This ain't your Mothers 50k

Middleburg, United States • 25 Jan 2026

This ain't your Mothers 50k & Trail Marathon is an annual trail running event held in Middleburg, Florida, within the scenic Jennings State Forest near Jacksonville. The race features multiple distances including a 50K, trail marathon, 12K, and 7K. The courses traverse the diverse Pioneer Trail, known for its unique terrain uncommon in Florida, including technical and vertical sections, waterfalls, stream crossings, and scenic vistas overlooking Black Creek Ravines. The 50K is an out-and-back route covering all trail sections, while the marathon covers a portion with added mileage. The event emphasizes fun and enjoying nature, with time limits of 11 hours for the 50K and 10 hours for the marathon. Visit the organization's website for the most recent information.

Race information

50 km
50k
26 mi
Trail Marathon
12 km
12k
7 km
Visit the organization's website for the most recent information.
Trail runs nearby

The Sombrero Sizzler is an annual running and walking event held at Cecil Field in Jacksonville, Florida. Participants can choose from 3, 6, 9, or 12-hour races on a flat, fast 1.25-mile paved loop, surrounded by shaded pine trees. The course features minimal turns and is suitable for both individua..

Sufferfest on Section 4 is a challenging 5-hour endurance event held in Middleburg, Florida, along the technical and hilly Section 4 of the Pioneer Trail. Participants traverse a roughly 2.5-mile out-and-back single-track course featuring switchbacks and scenic overlooks of Black Creek. The event em..

S.O.S. in Middleburg, Florida, is a unique running event held on the scenic Sandridge Trail within Jennings State Forest. Participants can choose from a 9K distance or time-based challenges of 3, 6, or 12 hours, all run on a 2.75-mile loop.The race features a cupless format, encouraging runners to b..

The Emerald Trail event in Jacksonville, Florida, offers a 5K Run/Walk, a 10K Run, and a one-mile run/walk, all held near the Lavilla School area at 633 North Lee Street. This race aims to raise funds for the Emerald Trail and welcomes participants of all ages, with discounts for those 10 and under..

The Festivus 100 Miler Trail Run, held in Middleburg, Florida, offers multiple race distances including 100 miles, 50 miles, 35 miles, 14 miles, and 7 miles. This event caters to a wide range of trail runners, from ultra-distance athletes to those seeking shorter challenges. The race takes place on..

The Sombrero Ultra Running Festival (SURF) is an endurance running event held in Middleburg, Florida, at the Clay County Regional Sports Complex. It offers a variety of timed race distances including 3, 6, 12, 24, and 48-hour events, with both day and night options. The festival aims to accommodate..