Chelmsford Marathon

Chelmsford, England, UK · October 10, 2027·
partly-cloudy-day55°·59° high·Breezy·Dry
7
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Chelmsford Marathon race day weather

partly-cloudy-day
55°at start
60° high
Breezy
Dry
Your goal
0:00:00

Comfortable temps, moderate wind

Mild 55°F temps at gun time mean comfortable early miles without overheating risk. Moderate winds around 14mph may affect pacing on open sections of the course. Moderate humidity at 79% is worth noting for effort level, especially in later miles.

Race day forecast available in 315 days
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Pace Calculator

26.2mi
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Race Plan

Get your personalized Chelmsford 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

About the Chelmsford Marathon

The Chelmsford Marathon is a single-lap road race that starts and finishes in Central Park, Chelmsford, Essex, running through the park's tree-lined avenues and out into the surrounding Essex countryside. A half marathon runs an out-and-back course on the same morning, starting half an hour after the marathon's 9:00 AM gun. The race has run each October since at least 2016 and raises funds for Little Havens Children's Hospice.

Race weekend

Sunday, October 10
9:00 AMMarathon (26.2 mi)
9:30 AMHalf Marathon (13.1 mi)

Chelmsford Marathon FAQ

When is the 2027 Chelmsford Marathon?

The 2027 Chelmsford Marathon will be held on Sunday October 10, 2027.

Is the Chelmsford Marathon a Boston Marathon Qualifier?

Yes, the Chelmsford Marathon is an official Boston Marathon qualifier.

What is the time limit for the Chelmsford Marathon?

The time limit for the Chelmsford Marathon is 6 hours.

What will the weather be like for the 2027 Chelmsford Marathon?

The forecast calls for a high of 60°F and a low of 52°F with a 10% chance of rain.

What is the weather usually like for the Chelmsford Marathon?

Over the 12 years racecast.io has race-day weather for (2014 to 2026), it averaged 52°F at the start and 58°F by a typical finish. Rain fell during race hours in 6 of those years.

What was the hottest Chelmsford Marathon?

Of the 12 years on record, 2017 was the warmest, reaching 64°F during race hours. The coldest start was 2023, at 41°F.

What was the windiest Chelmsford Marathon?

Of the 12 years on record, 2014 was the windiest, with wind averaging 16 mph during race hours. The calmest was 2025, at 4 mph.

Chelmsford Marathon weather history

Based on 12 years of data
Avg Temp
55°F
L:52° H:58°
RunScore
8
Conditions
Rain Freq
50%
6 of 12 yrs
Wind10mph
Dew49°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
48°/59°-
9
2025
cloudy
50°/56°-
9
2024
clear-day
44°/50°-
10
2023
clear-day
41°/48°-
10
2022
clear-day
52°/60°-
8
2021
partly-cloudy-day
53°/58°Light
8
2019
partly-cloudy-day
57°/62°Light
6
2018
cloudy
57°/58°Light
7
2017
clear-day
57°/64°Light
6
2016
cloudy
54°/61°Light
7
2015
partly-cloudy-day
50°/55°-
9
2014
partly-cloudy-day
61°/64°Light
6