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Black Toenail Friday Half Marathon and 7.5 Miler

Fri November 28, 2025 Commerce Township, MI 48382 US Directions

Participant Referral Incentives

Black Toenail Friday Half Marathon and 7.5 Miler offers a referral code program. This is a fun & easy way to get your friends to sign up to race with you, plus you get a little money back on your registration fee!

Referral incentives

  • 7.5 Mile Participants: Refer 5 people who sign up to race and you get a $15 race registration refund
  • Half Marathon Participants: Refer 5 people who sign up to race and you get a $20 race registration refund

How does this work? Share your specific referral code link that you were given when you signed up to race. Once you get the above-mentioned people to register using your code, you will get your registration refund. Start sharing your link today!

You can also locate your personal referral link by clicking this link for instructions.

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