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2021 May Challenge

2020 may challenge logo shadow

We challenge you to run or walk at least 1 mile each day in May. Both outdoor and indoor miles count. 100% of proceeds to charity!

12:00 AM, Sat. May 1, 2021 to 12:00 AM, Mon. May 31, 2021

Race / Category
Prizes / Awards
No surprise fees - what you see is what you pay, service fee included
12:00 AM
Create a team & recruit others
This event has already taken place and registration ended on May 31, 2021 at 12:00 AM.

From the Organizer

May 1st-5th are "warm up" days--nobody gets DQ'd!

Different levels available to challenge everyone!

You can challenge yourself to any level, and can change your mind at anytime because you don't have to indicate the level when signing up. You can start on a higher level, and drop down to a lower level if you can't hit the daily mileage.  But, if you miss a day, you’re out!

-- Bronze = run/walk 1 mile/day

-- Silver = run/walk 3 miles/day

-- Gold = run/walk 5 miles/day

For each level, you must run the minimum mileage every day, not just averaging that mileage. So if you run 5+ miles for 30 days, and 1 mile for 1 day, you will finish at the Bronze Level due to that 1 day of lower mileage. Each level is determined by your actual daily mileage, not your average daily mileage. The app tracks your daily total, so if you run three miles in the morning and another three miles in the evening, you'll have six miles for that day and qualify for the gold level.

Invite your friends with your Sharelink

Use your Sharelink (you'll get this after registering) when inviting friends and family so that you can track your referrals. We have sweet prizes for our top influencers:

100% of proceeds to charity!

The 2021 May Challenge is produced by Boston's RACE Cancer Foundation and will raise thousands of dollars to battle cancer. 

Log your runs on our Raceday iOS app or on Raceday-web from any web browser. 

You will have two ways to log runs, either via a mobile website (Raceday web version) which can be accessed from any web browser at, or via RaceMenu's Raceday iOS mobile app which you can download from the App Store or by visiting (note: if you have an older version of Raceday on your phone, you'll need to update to v2.3.11 or later)