Ad Astra per Ultra

Ad Astra per Ultra 100 Mile is one leg of the Kansas Grand Slam of Ultrarunning! For more info click HERE!

Race Websites
For additional race information, please visit Be sure to also "Like" us on Facebook to keep up with everything race related!

Race Cap
For the safety of the runners, congestion on the course, and to make this one of the best ultras in the Midwest, there will be a race cap of 100 participants. Be sure to register early to secure your spot, custom race bib, and date specific finisher buckle!

If you are registered and need to drop out, we understand that things in life happen. You do have the option of to transfer your registration to a new participant if requested before September 1st.
If you want to change races, you can drop down for no charge. If moving up, you will pay the difference between the registration fee you already paid (not including processing fee), and what the current registration fee is.
If you would like to defer until the next year, 75% of your registration fee will be deferred.
There are no registration refunds. After September 1st, if transferring to another runner, there is no guarantee on item sizes available. Contact Carolyn Robinson at [email protected] if you need to transfer.

Are you a current doctor, medic, firefighter, or police officer? If so, would you like the possibility of a free entry into the 100 mile race? We are looking for one person currently trained for emergency situations to help be another set of eyes on the course. We will waive your entry fee with the understanding that if you see something happen to a runner on the course, you stop your race and set aside your goals to help that runner and contact us. On a loop course like this, the chances are very slim that anything would happen along the course, but runner safety is our top priority. If you would like to be considered for this, please contact Carolyn Robinson at [email protected]

In the entire US, the Ad Astra per Ultra is one of only 10 record eligible 100K races. Kansas is now one of only four states to have a certified and record eligible 100 mile race, joining Minnesota, North Carolina, and Texas. For many of the states surrounding Kansas, this is the only USATF Certified, fixed distance ultra.

The state motto of Kansas is Ad Astra per Aspera. Translated to English as "To the stars through difficulty." There are few phrases that can sum up an ultramarathon more eloquently. Completing an ultramarathon is never easy, but it is always the difficulties in life that make us better. If it was easy, then ultrarunners would make up more than 0.021% of Americans. As Kansans and ultrarunners ourselves, we know how rewarding it is to work through all of the difficulties associated with an ultra as you make your way to the stars.

With a great loop course, fully stocked aid station, and top notch event items, the Ad Astra per Ultra is one of the Midwest’s finest road ultras. If you are new and looking for a great first ultra, wanting to run a fast time, appear in theKansas Road Running Records, or even qualify for a national or world team, then the Ad Astra per Ultra is the race for you!

Event Times
October 14th
4 pm to 7 pm – Packet pickup will be available at the Derby High Park shelter by the finish line
6 pm – Pre-race pasta dinner at the Derby High Park shelter by the finish line

October 15th
6:30 am to 7:45 am – Packet pickup will be available at the Derby High Park shelter by the finish line
7:45 am – A race starter will take each distance to that distance’s starting line
8 am – All races start
7 pm – NEW FOR 2016! Twilight 50K start
11 pm – All 100 milers should be through 50 miles

October 16th
7 am – All 100 milers should be through 75 miles
2 pm – 100 mile cutoff. Anyone who has not finished will show as DNF in Results

Event Items
All finishers will receive the following items: Custom race bib, long sleeve tech fabric T-shirt (must be registered by September 30th), pre-race pasta dinner ticket, race photos, date specific belt buckle, "Sub 24 Hour Finisher" plaque in the 100 mile, overall awards (top 3 in each distance, men and women), and additional race items to purchase at checkout

The course is a single loop 2.2033 km paved course through Derby High Park. It is completely on a wide bike path, but please be aware that the general public could possibly be on the course. The start of each race will be a partial portion of the course to get it to the exact distance. Once you enter the finish chute on each lap, you will need to continue all the way out of the chute without stopping. This is to ensure that we get a proper lap count for you so that we can have the most accurate results possible.

Aid station
The aid station will be fully stocked with traditional ultramarathon items. Foods will include various fruits, boiled salted potatoes, potato chips, rice crispy treats, candy, Oreos, and more! There will be water, soda, and sports drink supplied throughout the race along with S! Caps. If you have a specific food or drink preference, please feel free to bring it for yourself.

Elite Runners
Are you a National or International class runner? You may be eligible for part or all of your registration to be reimbursed! There are the times you have had to meet to be considered National or International class based on what the IAU has set forth. Please visit and look under description to see the standards. Contact Carolyn Robinson at [email protected] if you qualify.


October 15, 2016 (Saturday) - 08:00
50 kilometers
October 15, 2016 (Saturday) - 08:00
42.195 kilometers
50 Mile
October 15, 2016 (Saturday) - 08:00
50 miles
October 15, 2016 (Saturday) - 08:00
100 kilometers
100 Mile
October 15, 2016 (Saturday) - 08:00
100 miles
Twilight 50K
October 15, 2016 (Saturday) - 19:00
50 kilometers


Oct 15 2016 : Partly cloudy in the evening.
11.3°C - 24.4°C (52.4°F - 75.9°F)

Powered by Dark Sky

The information about this event is based on data from the official website or may be provided by the organiser. Before booking flights or accommodation check the event's website and social media. If this listing is not up-to-date, please let us know at [email protected]
Last checked on 2022-02-08


Closest Races

Hotels and Airbnbs near Ad Astra per Ultra. Book your stay now!