All runners will receive a long sleeve shirt. 


Free parking will be available in the Clayton High School parking lot or at the garage located in the center of the Forsyth, Maryland and Brentwood Avenue. We recommend everyone enter the lot on the north side, turning in off Maryland Ave. After the run, the exit gate at the attendant booth will be left open, so people can pull a ticket at any entrance when they arrive, but exit on the 3rd level attendant booth as the gate will be open. ​There will also be street parking available. 

Dogs and strollers
​Dogs that are on leashes and strollers are allowed. We just request that you lineup at the back of the start so as not to impede the runners.

All runners will receive a finisher's medal. We will have a post race celebration inside Clayton High School including snacks, live music and more!

Awards will be presented to the top three overall males and females in the individual half marathon as well as the top three in the male and female age groups: 13-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70 and over. Awards will ​also be presented to the top male, female and mixed teams who run in the relay.

We invite everyone to wear their craziest socks on March in honor of World Down Syndrome Day

2018 race Information

Date: Sunday, March 25, 2018
Time: 7:30 am start for the 13.1M and 7K runs and walk
Location: Clayton High School (1 Mark Twain Circle, Clayton, MO 63105)

Packet Pick-Up & Race Weekend Registration:
Registration and packet pickup are:
- 10am-8pm Friday, March 23, at Fleet Feet ​Sports in Des Peres
- 10am-5pm Saturday, March 24, at Fleet Feet Sports in Des Peres
- Sunday, March 25, before the race 

Fleet Feet Sports is located at 11731 Manchester Rd, Des Peres, MO 63131.

Start/Finish Village and Course
The Commons inside Clayton High School will be open to all participants before, during, and after the race! Runners
will be able to stay warm, use the bathrooms, and partake in post-race food and festivities.

Start/finish village and course for 2018 Relay & Run for 21 is a three-loop course in Clayton
and University City measured to USATF standards.

7K: The 7k takes place on the first loop with the start, finish, and relay exchange point all located on
Mark Twain Circle at Clayton High School.

Half Marathon and Relay: Complete all three loops for a half marathon (21k) ​or do it in teams of two or three
  people. Relay teams, feel free to bring your tents, we have lots of "tailgate" area!  The half marathon course
  includes road, greenway, park, residential, city running, and 8 water stations.

Registration and professional timing by Fleet Feet St Louis
2018 registration is available at

Registration Pricing Chart
Half Marathon$55$65$75$85
2.1K Fun Run/Walk$20$25$30$35

Half Marathon

3-person relay