How to read this list
Rank
Position in the Top 71, sorted by audience size from largest to smallest. Updated weekly.
Audience size
Estimated number of unique people in United Kingdom who actively engage with this audience, derived from anonymized search-behavior signals.
Country share
Share of the global audience that is active in United Kingdom. A higher value means the audience is more locally concentrated here.
Avg age
Average age in years across the people who engage with this audience in United Kingdom, derived from anonymized search-behavior signals. A dash means demographic data is not yet available.
Female share
Share of women among the people who engage with this audience in United Kingdom. 50% is gender-balanced; values above mean female-skewed, below mean male-skewed.
Ranking
| Rank | Audience | Audience size | Country share | Avg age | Female share | Subtype |
|---|---|---|---|---|---|---|
| 1 |  London Marathon |
2.6M | 77.1% | 42.9 | 57.6% | Marathon |
| 2 |  New York City Marathon |
743k | 9.5% | 38.9 | 52.4% | Marathon |
| 3 |  Chicago Marathon |
712k | 9.3% | 40.6 | 56.0% | Marathon |
| 4 |  Berlin Marathon |
501k | 10.3% | 40.0 | 51.4% | Marathon |
| 5 |  Brighton Marathon |
367k | 66.2% | 43.9 | 49.7% | Marathon |
| 6 |  Greater Manchester Marathon |
261k | 70.7% | 46.7 | 54.5% | Marathon |
| 7 |  World Marathon Majors |
231k | 8.5% | 40.6 | 53.3% | Marathon |
| 8 |  Cardiff Half Marathon |
214k | 67.3% | 44.8 | 56.6% | Marathon |
| 9 |  Tokyo Marathon |
153k | 5.9% | 38.6 | 52.4% | Marathon |
| 10 |  Edinburgh Marathon |
122k | 63.9% | 44.8 | 57.5% | Marathon |
| 11 |  Reading Half Marathon |
98k | 89.6% | 40.6 | 55.7% | Marathon |
| 12 |  Paris Marathon |
85k | 7.5% | 42.4 | 46.1% | Marathon |
| 13 |  Boston Marathon |
83k | 1.7% | 40.5 | 56.8% | Marathon |
| 14 |  Marathon des Sables |
77k | 3.6% | 41.1 | 43.5% | Marathon |
| 15 |  Dublin Marathon |
65k | 25.1% | 43.0 | 53.0% | Marathon |
| 16 |  Paris Half Marathon |
54k | 15.3% | 38.7 | 51.1% | Marathon |
| 17 |  Loch Ness Marathon |
51k | 61.6% | 44.9 | 58.6% | Marathon |
| 18 |  Badwater Ultramarathon |
51k | 9.8% | 43.6 | 57.4% | Marathon |
| 19 |  Amsterdam Marathon |
38k | 6.5% | 41.0 | 50.5% | Marathon |
| 20 |  Rome Marathon |
37k | 7.7% | 39.5 | 59.1% | Marathon |
| 21 |  Belfast Marathon |
34k | 84.0% | 40.2 | 60.6% | Marathon |
| 22 |  Rotterdam Marathon |
30k | 6.8% | 38.2 | 42.3% | Marathon |
| 23 |  Comrades Marathon |
23k | 17.2% | 52.3 | 38.8% | Marathon |
| 24 |  Mumbai Marathon |
22k | 4.0% | 41.3 | 51.5% | Marathon |
| 25 |  Gold Coast Marathon |
19k | 4.3% | 40.9 | 55.8% | Marathon |
Want the full picture for any of these audiences?
Open any profile to see psychographics, top regions, peer affinities and demographic splits — all derived from the same anonymized signals.
Frequently asked questions
How is this Top 71 list compiled?
Rascasse aggregates anonymized search-behavior signals across United Kingdom and ranks each marathon 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 marathon in United Kingdom?
London Marathon currently leads with an estimated audience of 2.6M people in United Kingdom.