The Marlborough Horse Trials

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The Marlborough Horse Trials

Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from The Marlborough Horse Trials, Farm, Rosaryville State Park, Upper Marlboro, MD.

www.marlboroughhorsetrials.org Since 1992, the Marlborough Horse Trials, held in Rosaryville State Park, has proven a signature event of the fall season in Area II and a gem for eventers throughout the region.

08/31/2026

We still need more volunteers for the 2026 Marlborough Horse Trials on September 12 and September 20!! Don’t forget our volunteers get passes for free XC schooling on 9/13 and 9/19, along with free lunch, our eternal gratitude, and a custom MHT hat ;) 🧢. Grab a friend and sign up today!! www.eventingvolunteers.com

08/30/2026

Join Promise Landing Farm Inc for a super clinic with Meghan O'Donoghue in the run up to our Unrecognized competition. Sign up today! 🌟🌟🌟

08/29/2026

Got a question? We’ve got answers!! Sign up ASAP for our recognized competition on 9/12 - entries close soon! www.evententries.com and sign up to volunteer via www.eventingvolunteers.com - we have lunch, swag, and XC schooling passes for our volunteers 🔥 🧢.

08/28/2026

MHT volunteers!! We love making sure you stand out from the crowd and we have a fresh crop of MHT hats for 2026. Sign up to volunteer today and earn yours for this season. Ruby Gaches thanks you for volunteering!! She is offering in person kisses on 9/20 during the Unrecognized competition. 😘 🧢 www.eventingvolunteers.com

08/26/2026

Calling all Interscholastic Eventing League riders 📣 join us for the 2026 Marlborough Horse Trials and be part of our IEL challenge! Coaches, you know what to do 😉. Sign up today www.evententries.com. 💪🏼

08/25/2026

Welcome USPC riders!! The Marlborough Horse Trials can’t wait to see you at our Recognized and Unrecognized competitions in September. We have special awards for the lowest scoring pony club rider in each division! Volunteer with us and earn free passes for XC schooling on 9/13 and 9/19 to prep for Unrecognized. Sign up today on evententries.com! We can’t wait to see you in the park!

08/23/2026

Entries are live! And early bird is closing fast! Don't miss out on our amazing early bird prizes, including a gift basket with certificate from 5 Star Magnawave and so much more!

September 12 - Recognized Event - Sign up here! Early Bird closes 8/25. https://evententries.com/ ==

September 20 - Unrecognized Starter Horse Trials - Sign up here!
https://evententries.com/ ==

Interested in volunteering for either event?
Sign up today on eventingvolunteers.com for Recognized on 9/12 here: https://www.eventingvolunteers.com/events/19138/signup and our Starter Horse Trials on 9/20 here: https://www.eventingvolunteers.com/events/19137/signup

For the Recognized event - be sure to toggle between days since we have openings for volunteers on 9/10, 11, and 12 as we prep and deliver your favorite event of the season!

08/17/2026

Competitors!!! Get your entries in for the 2026 Marlborough Horse Trials!! Our early bird prizes are amazing 🤩 and entry closes on August 25 for our Recognized Event on September 12. Sign up today, beat the rush, and end your summer in style 😎💅.

08/13/2026

Calling all sponsors!! 📣 Now is the time to sign up to sponsor the 2026 Marlborough Horse Trials. Your business or service will be featured in custom signage and professional event photography by the amazing team Erin Gilmore Photography AND, we will feature you in our social media. Our sponsors and partners make our 🌎 go round - so inquire today!!!

08/10/2026

Coming in strong this Monday 💪🏼- entries are live for the 2026 Marlborough horse trials and we need you to make our event a success! Sign up today to volunteer and be part of our elite crew on eventingvolunteers.com. Sign up for our recognized competition on September 12 and our unrecognized horse trials on September 20 on evententries.com. Our team has the most fun bringing you this special competition each year and we can’t wait to make you part of our family 🫶🥰🐴. Sign up today!

Address

Rosaryville State Park
Upper Marlboro, MD
20772

Website

http://www.marlboroughhorsetrials.org/

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