What is the Double Down challenge?

The Double Down challenge is a special achievement for runners who complete the 5K on Saturday and either the Full or Half Marathon on Sunday, earning them a commemorative medal.

Where does the weekend's festivities begin?

The festivities kick off in Gulfport with packet pickup and the Saturday races, which are held at the Centennial Plaza Resort.

All races

9 weeks out

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All races

9 weeks out

Keesler Federal Mississippi Gulf Coast Marathon

Saturday, December 12, 2026Biloxi, MS1 Miles – Marathon

Celebrate a decade of coastal running at the 10th Anniversary Keesler Federal Mississippi Gulf Coast Marathon, a vibrant festival showcasing the best of the Gulf Coast. Runners will 'Cross the Coastline' on a stunning route that stretches from Pass Christian to Biloxi, offering breathtaking views of the Gulf of Mexico. The weekend is packed with excitement, featuring the Chevron Kids Marathon, the Hippie Fish 5K, and the unique Fly Llama Grand Slam Beer Mile. Sunday’s main events, the Full and Half Marathons, provide a picturesque journey along the beach as the sun rises. Participants looking for an extra challenge can tackle the Double Down, which rewards those who complete both a Saturday 5K and a Sunday race. The experience concludes with a lively Finish Festival at Keesler Federal Park, complete with hot food, cold beer, and a jumbotron to celebrate every finisher's achievement.