{
  "$type": "site.standard.document",
  "description": "Last month, World Triathlon announced updates to the competition rules, and there's been some conversation online about some of these changes, including relaxing the water quality standards for the swim and banning watches during the swim. The former is interesting after the water quality in the Seine caused the men's triathlon to be postponed at the Olympics last year; the latter only applies to elite races in the standard (i.e. Olympic) distance or shorter, so I don't expect Ironman to implement it. However, lost in the chatter was another update to the rules that wasn't even mentioned in World Triathlon's announcement, and limits how much hydration can be carried on the bike: m.) Hydration Volume Limitation: Hydration volume (e.g. bottles or hydration systems) mounted to components that rotate around the steering axis (e.g. cockpit extensions, base bar) must have a combined maximum capacity of 2 litres; n.) Rear Mounted hydration systems, (excluding those mounted to the inside the frame triangle bike are limited in size, capacity, dimension and location as set forth below: (i) cannot contain more than two water bottles; (ii) must not exceed 1L capacity per bottle. In short, you can only carry a maximum of two liters between the aerobars, and up to two bottles, of no more than one liter each, behind the saddle. Ironman hasn't released any updates to their rules this year, but it's interesting that this rule would render 2024 Ironman World Championship second-place finisher Magnus Ditlev's sick three-bottle BTS setup illegal, so I'm curious to see what they do.",
  "path": "/2025/02/23/new-world-triathlon-bike-hydration-rules/",
  "publishedAt": "2025-02-23T21:00:00.000Z",
  "site": "at://did:plc:vmxpdybfbj3ogs4w6p5pjhhs/site.standard.publication/self",
  "tags": [
    "News",
    "Triathlon"
  ],
  "textContent": "Last month, World Triathlon announced updates to the competition rules, and there's been some conversation online about some of these changes, including relaxing the water quality standards for the swim and banning watches during the swim. The former is interesting after the water quality in the Seine caused the men's triathlon to be postponed at the Olympics last year; the latter only applies to elite races in the standard (i.e. Olympic) distance or shorter, so I don't expect Ironman to implement it. However, lost in the chatter was another update to the rules that wasn't even mentioned in World Triathlon's announcement, and limits how much hydration can be carried on the bike: m.) Hydration Volume Limitation: Hydration volume (e.g. bottles or hydration systems) mounted to components that rotate around the steering axis (e.g. cockpit extensions, base bar) must have a combined maximum capacity of 2 litres; n.) Rear Mounted hydration systems, (excluding those mounted to the inside the frame triangle bike are limited in size, capacity, dimension and location as set forth below: (i) cannot contain more than two water bottles; (ii) must not exceed 1L capacity per bottle. In short, you can only carry a maximum of two liters between the aerobars, and up to two bottles, of no more than one liter each, behind the saddle. Ironman hasn't released any updates to their rules this year, but it's interesting that this rule would render 2024 Ironman World Championship second-place finisher Magnus Ditlev's sick three-bottle BTS setup illegal, so I'm curious to see what they do.",
  "title": "New World Triathlon bike hydration rules—will Ironman follow?",
  "updatedAt": "2025-08-19T22:52:46.270Z"
}