World’s Fastest Marathons – June 2025 Rankings
June 2025 sub-3 marathon rankings with verified data. A slower month overall, but standout races still emerged worldwide.
June marks the beginning of the summer marathon season — a period when high temperatures start to limit opportunities for fast running in many regions. But a select group of races still stand out, particularly those held at altitude, along coastal routes, or in northern latitudes. These events tend to attract smaller fields but remain popular with sub-3 hopefuls seeking early morning starts, downhill courses, or favourable microclimates.
As always, these rankings apply Sub-3’s standard methodology: 45% of the total score comes from the percentage of sub-3 finishers, 45% from the absolute number of sub-3 runners, and 10% from the fastest winning time. All figures are drawn from verified 2025 results and evaluated using a consistent spreadsheet-based model with no extrapolations or assumptions.
🥇 Grandma’s Marathon
Duluth, Minnesota, United States – 21 June 2025
Grandma’s Marathon dominated the June rankings with the highest sub-3 count, sub-3 percentage, and fastest winning time of the month. Over 500 runners broke three hours on this point-to-point course along Lake Superior, from a field of more than 7,500. The cool early start and net downhill profile continue to make it a magnet for serious amateur athletes.
→ View full profile: Grandma’s Marathon
🥈 Cork City Marathon
Cork, Ireland – 1 June 2025
Cork delivered a strong blend of depth and scale, with over 100 sub-3 runners in a field of just under 2,000. The flat, coastal route and early-summer conditions helped maintain a high sub-3 percentage, placing it second overall in this month’s global rankings.
→ View full profile: Cork City Marathon
🥉 Maratona Do Rio
Rio de Janeiro, Brazil – 22 June 2025
Despite warm conditions, the Rio Marathon attracted a massive field of nearly 15,000 runners and more than 300 sub-3s. The race benefits from early start times and a scenic, coastal course. Its raw numbers pushed it into third place, making it the largest event in the June Top 5.
→ View full profile: Maratona Do Rio
4️⃣ Utah Valley Marathon
Provo Canyon, Utah Valley, United States – 7 June 2025
With a net-downhill course through scenic canyon roads, Utah Valley produced a high percentage of sub-3s from a field of just over 1,300. The elevation drop and early morning start time made it one of the month’s most runner-friendly courses, placing it solidly in the top five.
→ View full profile: Utah Valley Marathon
5️⃣ Missoula Marathon
Missoula, Montana, United States – 29 June 2025
Missoula closed out the month with over 1,100 finishers and a strong amateur showing. While smaller than the other top-ranked events, it maintained a solid sub-3 percentage and delivered a competitive overall score thanks to its cool conditions and supportive local atmosphere.
→ View full profile: Missoula Marathon
6️⃣ Midnight Sun Marathon
Tromsø, Norway – 21 June 2025
Held under the glow of 24-hour daylight, the Midnight Sun Marathon drew over 1,500 runners and delivered 45 sub-3 performances. While not the fastest course, its cool conditions and unique location helped it secure sixth place overall in June.
→ View full profile: Midnight Sun Marathon
7️⃣ Marathon de la Liberté
Normandy, France – 15 June 2025
This historically themed race in Normandy saw over 4,000 finishers and just under 90 sub-3s. While the sub-3 percentage was modest, its field size and consistent amateur presence placed it solidly within the June Top 10.
→ View full profile: Marathon de la Liberté
8️⃣ Brisbane Marathon
Brisbane, Queensland, Australia – 1 June 2025
Brisbane brought in over 2,000 runners and 51 sub-3 finishers on its coastal urban course. Warm conditions were offset by an early start, helping a strong amateur group break three hours. It continues to be one of Australia’s most competitive early-winter marathons.
→ View full profile: Brisbane Marathon
9️⃣ Manitoba Marathon
Winnipeg, Manitoba, Canada – 15 June 2025
With just over 1,000 finishers and 31 sub-3s, the Manitoba Marathon offered a small but efficient platform for fast amateur times. Its flat course and local club presence gave it enough strength to earn a spot in the global June rankings.
→ View full profile: Manitoba Marathon
🔟 Jakarta International Marathon
Jakarta, Indonesia – 29 June 2025
Despite challenging heat and humidity, Jakarta drew more than 4,000 finishers and 32 sub-3 performances. While its sub-3 percentage was low, the size of the field and strong elite time of 2:16:04 kept it within the global Top 10 for June.
→ View full profile: Jakarta International Marathon
June 2025 Rankings Table
| # | Marathon | Country | % Sub-3s | # Sub-3s | Total Runners | Winning Time |
|---|---|---|---|---|---|---|
| 1 | Grandma’s Marathon | United States | 5–10% | 500–999 | 3k–10k | 02:11:58 |
| 2 | Cork City Marathon | Ireland | 5–10% | 100–499 | 1k–3k | 02:18:56 |
| 3 | Maratona Do Rio | Brazil | 2–5% | 100–499 | 10k–20k | 02:14:18 |
| 4 | Utah Valley Marathon | United States | 5–10% | 50–99 | 1k–3k | 02:15:52 |
| 5 | Missoula Marathon | United States | 2–5% | 50–99 | 1k–3k | 02:21:12 |
| 6 | Midnight Sun Marathon | Norway | 2–5% | 10–49 | 1k–3k | 02:20:27 |
| 7 | Marathon de la Liberté | France | 2–5% | 50–99 | 3k–10k | 02:23:15 |
| 8 | Brisbane Marathon | Australia | 2–5% | 50–99 | 1k–3k | 02:21:38 |
| 9 | Manitoba Marathon | Canada | 2–5% | 10–49 | 1k–3k | 02:26:47 |
| 10 | Jakarta International Marathon | Indonesia | 0.5–1% | 10–49 | 3k–10k | 02:16:04 |
About These Rankings
These rankings are based on verified results from June 2025 and scored using Sub-3’s 45:45:10 system – 45% for the proportion of sub-3 finishers, 45% for the total number of sub-3s, and 10% for the fastest winning time. Read more about our approach on the Rankings Methodology page.
Missing a Marathon?
We only include open-entry road marathons with 1,000+ finishers that have verifiable public results. Elite-only races or events with no published finisher data are excluded. If you believe a race has been missed, please get in touch.