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» Duathlon


Sunday, July 12, 2020


Big Creek State Park – Beach (MAP)
8550 NW 142nd
Polk City, IA 50226

For information on Water Quality Click Here


Packet Pickup:
Saturday, July 11: 2:00 pm – 5:00 pm – Exile Brewing Company | 1514 Walnut St., Des Moines, IA 50309
Sunday, July 12: 6:00 am – 7:00 am – Big Creek State Park (at beach)

Transition area: Open from 6:00 – 7:30 am on Sunday morning.
Mandatory pre-race meeting: At the swim start area at 7:45 am.
Competition: Begins at 8:00 am


Jason Wulf

Sponsored By

Competition Format

This is an open course event, meaning that participants must share the road with traffic. For safety, helmets must be worn during the cycling portion of the competition and no headphones/iPods will be allowed on any part of the course. Participants should leave their running shoes in the transition area.

Course will consist of the following:
Run – 5K
Bike – 20K
Run – 5K


Triathlon Federation USA Rules will be followed, with the right to make exceptions. This is not a sanctioned race. Note: Helmets must be worn during the cycling portion of the competition. For safety reasons, no headphones/iPods etc. will be allowed on any part of the course.

Age Determining Date

December 31, 2019


Athletes will receive a dri-fit shirt.

Medals sponsored by Grinnell Mutual

Gold, silver and bronze medals awarded in each age division.

Chip Timing

True Time Racing Service will chip time the event.  Chips will be distributed with packets.

The race will be timed live through True Time Racing. Please follow the link below to follow the race and to see post-race results. Please send any questions about your times to

Volunteers Needed!

This event would not be possible without volunteers. If you would like to be part of the action, numerous volunteers are needed for this event.

For more information on volunteering, click “Volunteer Opportunities” in the drop down menu or click the button in the top right corner of the page. Please contact Dan Beitelspacher,, to learn more about volunteering or if you have questions.

Team | Female, Male & Coed


Individual | Female & Male

15 & Under
16 – 19
20 – 24
25 – 29
30 – 34
35 – 39
40 – 44
45 – 49
50 – 54
55 – 59
60 – 64
65 – 69
70 – 74
75 – 79
80 – 84
85 & Over
Clydesdale – Men at least 220 pounds
Athena – Women at least 165 pounds

Registration Deadline

$60 Entry Fee
$130 Team Entry Fee
Postmark: Friday, July 5
Online: Friday, July 5
*Entry fee includes Dri-Fit Shirt

$80 Entry Fee
$155 Team Entry Fee
Online Only: Saturday, July 6 – Thursday, July 11 at 12:00 pm
*Entry fee includes Dri-Fit Shirt

On-Site Registration

$85 Entry Fee
Onsite entries NOT guaranteed Dri-Fit Shirt.


Gold Sponsors