Course Details

Hagg Lake Triathlon
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Course Details

Olympic Triathlon – 1500m Swim / 40k bike / 10k Run – The Hagg Lake course is famous for its race history, scenic beauty, and challenge. The swim is a two counter clockwise laps, 1500 meter triangular with water temperatures in the mid 70’s. The bike course is challenging with rolling hills. Cyclists will complete two counter-clockwise loops around the lake. Both loops will include a two mile out and back section on Scoggins Valley Road. The 10K mile run is also scenic and challenging, with an out and back course clockwise along the lake side road.

Olympic Duathlon – 5k Run / 40k Bike / 10K Run – Olympic Duathlon participants will begin with an out and back 5k run. They will complete the same 2 bike loops that the Olympic Triathletes complete. The final 10K run will take place on the same out and back course as the Olympic Tri.

Olympic AquaBike – 1500 m Swim / 40K Bike – Same Swim and Bike Course as the Olympic Tri.

Sprint Triathlon – 1/2 mile Swim / 20k Bike / 5k Run – The Sprint course will include a one loop 1/2-mile swim, one complete 20K loop (including one out-and-back on Scoggins Valley Road) on the bike, and a 5k out and back run.

Sprint Duathlon – 5K Run / 20K Bike / 5k Run – Sprint Duathlon participants will begin with a 5k run. They will complete the same bike loop that the Sprint Triathletes complete. The final 5K run will be the same route as the initial 5k.

Sprint AquaBike – 1/2 Mile Swim / 20K Bike – Same Swim and Bike Course as the Sprint Tri.

Aid Stations – Water and electrolyte will be provided at approximately each mile on the run (which will provide two water stops for the 5k distance and five water stops for the 10k distance).

Race Details

Date: 07/20/2019 - 07/21/2019

Time: 8:00 am wave starts


Henry Hagg Lake State Park
50250 SW Scoggins Valley Road
Gaston, Oregon 97119
Outside Forest Grove
Boat Ramp "C"

Map & Directions: View Map


Swim Course Map

1 Loop for Sprint Athletes / 2 Loops for Olympic Athletes

Bike Route Map

1 Loop for Sprint Athletes / 2 Loops for Olympic Athletes

10k Route Map

5k Route Map

Off-Road Sprint Triathlon / Duathlon / Aquabike

If you love adventure, a fun challenge, trail running, triathlons, and riding your mountain bike, you won’t want to miss this new event at Hagg Lake Multi-Sport weekend festival.

The scenery is epic and the course is challenging! You’ll definitely earn your Deschutes Brewery Beer!’

  • OFF-ROAD Sprint Triathlon: 500m Swim, 14 mile Bike, 5K Run (Start Time – 8:00am in waves)
  • OFF-ROAD Sprint Duathlon: 14 mile Bike, 5k Run (Start Time – 8:10am Time Trial)
  • OFF-ROAD Sprint AquaBike: 500m Swim, 14 mile Bike (Start Time – in AquaBike Wave)

500-Meter Swim

Off-Road Cycle

Off-Road 5K

Off-Road Half-Marathon

NOTE: Our OffRoad Triathlon is sanctioned by USAT so all USAT Rules and Guidelines apply. The most signifcant diffferences for an Off-Road Triathlon compared to a Road Triathlon are as follows:

Legal Bikes: Only mountain bikes are legal for competition. Cyclo-cross bikes are not allowed. No drop handlebars are allowed. No aero bars are allowed. All bikes must have 26”, 27.5” or 29” wheels. Bar extensions or grips off the handlebars may not exceed five inches (5”). Any/all bar ends must be capped. Be sure you have the correct tires to manage challenging terrain including steep climbs and descents, branches, roots, rocks, dirt and mud.

Passing: Lapped riders must yield to overtaking riders. Riders should voice the command “On your left,” when overtaking another. It is the responsibility of faster rider to overtake safely. Slower riders must yield to the passing rider on the first command. In the event two riders are racing for position, the leading rider does not have to yield position to the challenging rider. However, a rider may not bodily interfere with or impede another rider’s progress.

Course: An Off-Road Triathlon often has many trail junctions. You are resonsible for understanding the course and how it will be marked and paying attention at all intersections to assure you stay on course. It is suggested that you slow down at all upcoming intersections to minimize any wrong turns and assure you stay on course with the least amount of back-tracking. Along the Hagg Lake course, you will always have the Lake on your Right and the Road on your left so although you may get off course, you won’t get too lost for too long. If you haven’t seen a course marking in about a 1/2 mile, turn around to find your last course marking.

Drafting: Drafting is allowed.

Off-Road Half Marathon + Trail Run: The 14 mile Off-Road Half Marathon is a fun and challenging clock-wise loop around Hagg Lake. You will be required to manage steep climbs, descents, tree roots, branches, dirt, mud and rocks. You may want to walk through challenging areas that may be above your current fitness or experience level. There will be some points where you will come off the trail and onto the road for a section. Be sure to watch for vehicles so you can safely enter the road and run/walk defensively. At each road section, there will be markings to indicate you are on course and markings to get you back onto the trail. It is important to know that the first few miles of the course are the most challenging and technical so once you get through that area, it will become less technical.

Training & Preparation

Ok, Step #1. Register! That puts purpose to your training and forces you to commit – an important part of getting to the finish line!

Sponsors & Exhibitors

Our athletes – triathletes, duathletes, runners, walkers, cyclists – are active, educated, middle to high income earners who are committed to their fitness while also supporting our community.


This event requires a ton of volunteers so if you can recruit friends, family, companies, churches, or sports teams to help that would be extremely helpful. They will get front row seats to all the action!

Event Partners

We’re honored to partner with these great companies to provide you the absolute best race experience. We couldn’t do it without them so please show them the LOVE and support them as a thank you for all they do for our community.


Follow @why_racing_events and use #WhyRacing to share photos!


WHY Racing Events Inc.
2310 E 2nd Street, Suite A
Vancouver, WA 98661

Phone: (360) 574-7292
Email: info@whyracingevents.com