Rascasse Audience Intelligence

Ironman World Championship Fan Demographics in United States

Ironman World Championship has an estimated audience of 2.4M people in United States.

#1among Triathlon in United States#151among events in United States#1092in Sports

The average Ironman World Championship fan in United States is 36.2 years old, balanced, and lives primarily in California.

By number of fans, Ironman World Championship ranks #1 among the 47 objects in Triathlon in United States — 277.8× the group median.

Its fans are 2.9 years younger than the group average of 39.1.

Women make up 46.8% of the fan base, 5.6 percentage points more than the group average.

Compared with the other 46 objects in Triathlon, Ironman World Championship fans stand out for their interest in Spartan Race Training, Stephen Curry and NBA playoffs.

Interest is seasonal: May, September and October account for 38% of the year's searches, January is the quietest month.

Most fans live in California, Texas, Florida.

Top affinities include Spartan Race Training, Stephen Curry, NBA playoffs, with strongest over-indexing on Spartan Race Training (38.38× the country average).

Demographically, the Ironman World Championship audience skews balanced with an average age of 36.2, and over-indexes on personality traits such as Healthy Lifestyle, Extroversion.

The typical Ironman World Championship fan in United States is balanced, around 36.2 years old, with strong Healthy Lifestyle tendencies and a notable affinity for Spartan Race Training.

Category: Sports · Type: Event · Subtype: Triathlon

Data status: Q3/2026 · Source & method

Section 01

At a glance

Audience size
2.4M
in United States
Gender
46.8%♀
53.2% male
Age
36.2
average years
Country rank
#12439
among all objects in United States
Fig. 01

Search interest · 12-month trend

+77%
vs. last year
JanMarMayJulSepNov
Monthly searches · Source: Rascasse Solution
Section 02

Demographics of Ironman World Championship fans

46.8% are female, 53.2% are male, average age 36.2.

Fig. 02

Gender split

46.8%
Female
53.2%
Male
Demographic split for Ironman World Championship audience in United States
MetricValue
Female46.8%
Male53.2%
Average age36.2
Estimated audience size2.4M
Fig. 03

Age distribution

Ø 36.2
average years
Age distribution of the Ironman World Championship audience in United States
Age bracketShare%
16-2426%
25-3423%
35-4421%
45-5419%
55+11%
Fig. 04

Worldwide distribution

34.1%

of the worldwide Ironman World Championship audience comes from United States.

Worldwide audience distribution share by country for Ironman World Championship
CountryShare
United States34.1%
United Kingdom8.6%
Germany6.3%
Section 03
Affinity (×) = how much more likely a member of this audience is to live in a region than the United States average. Example: 2.0× means twice as concentrated as the national baseline.

Geography

Fig. 05

Top regions by affinity

Ironman World Championship fans by region: top regions in United States
#RegionReachAffinity×
01Hawaii~100K11.02×
02California~300K1.13×
03Colorado~50K1.11×
04Texas~200K1.10×
05Massachusetts~60K1.10×
06Florida~200K1.09×
07Idaho~10K1.09×
08Illinois~100K1.08×
09Nebraska~20K1.07×
10Washington~60K1.05×
11Connecticut~30K1.04×
12Utah~20K1.03×
13Alaska~5K1.03×
14Washington, District of Columbia~5K1.03×
15Minnesota~40K1.02×
16Iowa~20K1.00×
17Wisconsin~40K0.99×
18Oregon~30K0.99×
19South Dakota~6K0.97×
20Indiana~50K0.96×
21North Dakota~5K0.96×
22North Carolina~80K0.95×
23New Jersey~60K0.95×
24Kansas~20K0.95×
25Virginia~60K0.94×
26New York~100K0.93×
27Pennsylvania~90K0.93×
28Georgia~80K0.93×
29Arizona~50K0.93×
30Maine~9K0.93×
31Montana~7K0.93×
32Delaware~7K0.93×
33Vermont~4K0.93×
34Missouri~40K0.92×
35Oklahoma~30K0.91×
36Michigan~70K0.90×
37Maryland~40K0.90×
38Nevada~20K0.90×
39New Hampshire~9K0.90×
40Tennessee~50K0.88×
41Rhode Island~7K0.88×
42Kentucky~30K0.87×
43New Mexico~10K0.87×
44Louisiana~30K0.86×
45Arkansas~20K0.86×
46South Carolina~30K0.85×
47Mississippi~20K0.85×
48Alabama~30K0.83×
49Ohio~70K0.82×
50West Virginia~10K0.80×
Fig. 06

Affinity by region

Affinity by region — Ironman World Championship, United States
0.80×1.00×11.02×
Section 04
Brands and objects ranked by affinity with this audience. Values above 1.0× mean over-representation compared with the country average.

Audience interests & affinities

Fig. 07

Top cross-interests, ranked by affinity

Affinities of the Ironman World Championship audience vs. the country average
#·InterestCategoryAffinity×
01Spartan Race TrainingSports38.38×
02Stephen CurrySports4.01×
03NBA playoffsSports3.56×
04NBA FinalsSports3.47×
05San Francisco 49ersSports3.37×
06Kansas City ChiefsSports3.34×
07Chicago BullsSports3.18×
08Boston CelticsSports3.09×
09Green Bay PackersSports3.00×
10Pittsburgh SteelersSports2.96×
11New York YankeesSports2.75×
12Los Angeles LakersSports2.71×
13Millie Bobby BrownMovies & TV2.66×
14ESPNSports1.98×
15NikeFashion & Accessoires1.96×
16FIFA World CupSports1.73×
17BeautyBeauty & Wellness1.55×
18ShoesFashion & Accessoires1.55×
19SpotifyMusic & Radio1.55×
20NBASports1.50×
Section 05
Strongest and weakest personality traits of this audience (1.0 = country average).

Personality of the Ironman World Championship audience

Fig. 08

Deviation from the national baseline

↑ What stands out
The strongest tendencies
Personality traits of the Ironman World Championship audience vs. the country average · What stands out
TraitClusterDeviationScore
Healthy LifestyleBALANCE1.33×
ExtroversionTHRILL1.18×
Design AffinityPREMIUM1.16×
0×1.00× baseline2×
↓ Rather not
The weakest tendencies
Personality traits of the Ironman World Championship audience vs. the country average · Rather not
TraitClusterDeviationScore
Need for SecurityCONSERVATISM0.48×
Price SensitivityPREMIUM0.56×
Community OrientationOPEN0.58×
0×1.00× baseline2×
Appendix

Explore more audiences

Source & method

Source
Rascasse Solution, own modelling
What “fans” means here
Estimated number of people in United States with measurable interest in Ironman World Championship over the last 12 months. Modelled, not counted; people interested in several events count for each of them.
Data basis
Anonymised behavioural signals: search demand, social media signals, sponsorship and event data. Not a survey.
Period
10/2025 – 09/2026 · updated quarterly · data status Q3/2026
Confidence
high gender and age data available and an audience of at least 100,000 people

Cite as: “Rascasse Solution, Q3/2026, rascasse.com/explore/us/ironman-world-championship-19389” · Methodology