Sunday, Mar 10, 2013 @ 8:00 AM

Pi-Day River Rotation Half

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 8 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.
There will be a single aid station located at the trail head. Runners in the half-marathon will pass the aid station twice, at 5-mile intervals.
Water, sports drink and fruit will be available at the aid station.
After the race, enjoy some homemade pie at the finish line!

Start Time

The Pi-Miler will begin at 8:00am.

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

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.


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.


This year's shirts will be by Atayne with their awesome sublimation printing. Long sleeved for the Pi Day River Rotation Half Marathon, and short sleeved for the Pi Miler. Shirts are based on gender, so if you would like the opposite, please email us and let us know. A link to their sizing chart: Because these will be custom shirts for us (color combo and all) we do need to have the order to them earlier then normal, so to guarantee your size, you need to be registered by January 25th, 2017. After that date, there are no guarantees on quantity or size. We'll be offering neck gaiters from Atayne with the Lawrence River Trails imprinted on them and the Pi Day logo for sale at check out and on race day (while supplies last). Good for all year! Pi Day hoodies will be back. More info to come!


1st, 2nd, 3rd place male/female overall awarded for both 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 starting line of the Pi Day River Rotation Half Marathon prior to it's start.
Awards for the Pi Day River Rotation Half Marathon will be awarded at the finish line when approximately 2/3rds of runners have come through.
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 9th, but you can still sign up to run the races by going on Friday, March 10th to packet pickup and on March 11th at race day location sign in tent.

Local time: 8:43 PM


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