RacesFilter

Cool-weather marathons

Cool means the Open-Meteo median high, for the race date plus or minus 7 days across 2011–2025, is 16°C or lower. Dew point can still make the difficulty heat score warmer than this list implies.

How the difficulty and PR scores are built

Tokyo MarathonMarch 2027Tokyo · JP
RunningMarathon

Tokyo Marathon

Difficulty 19

Closed · LotteryRace guide →
Zurich Marató BarcelonaMarch 2027Barcelona · ES
RunningMarathon

Barcelona Marathon

Difficulty 18

Open · Direct entryRace guide →
Schneider Electric Marathon de ParisApril 2027Paris · FR
RunningMarathon

Paris Marathon

Difficulty 22

Open · Direct entryRace guide →
Boston MarathonApril 2027Boston · US
RunningMarathon

Boston Marathon

Difficulty 22 · PR 83

Closed · QualifierRace guide →
TCS London MarathonApril 2027London · GB
RunningMarathon

London Marathon

Difficulty 22

Closed · LotteryRace guide →
Big Sur International MarathonApril 2027Big Sur · US
RunningMarathon

Big Sur Marathon

Difficulty 32 · PR 33

Closed · LotteryRace guide →
Reykjavik MarathonAugust 2027Reykjavik · IS
RunningMarathon

Reykjavik Marathon

Difficulty 22

Details not announcedRace guide →
TCS New York City MarathonNovember 2027New York · US
RunningMarathon

NYC Marathon

Difficulty 21 · PR 63

Open · QualifierRace guide →
Swedbank Tallinn Marathon2027 · date TBATallinn · EE
RunningMarathon

Tallinn Marathon

Details not announcedRace guide →