Your race.
Every condition.
Know the course. Read the weather. Arrive at the start line with a plan for the day you actually get.
Find your raceFree race guides. No account needed.
Manchester Half
4 October 2026 · Manchester, United Kingdom
Race weather guides
Manchester Half
Manchester, United Kingdom
Cologne Marathon
Cologne, Germany
Chicago Marathon
Chicago, United States
Amsterdam Marathon
Amsterdam, Netherlands
Toronto Waterfront Marathon
Toronto, Canada
Dublin Marathon
Dublin, Ireland
Houston Half Marathon
Houston, United States
New York City Marathon
New York, United States
Philadelphia Half Marathon
Philadelphia, United States
Philadelphia Marathon
Philadelphia, United States
Valencia Marathon
Valencia, Spain
Dallas Marathon
Dallas, United States
Dallas Half Marathon
Dallas, United States
Austin International Half Marathon
Austin, United States
Austin Marathon
Austin, United States
Austin Half Marathon
Austin, United States
Tokyo Marathon
Tokyo, Japan
Los Angeles Marathon
Los Angeles, United States
Rome Marathon
Rome, Italy
Berlin Half Marathon
Berlin, Germany
Vienna City Marathon
Vienna, Austria
Vienna Half Marathon
Vienna, Austria
Manchester Marathon
Manchester, United Kingdom
Boston Marathon
Boston, United States
London Marathon
London, United Kingdom
Edinburgh Half Marathon
Edinburgh, United Kingdom
Edinburgh Marathon
Edinburgh, United Kingdom
Sydney Marathon
Sydney, Australia
Berlin Marathon
Berlin, Germany
Chicago Half Marathon
Chicago, United States
Warsaw Marathon
Warsaw, Poland
A curated starting line-up, with dates checked against organisers. More guides are on the way. Suggest a race ↗
A forecast when it matters.
Perspective before it arrives.
Within 15 days of race day, each guide checks for an hourly forecast. Further out, five years of sampled race-window weather help you prepare. Every guide labels what is historical and links to its sources.
The course is only half the story.
A flat course can still feel demanding in warm air or a headwind. Explore the route, understand the conditions, and use a goal pace as a starting point for your plan.
How RunWeather reads the conditionsTake the weather with you.
RunWeather brings running forecasts and race planning to your phone, so your plan can move with the conditions.