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100K and 50K Solo Road Races

The 50K Solo will be the 2025 USATF 50K Championships on the USATF certified course for 2025. The winning time MUST be within the qualifying time standards stated on the 2025 50K Selection document. Remember you must be a USATF Member for this to apply.


The 100K Solo race starts at 6:30AM (Sunrise) on April 20 2024. The course will be open until 8:00PM, or 13.5 hours.  For the safety of the runners and to ensure a timely wrap-up, any runner crossing the Start/Finish for Lap 9 after 7:00PM will be strongly encouraged to skip the final Lap.


Any runner who feels they may need more time to finish the 100K solo in the allotted time will have the option to start early. Starting early does eliminate you from any awards.

Top 5 Overall Female and Male winners of the 50K are eligible for the evenly dispersed prize purse. Please see the Medal and Awards page for details

  • View the USATF Team Qualifying Standards here.

Both the 100K and 50K Solo will once again be a USATF sanctioned course for 2025. Runners' 100K finish times will be valid in consideration for invitation to join Team USA.

The 50K Solo race starts at 8:00AM on April 12 2025.

USATF Membership

Membership in the USATF is not required to enter the MadCity Solo races. However USATF membership is required to be declared a USATF National Champion for any race designated as the annual USATF National Championship.

To learn more about the USATF and membership, visit the website.

Athletes who participate in National Championships and Team USA competitions are subject to drug testing performed by the U.S. Anti-Doping Agency (USADA) in accordance with the USADA Protocol for Olympic and Paralympic Movement Testing.

Solo Race Rules

The MadCity Solo races adhere to the USATF Road Race rules. A complete set of rules is located on the Rule Book on the USATF web site.

The MadCity Solo runners may drop their bags containing gear and nutrition prior to the race to be transported to the aid station inside the arboretum.


100K Solo Course Record Holder.

Camille Herron

100K Solo Course Record Holder.

Geoff Burns.


Race HQ

Vilas Park Shelter

In 2025 the MadCity race will host the race headquarters at the Vilas Park Shelter and will feature the traditional course counter clockwise around the UW Arboretum. Vilas Park is convenient to many area hotels and provides a great venue for runners and spectators.



All events are 100% paved road surface as required by the USATF. Both the solo events are certified through all organizations making it eligible for AG, WR, and overall records.

Check out the links to MapMyRun maps below for the details. 


100K and 50K Relay Races

Anyone can be a Relay Team Captain! To register a team, the Captain can sign up on the registration site, providing his/her name, team name and contact information. 

On the RunSignUp registration site the Team Captain must establish a password for team members to use during registration. 

Team Members

Once your Captain is registered, your team will be available to join via the registration site. This makes it easy to assemble your team and for us to determine the sum-of-the-ages grouping. Your Team Captain will tell you the team name and password, then the members register for free. Separately you can reimburse your Captain as you've agreed.


And yes, we know that team membership can change right up to race day and we're prepared to accommodate your changes. It's important that every participating team member use the registration site so that we can get the correct age and have everyone sign the waiver form. 

Contact your Team Captain to know the team name and password that they have selected!

Relay Teams and Awards

Relay teams can be 2-5 members.  Top team awards typically involve a sufficient quantity of fermented beverage to make it worth your effort!

Age-group Relay categories (top team):

  • 125 or younger

  • 126-150

  • 151-175

  • 176-200

  • 201-250

  • 251-299

  • 300 and older

The age-based awards are determined using the sum-of-the-ages of your relay team, counting each runner's age x # of laps.

Relay Race Rules

Here are the simple rules for participating in the MadCity 50K and 100K Relay.

  • The total race distance is 50K and 100K

    • Age-based teams must be comprised of 2-5 runners, and each runner must run at least one 10K loop of the course. 

    • Two-person and four-person teams must decide who will run the extra loop(s). 

  • Each team is provided with one relay baton, and the baton must be carried by the relay team member who is currently racing on the course.

  • Each team is provided with an ankle-band chip and the chip must be worn by the relay team member who is currently racing on the course.

  • Handoff of the relay baton and ankle-band chip must occur in the Start/Finish area. Some skill is needed to perform this gracefully!

  • Handoff must occur past the chute area to the right side of the course to avoid interfering with Solo runners.

  • All Relay Team members need to register, select the team, provide their age and agree to the waiver. Captains, please contact your team members to ensure they've registered for your team before race day!

  • Sorry but we cannot allow strollers or dogs in the Relay race due to the congestion at the Start/Finish handoff area. Also dogs are not permitted in the Arboretum.


Our race is famous for the outstanding volunteers from the greater Madison area who help make this a favorite race of solo and relay runners year after year.

We need volunteers for the following shifts:

  • Day Before

    • 1:30-5:30PM Packet Pickup

  • Race Day

    • 6AM - 9:30AM

    • 9:30AM - 1PM

    • 1PM - 4:30PM

    • 4:30PM - 8PM

Volunteer Opportunities

We need volunteers for the following areas:

  • Packet Pickup

  • Course Monitor

  • Course Direction

  • Aid Stations

  • Clean Up

  • Bike Lead for each event

View all of the opportunities and sign up today on the RunSign Up site!



Here are answers to some questions you might have:

Why is the 100K race held every other year?

MadCity aligns our race schedule with the World IAU 100K Championships. Winners and qualifiers of the MadCity 50K may be eligible to compete for Team USA in the World Championships held later in the year.

Our Relay Team needs to change one or more members - how can we do that?

The Team Captain can send an email to with your team name and information about the changes and we'll work with you to update the members. Remember that each Team member needs register with the Team so that they sign the waiver and enter their information so we can't just change a name!

Can my business support MadCity through a sponsorship?

Yes! Just complete this form and we'll follow up with you.

Have a question? Just use the Contact form and we'll try to answer quickly.

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