15.5 Hour

Summer Solstice Challenge

Saturday, June 27, at 5:09 a.m.

Shorewood Golf Course

UW Green Bay

The Summer Solstice Challenge starts at sunrise (5:09 a.m.) and will end at sunset (8:41 p.m.) for a 15.5 hour event. Results will be calculated based on how many loops you can run in that time! Laps will be counted for each competitor, and information about each runner’s progress will be available during the run. Runners may stop to rest and restart running as they please.

Registration opens November 29, 2019.


15.5 Hour - Pricing

Nov. 29 -  Dec 31 : $125

 Jan. 1 -  March 31 : $135

April 1 -  June 24 : $150

*Online registration closes June 24 at 10 p.m. There is no race day registration.

Schedule of Events

Friday, June 26, 2020

3-6 p.m. - Packet Pickup and Registration*

at the Start/Finish Line located at Shorewood Golf Course, 2420 Nicolet Dr, Green Bay, Wisconsin.

Saturday, June 27, 2020

3:30-5 a.m. - Packet Pickup and Bag Drop**

at the Start/Finish Line at Shorewood Golf Course, 2420 Nicolet Dr, Green Bay, Wisconsin.

*There is NO race-day registration!!

**Bag drop is on Saturday only at Start/Finish area.

5:09 a.m. - Race Start

8:41 p.m. - Course closes

Event Details


University of Wisconsin Green Bay Campus. 2420 Nicolet Dr, Green Bay, Wisconsin. We will start in the Parking Lot at Shorewood Golf Course.

The Course:
We will be running a 4.75 mile loop around the UWGB campus. The trail consists of sections of crushed limestone (45%), wood chips (50%) and asphalt (5%). The wood chipped sections contain some hilly portions, but are easy on the legs.















Start Time: 5:09AM - 15.5 Hour runners will start at the same time as the 8 Hour and 6 Hour runners.

Aid Stations / Food: This is a GREEN event!
Each participant is required to carry a water bottle/hydration pack. We will provide Tailwind and water on the course. There will be some great ultra staples available at the start/finish line. You will pass this point every 4.75 miles.


  • Aid Station 1 is at mile .9 - Will have water/Tailwind AND our famous watermelon!

  • Aid Station 2 is at mile 2.6 - Will have water/Tailwind as well as towels for you to soak in ice water.

  • Start/Finish Aid Station is at Mile 4.75 - Will be stocked with the usual assortment of snacks, pretzels, bananas, cookies, water and Tailwind.

Massage: The Start/Finish area will have a massage tent available for all our runners from 8 a.m. to 9 p.m., courtesy of our sponsor, Restore U Solutions and Christine Wolf.


Swag and Awards:

We all love event goodies! And, that is why each registered participant will receive a short sleeve-tech shirt and a 10L waterproof drop-bag. Additionally, upon finishing, runners will receive a locally handcrafted coffee mug made by Sunset Hill Stoneware in Neenah, Wisconsin.

Not included but may be earned! Every runner who completes more than 50 Miles in the 8 Hour or 15.5 Hour events will also EARN a nice, thick 1/4 zip athletic top and a '50M' or '100K' patch to commemorate your accomplishment! You only earn the shirt once. If you earned a shirt in 2017, 2018, or 2019, you will earn a second, third, (or fourth) '50M' or '100K' patch in 2020.

Top 5 Male and top 5 Female of each event will receive a special award.

Pacer / Crew Information

CREW Rules:

  • Be courteous and obey any requests from race officials.

  • Crew must review and be familiar with ALL rules.

  • Crew must be courteous while using porta-potties (runners first).

  • Crew may only park in authorized areas.

  • Crew may only support runner and pacer within 100 feet of an official aid station.

  • Crew must allow participants to receive aid before getting supplies for their runner.

  • At the start/finish area, crew must set up past the aid station tent so there is no interference with lap counting.

  • RULES violations could result in your runner receiving a disqualification.

PACER Rules:

  • Pacers are ONLY allowed for the 15.5 Hour event.

  • Pacing is ONLY allowed after 1PM.

  • Pacers must register at the main event tent (start/finish line) prior to pacing. All pacers will complete and sign a medical and release form. If a pacer is under 18 years old they will need a guardian to sign on their behalf.

  • Only one pacer is allowed per runner at any given time.

  • Pacers will stay with runner at all times - no running ahead to fill bottles, get food, or access drop bag.

  • Pacers may not mule for their runner - no carrying runner supplies.

There will be no charge for pacers in this event and each will have full access to each aid station while pacing. Please note that pacers will not be eligible for any awards, as they are not considered official runners.

Refunds, Deferrals or Transfers

This event will be held regardless of the weather conditions! There are NO refunds or deferrals for this event, you may however transfer your bib to another runner before June 20, 2020. 

a special award.


June 26-27, 2020

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