Guide

Races in May 2027

4 races land in May 2027. We'd tell you now which ones are already a lottery you've missed and which still have entries open.

Denver Colfax MarathonMay 2027Denver · US
RunningMarathon · Half marathon · 5K

Colfax Marathon

Difficulty 55

Open · Direct entryRace guide →
Sanlam Cape Town MarathonMay 2027Cape Town · ZA
RunningMarathon

Cape Town Marathon

Difficulty 26

Closed · LotteryRace guide →
adidas Stockholm MarathonMay 2027Stockholm · SE
RunningMarathon

Stockholm Marathon

Difficulty 25 · PR 66

Sold out · Direct entryRace guide →
BOLDERBoulder 10KMay 2027Boulder · US
Running10K

BOLDERBoulder

Difficulty 55

Open · Direct entryRace guide →

Related guides

Races in December 2026Races in January 2027Races in February 2027Races in March 2027