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r/triathlon↗

Triathlon

A subreddit dedicated to the sport of triathlon, and all of its constituent components, quirks, and joys.

286k subscribers857 posts / mo in Sep 2026 (incl. ~2% by known bots)724 authors / mosince 2008

r/triathlon has 286k members (+11% over the last 12 months). It gets about 857 posts a month from 724 people. Top topics: Triathlon Training, New Bike Day and Bike Deals and Worthiness.

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Size and growth

How r/triathlon has grown

r/triathlon

Subscriber growth

Subscribers over time

+11%in 12 months · +2.7% in 3 months · +0.6% in 1 month
Oct 2026286k
Growing286k subscribers
Data since Mar 2018Live · through Oct 2026
r/triathlon

Monthly activity

Posts, comments and authors per month

−16%vs Sep 2025 · −16% last 3 months vs the 3 before
Sep 2026857
QuieterPeaked at 1.3k in Jun 2025
Sep 2026: incl. ~2% by known botsData through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/triathlon

Top topics

Share of the subreddit's posts

  1. Triathlon Training7.5%
  2. New Bike Day0.4%
  3. Bike Deals and Worthiness0.4%
  4. Zwift Training0.3%
  5. Marathon Training0.3%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. IRONMAN
  2. TrainingPeaks
  3. Slowtwitch
  4. Canyon
  5. Apple

The full report

Everything else about r/triathlon

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