2025 Marathons

Missouri 2025 Marathons

Your complete Missouri 2025 marathon calendar. Find every marathon happening in Missouri in 2025 with comprehensive race details, registration information, and official results, including the Weldon Spring Trail Marathon (St. Charles), Greater St. Louis Marathon (St. Louis), and Muddy River Marathon (Cape Girardeau).

Each marathon listing includes a 2025 marathon guide including dates, locations, course details, weather conditions, and relevant links for registration and more information. We maintain the most current results database, publishing official results on race day, plus complete 2024 results for year-to-year comparison.

Greater St. Louis Marathon

St. Louis, Missouri

April 26, 2025

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The Greater St. Louis Marathon offers runners a dynamic course that winds through historic neighborhoods like Soulard and the Central West End, featuring crossings over the Mississippi River and views of the iconic Gateway Arch. This marathon not only tests endurance with its rolling hills but also celebrates the city's vibrant spirit through enthusiastic community support and engaging events like the National Running Club Championships, making it an unforgettable experience.

Muddy River Marathon

Cape Girardeau, Missouri

May 3, 2025

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The Muddy River Marathon in Cape Girardeau, Missouri, offers runners a scenic loop course, weaving through iconic landmarks like the Bill Emerson Bridge and Old St. Vincent's Church, with a moderate elevation gain of 832 feet. This well-organized event, scheduled for May 3, 2025, combines community spirit and charity, having raised significant funds for local non-profits, making it a meaningful and rewarding experience for participants of all levels.

MO' Cowbell Marathon

St. Charles, Missouri

October 5, 2025

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The MO' Cowbell Marathon in St. Charles, Missouri, features a mostly flat, looped course that navigates both urban and rural landscapes, with highlights including the scenic Katy Trail and a crossing of the iconic Missouri River. Known for its festive, community-driven atmosphere, this Boston-qualifying race offers runners a unique blend of challenging segments, lively cowbell-wielding supporters, and rewarding post-race festivities.

Kansas City Marathon

Kansas City, Missouri

October 18, 2025

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The Kansas City Marathon challenges runners with its hilly 1,200-foot elevation loop through the city's heart, offering views of iconic landmarks like the Liberty Memorial and neighborhoods such as Westport and the Power and Light District. Known for its enthusiastic community support, the race provides an energizing atmosphere with pace teams and frequent aid stations, ensuring a memorable experience for all participants.

Bass Pro Shops Conservation Marathon

Springfield, Missouri

November 2, 2025

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The Bass Pro Shops Conservation Marathon in Springfield, Missouri, takes runners on a picturesque journey through the Ozarks, featuring a mix of flat stretches and rolling hills that wind past iconic landmarks like Route 66 and Missouri State University. As a Boston qualifier, this race not only challenges marathoners with its scenic course but also offers a warm community atmosphere, complete with pacing teams and local support, making it a rewarding experience for both novices and seasoned runners.