Top 50 Marathons in United Kingdom
This curated ranking covers the 50 largest marathons in United Kingdom, ordered by estimated audience size from Rascasse's anonymized search-behavior signals. Out of 69 marathons tracked in United Kingdom, the 50 ranked here account for the largest measured audience reach. London Marathon, New York City Marathon and Chicago Marathon lead the list with a combined estimated audience of 4,009,301 people. Across all 50 entries the average audience size is 138,329, and the largest, London Marathon, reaches around 2,554,132 people in United Kingdom. Audience size is the estimated number of unique people in United Kingdom who actively engage with each marathon, derived from search demand signals. Rankings reflect search-behavior signals collected across United Kingdom and are refreshed weekly.
Ranking
| Rank | Name | Audience size | Country share | Subtype | Category |
|---|---|---|---|---|---|
| 1 |  London Marathon |
2,554,132 | 76.8% | Marathon | Sports |
| 2 |  New York City Marathon |
742,836 | 10.1% | Marathon | Sports |
| 3 |  Chicago Marathon |
712,333 | 9.9% | Marathon | Sports |
| 4 |  Berlin Marathon |
501,516 | 11.2% | Marathon | Sports |
| 5 |  Brighton Marathon |
368,046 | 66.6% | Marathon | Sports |
| 6 |  Greater Manchester Marathon |
260,279 | 70.7% | Marathon | Sports |
| 7 |  World Marathon Majors |
231,424 | 8.6% | Marathon | Sports |
| 8 |  Cardiff Half Marathon |
214,420 | 67.3% | Marathon | Sports |
| 9 |  Tokyo Marathon |
152,898 | 6.1% | Marathon | Sports |
| 10 |  Edinburgh Marathon |
122,786 | 67.2% | Marathon | Sports |
| 11 |  Reading Half Marathon |
98,743 | 89.8% | Marathon | Sports |
| 12 |  Paris Marathon |
85,425 | 6.8% | Marathon | Sports |
| 13 |  Boston Marathon |
82,697 | 1.7% | Marathon | Sports |
| 14 |  Marathon des Sables |
77,817 | 4.3% | Marathon | Sports |
| 15 |  Dublin Marathon |
64,803 | 24.2% | Marathon | Sports |
| 16 |  Paris Half Marathon |
54,510 | 13.1% | Marathon | Sports |
| 17 |  Brooklyn Academy of Music |
53,246 | 5.0% | Marathon | Arts & Culture |
| 18 |  Loch Ness Marathon |
50,840 | 61.7% | Marathon | Sports |
| 19 |  Badwater Ultramarathon |
50,650 | 9.7% | Marathon | Sports |
| 20 |  Amsterdam Marathon |
37,851 | 6.8% | Marathon | Sports |
| 21 |  Rome Marathon |
36,595 | 8.2% | Marathon | Sports |
| 22 |  Belfast Marathon |
34,536 | 85.1% | Marathon | Sports |
| 23 |  Rotterdam Marathon |
30,075 | 6.8% | Marathon | Sports |
| 24 |  Comrades Marathon |
22,467 | 17.0% | Marathon | Sports |
| 25 |  Mumbai Marathon |
21,874 | 4.1% | Marathon | Sports |
| 26 |  Gold Coast Marathon |
19,109 | 4.3% | Marathon | Sports |
| 27 |  Oslo Marathon |
17,836 | 9.6% | Marathon | Sports |
| 28 |  Stockholm Marathon |
16,269 | 5.2% | Marathon | Sports |
| 29 |  Barcelona Marathon |
15,920 | 4.8% | Marathon | Sports |
| 30 |  Great Wall Marathon |
14,509 | 16.1% | Marathon | Sports |
| 31 |  Miami Marathon |
13,454 | 6.3% | Marathon | Sports |
| 32 |  San Francisco Marathon |
13,361 | 6.0% | Marathon | Sports |
| 33 |  Prague Marathon |
12,899 | 8.5% | Marathon | Sports |
| 34 |  Rock 'n' Roll Marathon Series |
11,812 | 0.5% | Marathon | Sports |
| 35 |  New York City Half Marathon |
11,470 | 1.1% | Marathon | Sports |
| 36 |  Portland Marathon |
11,238 | 12.0% | Marathon | Sports |
| 37 |  Dallas Marathon |
10,658 | 14.3% | Marathon | Sports |
| 38 |  Houston Marathon |
10,162 | 5.1% | Marathon | Sports |
| 39 |  Honolulu Marathon |
9,794 | 5.5% | Marathon | Sports |
| 40 |  Venice Marathon |
8,603 | 4.8% | Marathon | Sports |
| 41 |  Hamburg Marathon |
7,813 | 6.7% | Marathon | Sports |
| 42 |  Jungfrau Marathon |
7,165 | 3.7% | Marathon | Sports |
| 43 |  Original Mountain Marathon |
6,767 | 87.5% | Marathon | Sports |
| 44 |  Marine Corps Marathon |
6,690 | 2.2% | Marathon | Sports |
| 45 |  Melbourne Marathon |
5,877 | 2.6% | Marathon | Sports |
| 46 |  Florence Marathon |
5,682 | 3.8% | Marathon | Sports |
| 47 |  Big Sur International Marathon |
5,282 | 1.8% | Marathon | Sports |
| 48 |  Rock 'n' Roll San Diego Marathon |
4,793 | 4.5% | Marathon | Sports |
| 49 |  Twin Cities Marathon |
3,660 | 4.4% | Marathon | Sports |
| 50 |  TCS Amsterdam Marathon |
2,838 | 5.2% | Marathon | Sports |
Frequently asked questions
How is this Top 50 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 2,554,132 people in United Kingdom.
Methodology
Audience sizes are estimated from anonymized search-behavior signals across United Kingdom. Lists below 5 entries are not published. See methodology for full details.