Sunday, Mar 10, 2013 @ 8:00 AM

Pi Day River Rotation

8th and Oak

Lawrence, KS 5K, 1/2 Marathon

This Event Took Place Sun. Mar 10, 2013


Trail run on a smooth, fast course with a few hills sprinkled in for fun.
The Pi Miler, starting at 7:30 am, is 2 loops of different distances, totaling 3.14 miles (just over a 5K).
The River Rotation Half Marathon, starting at 9 am, is a 13.14 mile three-loop course, alternating between counter clockwise and clockwise directions.

New for 2018, we are introducing the Pi Day River Rotation Full Marathon! Starting at 8:30am, runners will take a short lap, and 5 longer loops bringing you to 26.21 miles.

There will be a single aid station located at the trail head, and aid station at finish line. Runners in the marathon and half-marathon will pass the aid station at 5-mile intervals.
Water, Tail Wind, Honey Stingers, fruit, and other items will be available at the aid station.
After the race, enjoy some homemade pie at the finish line!

Chip timing will return.

Start Time

The Pi-Miler will begin at 7:30am.

The 1/2 Marathon will begin at 9:00am.

The Marathon will begin at 8:30am.
Cut off for all races is 6pm.

Lawrence Trail Hawk Discount

Dues paying members of the Lawrence Trail Hawks ( are eligible for the Trail Hawk discount of $10.
To get your code or to become a member of the Lawrence Trail Hawks, contact RD Caroline.

Having your Pi

The Pi Slam is an option for registration. Runners of the Pi Slam will run the Pi Miler and the Pi Day River Rotation Half Marathon.

The Ultra Pi Slam is another option for registration. Runners of the Ultra Pi Slam will run the Pi Miler and the Pi Day River Rotation Full Marathon.

For those feeling like they have the time, there is also the Answer To Everything (aka 42). The runners of 42 will run the Pi Miler, Pi Day River Rotation Half Marathon, and the Pi Day River Rotation Full Marathon.


This year all runners will receive special runner gloves at swag.
Black, unisex t-shirts will also go in the bags.
All finishers will receive a finisher's award and car vinyl with distance.

Pi Day hoodies will be back. Ability to order will be up soon.


1st, 2nd, 3rd place male/female overall awarded for all races   

1st place male/female in <20, 20-29, 30-39, 40-49, 50-59, 60-69, 70+

1st place in Clydesdale and Athena
Clydesdale and Athena competitive divisions are based on weight minimums outlined in the USA Triathlon Competitive Rules. Athletes competing in the Clydesdale division must be a minimum of 220 pounds and athletes in the Athena division must be a minimum of 165 pounds.

Awards for the Miler will be presented at the finish line and announced at the starting line of the Pi Day River Rotation Half Marathon prior to it's start.
Awards for the Pi Day River Rotation Marathon and Half Marathon will be awarded at the finish line.
Winners must be present to receive their awards.

Get more information

Join us on Facebook to get some motivation, Pi humor/facts, meet your fellow runners, and for updates on the race!

March 10th and 11th registration

Online registration will close on the 7th, but you can still sign up to run the races by going on Friday, March 9th to packet pickup and on March 10th at race day location sign in tent.


The Organizer’s refund policy is subject to change at the discretion of the Organizer and any such changes are published either within this refund policy, Facebook page, and/ or on the Lawrence Trail Hawks website.
You, as the participant, understand that we may cancel or postpone the Event if circumstances beyond our reasonable control. The Race Directors reserve the right to modify or cancel the race or course for safety concerns or natural disaster. In such cases there will be no refunds of race entry fees. Each athlete must accept any such risk of their entry fee paid. There is no complimentary race entry to a future race. Entry fees collected are used to develop and produce the event, starting well in advance of the race date – including course preparation, race supplies, permits and administration. We pledge to make every effort to produce a fair and safe event for all participants. Any decision we make that impacts the race date or potential cancellation is carefully considered and based on the overall event safety and manageability.
The organizer will not refund any proportion of the Event Participation fee once the Participant has participated in the event. This policy is non-discriminatory and does not take account of any individual circumstances in order for fairness and clarity.
Event reservations may be transferred between categories provided any additional costs that are relevant are paid in full if such a request is emailed ten clear days before the event date.
You may transfer your Event reservation to a friend, in writing, to the Organizers, along with a signed waiver by the new participant, if such a request is emailed fourteen clear days before the event date.

Local time: 8:08 PM


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