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The Atomic Multisport Event by Personal Best Racing

Date
October 10, 2026
Distance
Individual Half Iron Triathlon · Clydesdale Half Iron Triathlon - Male 220+ · Athena Half Iron Triathlon - Female 165+ & more

From the Organizer

Location: TVA Melton Hill Dam area, directions below. Race walk through Friday at 6 PM at race site. Arrive at site Saturday no than 7 AM EST for ample time for parking, packet pickup and getting ready for event starting promptly at 8 AM EST.

PACKET PICKUP & LATE REGISTRATION- PICTURE ID REQUIRED

Friday, Oct 9th - 5 PM - 6:30 PM at race site - see race location below.

Saturday - Race morning from 6:30 AM to 7:30 AM - at race site.

Registration is open race morning! Relays MUST come together to pick-up packets - no exceptions.

*Note- We do typically see heavy fog on occasions each year, so if it is too foggy, we will most likely delay until it clears for swimmer safety.

PARKING: Lower lots below dam - walk up hill to transition. No boat ramp access for racers. You can come to the Upper bath house lot to drop-off gear / bike but no parking.  Parking is also available at the Overlook.

Half Iron info:  

Note:  Half Iron participants will have the option to upgrade to a Hoodie Sweatshirt during registration.

SWIM Course Map- START INFORMATION- The swim is a wave start from just outside the swim area at the dam end. The course will be a two loop rectangle finishing on the beach of the swim area. Swimmers will STAY IN WATER TO COMPLETE LOOP ONE. EXIT ONLY AT END OF SECOND LOOP. Keep buoys to your Right. Follow flagging to transition area. Water temp approx. 73.

Bike Courses will be modified from previous years, please stay tuned for a most amazing experience!

RUN Course Map-The Run course has been modified to stay around the dam.  Runs will leave the campground/transition and to 58 then across the bridge and back down the other side of the dam to turnaround and head back.  Half Iron will complete 2 loops.

Note for the Half Iron: we are instituting "cut off times" for the safety of participants, volunteers and support staff - limits noted are from the start of final starter: swim 1:15, bike 5:15 hours, run 1/2 way point 7:15 - finish line, music, etc. will be in place for all finishers - venue tear-down may begin depending on severe weather forecast, as in past years. Safety is our first priority. 

Sprint/Olympic Triathlon info:

Choose either the Sprint Triathlon 500 meter Swim, 18.6 mile Bike, and 5k run or Olympic Triathlon 1500 meter swim, 40k Bike and 10k run.  

Sprint Maps: Swim BIKE RUN 

Olympic Maps: - Note: Oly swim will have two additional buoys of different color to go around each loop - no exit after 1st loop.

Duathlon Info:

The Sprint Duathlon will be a 5k Run, 18.6 mile Bike and a 5k Run.

Duathlon Maps

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Melton Hill Campground - Campground is right across park access road from transition and finish area. The availability of sites should be good being early October. Here is a link to reservations for the Campground.

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Check out Explore Oak Ridge for Restaurants, Hotels and things to do.

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Personal Best Racing has enabled event insurance for your consideration in the event you are unable to compete. Please review this option during the registration process. 

All Personal Best Racing triathlon events are sanctioned by USA Triathlon. When a race sanctions with USAT, it is required for each participant to purchase either a one-day license or annual membership in order to participate in said event. A one-day USAT license is $15 and an annual USAT membership is $50. Either can be purchased when signing up for the event. A youth one day or annual USAT license is $10. Click here to learn about your USAT benefits and where your member dollars go.

Personal Best Racing has a NO REFUND policy.  Insurance is available during the registration of each event. Please take advantage of this option should you wish to insure your entry fees.

 

Event Shirts - Event shirts are NOT guaranteed to participants registering within 2 weeks of each event. Please register prior to 2 weeks prior to guarantee your race shirt.

 

Distances & Pricing

Individual Half Iron Triathlon7:45 AMRegister →
Clydesdale Half Iron Triathlon - Male 220+7:45 AMRegister →
Athena Half Iron Triathlon - Female 165+7:45 AMRegister →
Relay Half Iron Triathlon7:45 AMRegister →
Aqua-Bike Half Iron Triathlon7:45 AMRegister →
Atomic Sprint Triathlon - Individual8:30 AMRegister →
Atomic Sprint Triathlon - Clydesdale 220+8:30 AMRegister →
Atomic Sprint Triathlon - Athena 165+8:30 AMRegister →
Atomic Sprint Triathlon Relay8:30 AMRegister →
Sprint Aqua Bike8:30 AMRegister →

Race Location

About This Sport

From Endurance Grid's Founder

Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.

With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.

Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.

Running

From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.

Frequently Asked Questions (FAQs)

What is The Atomic Multisport Event by Personal Best Racing?
The Atomic Multisport Event by Personal Best Racing is a running event held in Lenoir City, TN. Learn more about the different endurance sports here.
When and where is The Atomic Multisport Event by Personal Best Racing?
Saturday, October 10, 2026 in Lenoir City, TN at 1700 Melton Hill Dam Rd, Lenoir City, TN. Check the official event page for exact start times and wave schedules.
How do I register for The Atomic Multisport Event by Personal Best Racing?
Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.

The Atomic Multisport Event by Personal Best Racing

Oct 10, 2026

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