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suMmer open sprint



The Summer OPEN Sprint Triathlon features a half mile lake swim,  a flat and fast single loop 12.9 mile bike, and finishes with a 3.1 mile run on a gravel road that hugs the lake. Please see course maps for a full description.  Overall this is a beginner friendly course, and sets up very well for family and friends to spectate right alongside the action.  The best part of Union Reservoir is how close the transition area, start line, finish line, expo area, and parking are to each other!


This event is limited to 500 competitors; please register early to take advantage of the discounted pricing as we've sold out in 2010-2017!



Sprint Individual: $75 until 12/31, $80 from 1/1/16-2/29, $85 until 5/13 at midnight, $90 race week

Sprint Relays: $105 until 12/31, $115 until 5/13 at midnight, $120 race week




The first timers swim wave will go last in the sprint distance event. This waves will be capped at a small 50 athletes each to maintain a small and friendly 1st race experience.  


Please note: athletes in this wave will not be eligible for age-group awards.  When you register simply check off first timer division instead of age-group division to enter this wave.  Also note that this wave is for athletes competing in their first ever triathlon or brand new to the sport.




Race Day Schedule - Saturday May 19th - Race Day!

6:30am-7:45am - Athlete check-in

7:45am - Transition Area Closes No exceptions!

8:00am - Triathlon Start First Wave goes off 

Subsequent waves will start every 5min

9:10 am- Post-race snacks, massage, music & expo

10:30am - Awards Ceremony


1) Boulder Packet Pick-Up at Colorado Multisport - Wednesday 5/16 - 5:00pm-7:00pm

Village Shopping Center, 2480 Canyon Blvd M2, Boulder, CO 80302

Special FREE Clinic at 6:00pm -  Crack the Code on Open Water Swimming

Don’t just survive the swim—enjoy it.  The swim does not have to be daunting.  With proper planning, warm up, and periodic refocusing, you can have a fun and rewarding swim leg in your races.  This free clinic brings techniques for specific skills:

  • Get Your Mind Right—planning for a great swim

  • Breathe easy—key insights from physiology for comfort in the water

  • The Warm up—how to have a great start and finish

  • Wee (and not so wee) Besties—what is in that water anyway, and how to regard the marine life

  • Feet and Elbows—overcoming getting touched by other swimmers


Presenter Will Murray is the mental skills coach for

USA Triathlon certified coach, and co-author of The Four Pillars of Triathlon: Vital Mental Skills for Endurance Athletes.

2) Westminster at Endurance House - Thursday 5/17 - 5:00pm-7:00pm

(Centrally located just off I-25) 13640 Orchard Pkwy Suite 100, Westminster, CO 80023


Best Western Plus Plaza Hotel 

1900 Ken Pratt Boulevard, Longmont, CO 80501 - (303)-776-2000

Friday 5/18-Monday 5/22 - discounted rate of $129

To make a reservation please call the number above and tell them "WITHOUT LIMITS" room block

Please note: You can come to either packet pick-up and do not need to let us know which pre-race packet pick-up you're attending.  If you did not sign-up for the $5 race day pick-up and can not make the pre-race packet pick-ups just send an e-mail to letting us know you'd like to pick-up race morning, bring $5 cash with you, and plan on arriving 10min earlier than normal.


Race Day Pick-Up:  When you register you'll be given the option to pick-up your packet race morning for $5.  Why the fee?  While we don't want to charge any extra its serves more as a deterant so we don't have a 550 person line race morning. This packet pickup "convenience" fee is used to cover the cost in staffing the additional trained personnel needed to facilitate this extra special service.  Adding it to online reg also allows us to know what kind of numbers to expect race morning.  We love having athletes from Colorado Springs, the mountains, and Wyoming, and hate making you take a special trip on Fri/Sat.  The gas alone is probably $5 


USA TRIATHLON ANNUAL MEMBERS: If you're an annual USA TRIATHLON Member you must bring your valid USA Triathlon card and a valid photo ID with you to packet pick up!  


NON-USA TRIATHLON MEMBERS: If you're not a USA TRIATHLON Member then you already purchased the 1-day ($15) license when you registered and you're all set.  If you did a print and mail registration and forgot the $15 we have it in our records and you'll be able to pay the fee at packet pick-up. Please remember a valid photo ID.  As per USA TRIATHLON rules you must pick up your packet as we're not allowed to release it to friends, husbands, wives, or relatives. 



Policy #1: should a triathlon race be canceled for any reason 14 days or less from the race date, we will extend an entry fee credit certificate to athletes enrolled in the canceled race to be used against the entry fee for any single Without Limits Productions race (within the state of Colorado) of choice conducted in that calendar season, or the following calendar season. The certificate will be in the amount of $25 and can be used for any Colorado based triathlon. This certificate must be included with the completed entry form and received by Without Limits Productions postmarked by March 31st of the following calendar year. The certificate will be null and void after March 31st of the following calendar year without exception.


Policy #2: should a triathlon race be canceled for any reason 15 days or more from the race date, we will extend a 100% refund to athletes enrolled in the canceled race.




There are no refunds of Entry Fees unless the event is canceled.  Please see our Event Cancellation policy for details.  We will permit a switch to another non-closed Without Limits Triathlon race in the same calendar year as long as we receive at Without Limits Productions at least 30 days prior to the race you enrolled in, your written refund or switch request. No refunds or switches inside 30 days.  Written means via e-mail, FAX or mailed letter. We will no longer accept switches out of races from one year to the following year.


Up to the Monday of race week, you may switch from division to division, Age Group to Elite or vise-versa...and an individual may also switch to a Relay Team. By that Wednesday, we will need your written request for any changes (e-mailed).  If a change to Relay Team, we will need the completed entry forms of your Team members also by that Monday.  After Monday - NO DIVISION SWITCHES!



Another person may take your race slot as long as we receive the request no later than 30 days prior to the race date the completed entry form of the replacement plus a note from you authorizing the switch. No phone requests will be accepted.  Contact: to receive the proper transfer forms.



We reserve the right to make course changes up until race morning to improve the athlete experience or for the safety of the athletes competing.

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