Top 48 Triathlons in United States
This curated ranking covers the 48 largest triathlons in United States, ordered by estimated audience size from Rascasse's anonymized search-behavior signals. Ironman 70.3, Craig (CROWIE) Alexander and XTERRA Triathlon lead the list with a combined estimated audience of 3,313,476 people. Across all 48 entries the average audience size is 93,833, and the largest, Ironman 70.3, reaches around 2,211,222 people in United States. Audience size is the estimated number of unique people in United States who actively engage with each triathlon, derived from search demand signals. Rankings reflect search-behavior signals collected across United States and are refreshed weekly.
Ranking
| Rank | Name | Audience size | Country share | Subtype | Category |
|---|---|---|---|---|---|
| 1 |  Ironman 70.3 |
2,211,222 | 36.8% | Triathlon | Sports |
| 2 |  Craig (CROWIE) Alexander |
782,588 | 59.9% | Triathlon | Sports |
| 3 |  XTERRA Triathlon |
319,666 | 52.5% | Triathlon | Sports |
| 4 |  Escape from Alcatraz (triathlon) |
210,804 | 25.3% | Triathlon | Sports |
| 5 |  Challenge Roth |
146,848 | 30.7% | Triathlon | Sports |
| 6 |  USA Triathlon |
133,370 | 31.2% | Triathlon | Sports |
| 7 |  Ironman Heavymetalweight Championship |
101,693 | 13.7% | Triathlon | Sports |
| 8 |  Dave Scott (triathlete) |
88,281 | 61.6% | Triathlon | Sports |
| 9 |  Ironman World Championship |
72,438 | 8.2% | Triathlon | Sports |
| 10 |  Mark Allen (triathlete) |
69,725 | 14.8% | Triathlon | Sports |
| 11 |  Ironman Triathlon |
49,784 | 1.7% | Triathlon | Sports |
| 12 |  Nancy Álvarez (triathlete) |
44,898 | 93.3% | Triathlon | Sports |
| 13 |  IRONMAN Austria |
35,115 | 34.5% | Triathlon | Sports |
| 14 |  Jan Frodeno |
28,151 | 12.3% | Triathlon | Sports |
| 15 |  Gwen Jorgensen |
24,922 | 85.3% | Triathlon | Sports |
| 16 |  Timothy O'Donnell (triathlete) |
24,745 | 56.5% | Triathlon | Sports |
| 17 |  Chris McCormack (triathlete) |
22,564 | 40.8% | Triathlon | Sports |
| 18 |  Sarah Haskins (triathlete) |
21,150 | 83.6% | Triathlon | Sports |
| 19 |  Alistair Brownlee |
14,376 | 13.6% | Triathlon | Sports |
| 20 |  World Triathlon |
12,125 | 2.1% | Triathlon | Sports |
| 21 |  Andy Potts |
10,981 | 91.8% | Triathlon | Sports |
| 22 |  International Triathlon Union |
10,860 | 9.0% | Triathlon | Sports |
| 23 |  Triathlon LAB |
10,490 | 98.7% | Triathlon | Sports |
| 24 |  Ironman Sweden |
8,009 | 9.4% | Triathlon | Sports |
| 25 |  Jonathan Brownlee |
7,810 | 69.8% | Triathlon | Sports |
| 26 |  Supertri |
5,747 | 13.2% | Triathlon | Sports |
| 27 |  220 Triathlon Magazine |
5,143 | 23.2% | Triathlon | Sports |
| 28 |  Chrissie Wellington |
4,598 | 70.8% | Triathlon | Sports |
| 29 |  London Triathlon |
4,335 | 2.0% | Triathlon | Sports |
| 30 |  ITU Long Distance Triathlon World Championships |
3,933 | 25.6% | Triathlon | Sports |
| 31 | British Triathlon Federation |
3,539 | 15.9% | Triathlon | Sports |
| 32 |  Mirinda Carfrae |
3,270 | 56.8% | Triathlon | Sports |
| 33 |  Sebastian Kienle |
1,917 | 4.3% | Triathlon | Sports |
| 34 |  Triathlon at the Summer Olympics |
1,794 | 52.8% | Triathlon | Sports |
| 35 |  Ironman Germany |
1,526 | 0.8% | Triathlon | Sports |
| 36 |  Helen Jenkins |
1,232 | 84.8% | Triathlon | Sports |
| 37 |  Ironman UK |
899 | 64.3% | Triathlon | Sports |
| 38 |  Nicola Spirig |
849 | 3.5% | Triathlon | Sports |
| 39 |  Saleta Castro |
840 | 11.9% | Triathlon | Sports |
| 40 |  javier gomez noya |
369 | 2.1% | Triathlon | Sports |
| 41 |  Triathlon Magazine Canada |
334 | 17.6% | Triathlon | Sports |
| 42 |  Mario Mola |
303 | 3.7% | Triathlon | Sports |
| 43 |  Hy-Vee Triathlon |
238 | 95.7% | Triathlon | Sports |
| 44 |  Pete Jacobs (triathlete) |
196 | 3.0% | Triathlon | Sports |
| 45 |  Andreas Raelert |
187 | 2.9% | Triathlon | Sports |
| 46 |  Eneko Llanos |
73 | 1.8% | Triathlon | Sports |
| 47 |  Iván Raña |
59 | 0.7% | Triathlon | Sports |
| 48 |  Francisco Javier Gómez Noya |
10 | 5.4% | Triathlon | Sports |
Frequently asked questions
How is this Top 48 list compiled?
Rascasse aggregates anonymized search-behavior signals across United States and ranks each triathlon by its estimated audience size. Only entries with at least 5 measured entities are listed.
How often is the list updated?
The ranking is refreshed weekly from the latest search-behavior data and re-published as a static page.
What is the largest triathlon in United States?
Ironman 70.3 currently leads with an estimated audience of 2,211,222 people in United States.
Methodology
Audience sizes are estimated from anonymized search-behavior signals across United States. Lists below 5 entries are not published. See methodology for full details.