Get Ready for 38th Annual Los Alamos Triathlon

Join the Los Alamos Recreation Division Saturday, Aug. 18, as it presents the 38th Annual Los Alamos Triathlon in all its glory.

The 20k bike ride is back to its old course of challenging climbs and beautiful scenery; then jump in the pool (feet first) for a 400 meter swim; and conclude with the 5K run from the Aquatic Center to the First Baptist Church on Diamond Drive and then turning around and running back to the Aquatic Center.

The Los Alamos triathlon was organized by Bill and Maureen Hudson in 1975 and is the longest running continuous triathlon in the country.

Following the event, join the celebration with food, awards, and lots of give-a-ways. 

For those who can’t race this year, volunteers are always needed and they’ll walk away with a great t-shirt and a full stomach.

The triathlon starts at 7 a.m., at the Larry Walkup Aquatic Center.


  • Elite, Individual, Clydesdale, and Athena, $50.
  • Two Person Team, $90.
  • Three Person Team, $120.

Courtesy/Los Alamos County Recreation Division

Individual Race Categories

11-14     15-19     20-24     25-29     30-34     35-39     40-44     45-49     50-54     55-59     60+

Elite: No Age Category

Athena:  Women 150+ pounds (Weigh-in by 6:30am)

Clydesdale: Men 200+ pounds (Weigh-in by 6:30am)

Team Categories:All Male/ All Female/ Coed

19 and Under 20-39 … 40-59 … 60+

For additional race information visit online at or

Registration Information:

Online at  or in-person at the Larry R. Walkup Aquatic Center

Mail-in: Los Alamos County Recreation Division, Attn: Los Alamos Triathlon, 2760 Canyon Road, Los Alamos, N.M. 87544

Registration Deadline: 7 p.m., Tuesday Aug. 14

No race day registration

19th Annual Los Alamos Kids Triathlon

Courtesy/Los Alamos County Recreation Division

Sunday, Aug. 19 … 1 p.m. Start Time

A fun introduction to the multi-sport world for children and youth with an emphasis on fun and fitness. All finishers receive a participation medal. Continuous and non-timed event. Limited to 150 competitors.

Categories & Fees:

Fee:  $25

Pee-Wees: Ages 3-4
1/4 Mile Bike / 100 Yard Run / 25 Yard Swim

Pee-Wees: Ages 5-6
1/4 Mile Bike / 100 Yard Run / 25 Yard Swim

Juniors: Ages 7-8
1/2 Mile Bike / 1/4 Mile Run / 50 Yard Swim

Juniors 9-10
1 Mile Bike / 1/2 Mile Run / 50 Yard Swim

Kickboards and lifejackets are available and may be used.

Bicycle helmets are required for all participants.

Registration Deadline: Tuesday, Aug. 14

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