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Triathlon

Articles and publications tagged Triathlon across the Atmosphere.

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Given to Tri
Given to Tri
Jul 2, 2025
Ironman announces new performance-based qualification for Ironman and Ironman 70.3 World Championships
This new system, which takes effect with the 2026 qualification cycle starting this month, basically does away with the old roll-down system, in which unclaimed slots would roll down indefinitely within an age group. Ironman has a good explanation in their FAQ, but the short version is: Each race is allocated a number of World Championship slots, as before. Winners of each age group automatically get a World Championship slot. If they decline it, the slot can only roll down to second or third place. Any unclaimed slots go to a global "Performance Pool" for that race. The finish times of the remaining athletes are normalized by multiplying them by some factor for each age group, so they can be ranked together. This factor is derived for each age group from the top World Championship finish times over the past five years, and will be updated every year. The remaining slots are offered to the top finishers in this age-graded normalized ranking, and roll down until they're all claimed. For Kona, there's a single age-graded ranking including men and women; for 70.3 Worlds there are separate rankings for men and women, since they're separate races. It sounds complicated, but the examples they have in the FAQ make it easier to understand: Anne is 42, she finishes IRONMAN Kalmar in 9:19:51, giving her an age-graded finish time of 8:07:26, applying the Kona Standard of 0.8707 (9:19:51 × 0.8707 = 8:07:26). John is 43 and finishes IRONMAN Kalmar in 8:50:31, giving him an age-graded time of 8:33:42, applying the Kona Standard of 0.9683 (8:50:31 × 0.9683 = 8:33:42). Anne would rank above John in the age-graded rankings due to her age-graded time of 8:07:26 being faster than John’s age-graded finish time of 8:33:42. For me, this means any hopes I had of getting lucky with a deep roll down in my age group at a late-season race are probably dashed, but I like this change; it makes qualification fairer and more competitive. I'll simply have to git gud, or outlive everyone and qualify in the 90–94 age group.
NewsTriathlon
Given to Tri
Given to Tri
May 20, 2025
What's the water temperature at Lucky Peak Reservoir in July?
Ever since the return of Ironman 70.3 Boise was announced, I've been wondering what the water temperature would be like on race day. I know in the previous iterations of this race, when it was in early June, it was a very cold swim: In 2011 the water temperature was 11°C, and in 2012 it was so cold, people wore wetsuits on the bike, which was shortened to 24 km. So far I haven't been able to find a reliable source of historical water temperatures at Lucky Peak Reservoir to look up what it might be like in late July, but today I got an email from Ironman that states (emphasis mine): The IRONMAN 70.3 Boise 2025 swim course offers athletes a refreshing and scenic 1.2-mile swim in the pristine waters of Lucky Peak Reservoir. Starting and finishing in the easily accessible Barclay Bay area, this single-loop course provides a calm and clear environment, ideal for both seasoned swimmers and first-time triathletes. The reservoir's typical water temperatures in late July range from 64°F to 70°F (18°C to 21°C), making it comfortably wetsuit-legal for most participants. That's not so bad, that's downright pleasant! Anyway, just thought of dropping that here in case anybody else needs to Google it. Here are the actual water temperatures at Lucky Peak Reservoir on race day for every Ironman 70.3 Boise in July so far: Race Day Water Temperature July 26, 2025 19.6°C July 25, 2026 20.8°C
Half DistanceIronman 70.3 Boise
Given to Tri
Given to Tri
Apr 25, 2025
World Triathlon updates hydration rules again
They're further revising the rule changes they announced a couple months ago with a new set of updates, effective as of April 15th. The rule interpretation document includes a number of changes, but most notably, all front and rear hydration now must fit within a certain space on the bike. For front hydration: When measured from the lowest edge of the arm support (if none exists, the lowest edge of the athlete's elbow in the rider's intended aero position), all attached objects on the handlebars (bottles, holders, containers, etc.) must be within an area with the following dimensions: a maximum of 250 mm in the direction of the saddle and a maximum of 200 mm in height and no further than the foremost point of the handlebars or clip-ons, and a maximum of 20 mm from the highest point of the front wheel. And for rear hydration: All attached holders, containers, bottle holders, etc. must fit completely into an imaginary frame no larger than 30x30cm. Bottles may protrude beyond this area. The volume of liquid hasn't changed: Up to two liters in the front and back, and up to two bottles in the back. There's one big exception, though---the rules now include built-in hydration systems, so if you are using one, you can only carry up to two liters and you can't carry bottles behind the saddle. It seems the intention is to put everyone on a level playing field by limiting hydration to a total of four liters. I expect Ironman to adopt these new rules shortly, just like they did last time. In the meantime, I need to go check my hydration setup, because I honestly have no idea if it's legal anymore. Update (5/28/2025): Ironman won't be enforcing these new rules for age groups just yet.
NewsTriathlon
Given to Tri
Given to Tri
Feb 26, 2025
Ironman adopts World Triathlon's bike hydration rules
Well, that was fast. On Sunday I wondered if Ironman would adopt World Triathlon's new rules limiting the amount of hydration that can be carried on the bike, and today I got my answer: Yep. In the 2025 Ironman competition rules, the section on bike equipment has been updated to be consistent with World Triathlon rules: (i) Front Mounted Water Bottles and Hydration Systems mounted to components attached to the bike that rotate around the steering axis (e.g., cockpit extensions, top tube, headset, stem, head tube) must have a combined maximum volume capacity of no more than two (2) liters (this excludes water bottles and hydration systems located inside the frame triangle of a bicycle or inside the bicycle frame) (DSQ). (ii) Rear Mounted Water Bottles and Hydration Systems are limited in size, capacity, dimension and location as set forth below: (i) Cannot contain more than two (2) water bottles* (DSQ); and (ii) Must not exceed one (1) liter capacity per bottle* (DSQ). *Excludes water bottles and hydration systems located inside the frame triangle of a bike or inside the bike frame. Here's a full summary of the updated competition rules, which include a few other verbiage changes and updates for consistency with World Triathlon. Among other things, the penalties for blue card violations, such as drafting and littering, have been reduced to 3 minutes for full Ironmans and 2 minutes for 70.3s (down from 5 minutes for both). The rules also clarify that you can wear neoprene hats whenever wetsuits are allowed and that you can wear two swim caps (in both cases you still have to wear the race cap on top). Ironman also has a short FAQ that explains the changes very clearly.
NewsTriathlon