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r/IronmanTriathlon↗

Ironman Racing

36k subscribers409 posts / mo in Sep 2026 (incl. <1% by known bots)360 authors / mosince 2011

r/IronmanTriathlon has 36k members (+42% over the last 12 months). It gets about 409 posts a month from 360 people. Top topics: Triathlon Training, Iron Man and Ironman Mode.

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Size and growth

How r/IronmanTriathlon has grown

r/IronmanTriathlon

Subscriber growth

Subscribers over time

+42%in 12 months · +10% in 3 months · +2.9% in 1 month
Oct 202636k
Growing36k subscribers
Data since Mar 2018Live · through Oct 2026
r/IronmanTriathlon

Monthly activity

Posts, comments and authors per month

+51%vs Sep 2025 · +27% last 3 months vs the 3 before
Sep 2026409
BusierPeaked at 425 in Aug 2026
Sep 2026: incl. <1% by known botsData through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/IronmanTriathlon

Top topics

Share of the subreddit's posts

  1. Triathlon Training2.9%
  2. Iron Man0.5%
  3. Ironman Mode0.4%
  4. Marathon Training0.4%
  5. Running Challenges0.3%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. Slowtwitch
  2. Strava
  3. Garmin
  4. Substack
  5. TrainingPeaks

The full report

Everything else about r/IronmanTriathlon

Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.

Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research