Humboldt Bay Marathon preview: a coastal gem with a new waterfront course

Paavo Nurmi Marathon Preview: Wisconsin’s Longest-Running Marathon

The San Francisco Marathon Preview: Run the Bridge, Own the Bay on July 27, 2025

Aspen Valley Marathon Preview: High-Altitude Adrenaline and Summer Speed Await on July 19, 2025

MAD Marathon Preview: Beauty and Brutality Collide on July 13, 2025, in Vermont’s Mad River Valley

Weekly Highlights: Marathon Results from 7/21 – 7/27

Wellington Marathon

Post-Race Review/ Results

Andy Good won the 2025 Wellington Marathon in 2:25:25 while Mel Aitken won the women's race in 2:52:52 .

Record-breaking winners in Wellington Marathon

Jakarta International Marathon

The 2025 Jakarta International Marathon was successfully held on Sunday, June 29, with  31,000 participants in all distances.

Over 31,000 runners join 2025 Jakarta International Marathon

Safaricom Marathon

Samson Lemayan won the 2025 Lewa Safari Marathon in 2:28:35 while Mercy Kwambai won the women's race in 2:47:17.

Kwambai defends Lewa Marathon title as Lemayan claims men's race

Odds And Ends

Training/ Health

Eliud Kipchoge succeeded on his second attempt to run a marathon under 3 hours, a lesson Faith Kipyegon takes to heart as her first attempt to become the first woman to break the four-minute mile barrier ended in a heartbreak.

Faith Kipyegon Reflects on The Lessons She Learnt From Eliud Kipchoge as She Eyes Second Future ‘Breaking4’ Attempt

Sydney Marathon

Pre-Race Review/ Lineup

The 2025 Sydney Marathon in August will have the strongest female elite marathon runners ever assembled on Australian soil.

Historic elite female field set to descend on iconic TCS Sydney Marathon course in 2025

The 2025 Lewa Safari Marathon on Saturday, June 29, will be targeting to raise $1 million for wildlife conservation efforts.

Over 1,400 athletes expected at 25th Edition of Lewa Safari Marathon

Mont Blanc Marathon

Watch the 2025 Mont Blanc Marathon on Sunday, June 29, on this YouTube link.

Marathon du Mont-Blanc: where to see the race live

Richmond Marathon

The 2025 Richmond Marathon on November 15 is set to have another record-breaking number of participants in all distances, bigger than the 21,000 runners last year.

Richmond Marathon 2025 will be bigger than ever as second sell-out seems imminent

Olympics 2024 (Men)

Canadian Running photographer Nick Iwanyshyn won the 2024 Sports Feature Photo of the Year for that iconic image of Sifan Hassan as she  won the Olympic Gold in the women’s marathon.

Canadian Running photographer wins National Picture of the Year award

Victoria Falls Marathon

The 2025 Victoria Falls Marathon on July 6 will have 7000 participants in all distances and a positive economic impact on Zimbabwe's economy.

Victoria Falls Marathon expected to draw 5 000 participants

The 2025 Wellington Marathon on Sunday, June 29, is expected to have more than 4,000 runners in all distances.

Wellington Marathon - Record Running For Wellington this Weekend

Leadville Trail Marathon

The 2025 Leadville Trail Marathon on Saturday, June 28, expects 8,000 runners, spectators, crews and media personnel on the site.

Life Time Leadville Race Series Kicks Off June 28

Williams Route 66 Marathon

The Route 66 Marathon on November 23 unveils its medal for its 20th anniversary featuring a Route 66 landmark, the Blue Whale of Catoosa .

Route 66 Marathon reveals 20th anniversary medal design

Marathon du Vignoble d'Alsace

2025 Marathon du Vignoble d'Alsace women's champion, Emilie Tissot, received her weight in bottles of wine as part of her grand prize on Sunday, June 22.

French runner awarded 51 bottles of wine after winning vineyard marathon

Athletics Kenya expressed interest in submitting their bid to host either the 2029 or 2031 World Championships after World Athletics officially opened the bidding process.

Kenya's Opportunity as Bidding Process for 2029 and 2031 World Athletics Championships Opens

Running Grand Prix Bedford Autodrome Marathon

I m Bound for Boston Denver

I'm Bound for Boston - Denver

Run for the Elk Race Festival Marathon Half Marathon 10K and 5K

Run for the Elk Race Festival: Marathon, Half Marathon, 10K and 5K

Jack and Jill's Downhill Saturday Marathon

König Ludwig Marathon

Halfway To The Holidays Marathon 1 2 Marathon 1 4 Marathon 5k Kids Run

Halfway To The Holidays Marathon, 1/2 Marathon, 1/4 Marathon, 5k & Kids Run

Enchanted Forest

Conquer the Canyon Marathon Race Festival

Conquer the Canyon Race Festival

Run the Pier Running Festival

Grand Island Trail Run

Grand Island Trail Run 2025

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There is a reason the most successful marathon training programs often start not with days, or weeks, but often 2-3 months of predominately slow running (90-95% of volume). Regular aerobic running with gradually increasing volume leads to specific physiological adaptations that are not fully achieved through other types of workouts. The key adaptations being: Increased size of mitochondria These ‘powerhouse’ cells are the main delivery source of energy (ATP) to your working muscles, and the bigger they are the more efficient this energy can be delivered. Increased number of mitochondria That’s right! When progressing your easy runs, mitochondrial biogenesis occurs, and the more delivery vehicles of energy you have the later fatigue sets in. Dilated capillaries With a wider runway, oxygen can more easily be delivered, and carbon dioxide more easily removed. Elongated capillaries The longer the runway the more muscles cells can receive oxygen in a quick and efficient way. With these adaptations established, it is possible to maintain aerobic activity for longer durations at higher speeds and recover more quickly – all to a more elite level of which otherwise simply would not have occurred without the slow aerobic base you worked so patiently to build. With the ‘big base’ in place you have developed long, wide highways of capillaries now carrying a larger fleet of larger energy-carrying mitochondria, and as you introduce speed, you’ll soon find an ‘8*1 mile fast with a 2 min rest’ workout all of sudden becomes within reach.