The world's fastest marathon courses.

One of America's flattest and fastest January marathons — a near-sea-level loop through downtown Houston and Memorial Park with world-class PB credentials.

February's fastest marathon — a flat loop through Seville's old town and riverside promenades in crisp Andalusian winter conditions.

Statistically the world's fastest marathon course — virtually no elevation, sea-level altitude, perfect spring climate. Come to Rotterdam to run your best.

The Baltic's fastest and largest marathon — essentially flat along Riga's Art Nouveau boulevards, through Jūrmala's beach resort, and across the Daugava River bridges.

Australia's fastest marathon — a virtually flat beachside course along the Gold Coast Broadwater and Surfers Paradise in Australia's coolest winter conditions.

The world's fastest marathon course — dead flat, perfectly organised, and the site of more world records than any other race.

America's fastest marathon — a net-downhill point-to-point through Utah's red rock canyon country, the most popular BQ-hunting race in the American West.

One of Europe's fastest marathon courses — a dead-flat loop through Philips' hometown with aggressive pacers, elite competition, and near-zero elevation gain.

The flattest World Major — a loop through 29 of Chicago's neighbourhoods with the most inclusive crowd energy in American marathon running.

A World Athletics Gold Label race and one of North America's most underrated PB courses — flat, fast, and perfectly timed in Toronto's ideal October conditions.

One of Europe's flattest and fastest marathons — looping through Amsterdam's iconic canals and Vondelpark for world-class PB conditions.

Germany's second-fastest marathon course — near-flat with ideal October conditions, consistently producing top-10 world-rankings finish times.

China's fastest marathon — a dead-flat World Athletics Label course through Suzhou's classical garden network, along the ancient Grand Canal, and through the UNESCO-listed water-town of Tongli.

One of the world's oldest and most prestigious elite marathons — a flat point-to-point course through Fukuoka in ideal December conditions, with a history stretching back to 1947.

December's perfect PB race — flat, fast, and held in ideal cool Mediterranean conditions that produce faster times than almost any course on earth.

California's fastest marathon — a net-downhill point-to-point from Folsom to Sacramento, the most popular Boston qualifier on the US west coast.

Oman's capital marathon along the Arabian Sea coast — past the white-domed Sultan Qaboos Grand Mosque, through Muttrah's ancient gold souk waterfront, and along Muscat's pristine Corniche.

World-class organisation, a flat course, and one of January's best weather windows — Dubai offers a genuine PB opportunity in winter sunshine.

Japan's second city delivers a flat, fast February marathon through Osaka's business districts, riverside promenades, and raucous food-centric streets.

A flat beachside marathon along Tel Aviv's Mediterranean coast — through the UNESCO Bauhaus White City, along the Gordon Beach promenade, and through Jaffa's ancient port.

One of the six World Marathon Majors through Tokyo's iconic streets — fast, flat, and phenomenally well-organised.

One of Asia's oldest and most competitive marathons — a tough but rewarding route through Seoul's historic and modern districts in crisp spring conditions.

Sichuan's World Athletics Label marathon — past the Tianfu Greenway, through Chengdu's teahouse-lined alleys, along the Jinjiang River, and into the ancient Jinli Street of China's most liveable city.

Run through Italy's design capital past the Duomo, the Galleria, Castello Sforzesco, and Parco Sempione on a flat, fast course built for PBs.

Poland's most historic city hosts a flat spring marathon past Wawel Castle, the medieval Cloth Hall, the Kazimierz Jewish Quarter, and along the Vistula River.

Germany's third-largest marathon — a flat, fast loop past Hamburg's magnificent Alster lakes, through the Speicherstadt warehouse district, and along the Elbe harbour.

A flat, fast course through one of Europe's most beautiful cities — impeccable organisation, cool spring conditions, and a crowd that treats every runner like an elite.

The world's most celebrated mass participation marathon — past the Tower of London, along the Thames, and through the roar of one million spectators.

Switzerland's most prestigious marathon — along the shores of Lake Geneva past the Jet d'Eau, through the Old Town, and into the vineyards of Lavaux with the Alps reflected in the lake.

A fast, scenic loop through one of Europe's most beautiful medieval cities — cobblestones, baroque spires, and the Charles Bridge all on the race route.

One of the flattest marathons in the world — a welcoming, beautifully organised race through the Danish capital's canals, parks, and harbour in ideal May conditions.

Canada's national capital hosts a flat, fast spring marathon through the Gatineau Park, along the Ottawa River, and past Parliament Hill in peak tulip season.

Uruguay's capital hosts a flat, fast marathon along the Rambla coastal promenade — 22km of waterfront running along the Río de la Plata in Southern Hemisphere winter.

Poland's most atmospheric city marathon — through the Venice of Poland across its network of 100 bridges, past the Gothic cathedral on Tumski Island, and along the Oder river promenades.

Poland's premier marathon — a flat, fast loop through Warsaw's rebuilt historic centre and modern riverbank parks with excellent PB conditions.

Consistently rated America's most beautiful urban marathon — a point-to-point through Minneapolis and St. Paul's famous chain of lakes and riverside parkways.

A flat, fast loop past one of Europe's most magnificent cathedrals — Cologne's marathon uses the Rhine bridges, the Rheinuferpromenade, and the historic Altstadt for exceptional PB conditions.

South America's flattest and fastest marathon — a stunning loop through Buenos Aires' European-style boulevards, Palermo parks, and the Puerto Madero waterfront.

Bavaria's premier marathon — through Munich's English Garden, around the Olympic Stadium, past the Nymphenburg Palace canal, and along the Isar river, finishing in the heart of the city.

China's fastest marathon — a near-flat loop along the iconic Bund waterfront, through Lujiazui's glass skyscrapers, and across the Huangpu River bridges.

The UAE capital's IAAF Gold Label marathon — a virtually flat course along the Abu Dhabi Corniche, past Sheikh Zayed Grand Mosque, through Yas Island's F1 circuit, and along the Arabian Gulf waterfront.

Europe's warmest December marathon — a flat coastal loop through Málaga's old town, along the Paseo Marítimo, and around the harbour in Costa del Sol sunshine.