble (39.3 mi)
2:20 PMHalf Marathon (13.1 mi)
Area Map

Course Map

FAQ

When is the 2027 Helsinki City Running Day Half Marathon?

The 2027 Helsinki City Running Day Half Marathon will be held on Saturday May 8, 2027.

What is the time limit for the Helsinki City Running Day Half Marathon?

The time limit for the Helsinki City Running Day Half Marathon is 3 hours.

What will the weather be like for the 2027 Helsinki City Running Day Half Marathon?

The forecast calls for a high of 45°F and a low of 41°F with a 6% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 24 years of data
Avg Temp
56°F
L:55° H:57°
RunScore
9
Conditions
Rain Freq
8%
2 of 24 yrs
Wind11mph
Dew37°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
61°/64°-
8
2025
clear-day
53°/53°-
10
2024
clear-day
57°/58°-
10
2023
clear-day
65°/66°-
7
2022
clear-day
54°/55°-
10
2021
partly-cloudy-day
53°/54°-
10
2020
partly-cloudy-day
58°/58°-
8
2020
partly-cloudy-day
41°/47°Light
10
2019
clear-day
67°/68°-
6
2018
clear-day
64°/65°-
7
2017
clear-day
50°/51°-
10
2016
rain
52°/53°Light
10
2015
partly-cloudy-day
52°/54°-
10
2014
clear-day
52°/54°-
10
2013
clear-day
50°/52°-
10
2012
partly-cloudy-day
46°/50°-
10
2011
clear-day
54°/55°-
10
2010
partly-cloudy-day
46°/49°-
10
2009
clear-day
51°/55°-
10
2008
clear-day
69°/70°-
7
2007
clear-day
53°/54°-
10
2006
clear-day
58°/61°-
9
2005
clear-day
56°/59°-
10
2004
partly-cloudy-day
51°/53°-
10