Welcome to Seneca Creek Greenway Trail Marathon, 50K & Relay!

Seneca Creek Greenway Trail Race
Saturday, March 3, 2018 @ 7:00am



Registration is now open for the 2018 Seneca Creek Greenway Trail Race! Please join us for a day on the trails with a fun post-race picnic after! Please read below for more information on the location, course, and post-race.

Registration: Registration is now open. The cost is $25 for MCRRC members and $35 for non-members (same for the marathon or 50k). The cost for relay teams is $50. All runners will start at 7:00am. Individual runners can choose at the decision point for a shorter “marathon” (~28 miles) or run a loop around the lake to complete a 50k. The registration fee covers the post-race picnic. The registration fee does not include a race shirt, which can be purchased for an additional fee during registration. Unfortunately, we are unable to offer refunds or bib exchanges if you change your mind — even if the race is cancelled or moved due to weather.

Weather: March weather is unpredictable, please check the forecast and come prepared. While 2017 was near perfect, the race was rescheduled in 2015 due to a snowstorm!

Start/Finish Location, Parking, & Bib Pickup

Start/Finish: Seneca Creek State Park, Nuthatch Pavilion (park map)

Seneca Creek State Park
11950 Clopper Road
Gaithersburg, MD, 20878

(Google map; GPS: 39.141111, -77.266222)

Directions: From I-270, exit at Clopper Rd W (MD 117). Proceed about 2 miles to the Seneca Creek State Park entrance on your left.

Parking: You will be directed to the parking area after you pass the gatehouse. Parking will be at the parking lot at the Nuthatch Pavilion and along the entry drive. Please follow the instructions of the parking volunteers. Please consider carpooling.

Packet Pick-up: Packet pick-up will be race day morning at Nuthatch Pavilion at the starting area.

The Chip: Please ensure your bib is visible on your front at all times during the race.

Course Description, Aid Stations, & Cut-off Times

Course Maps: Please check out our course map – with markers for parking, start, aid stations, relay exchange, decision point (marathon vs. 50k), and finish. All runners will start at the same time and individual runners can choose to stop at a “marathon” (~28 miles) or take a loop around the lake for the 50k.

The course will be rolling hills, with a total elevation gain of ~ 2200ft. Please note the “marathon” is closer to 28 miles. Expect mud, ice, rocks, roots, and slick crossings – be careful! This is a cup-free event.

Aid Stations: Spaced every 5-8 miles, with water, snacks, and lemon Gatorade.

Aid station Distance Amenities Cutoff
Start 0 Porta-potties 7:00 am start
Rt 28 7.3 miles Drink, snacks, porta-potty
Relay Exchange 14 miles Water only
Berryville 15 miles Drinks, snacks, drop bags 11am (50k)

11:30 am (marathon)

Rt 28 19.5 miles Drink, snacks, porta-potty
Riffle Ford Rd. 26.8 miles Drink, snacks
Decision Point 27.7 miles (No-aid) 2:25 pm
Marathon Finish ~28 miles Picnic @ Nuthatch Pavilion 4pm
50K ~31.9 miles Picnic @ Nuthatch Pavilion 4pm

Bibs & Timing:
 We will use chip timing. The chips will be taped to the back of your bib — please remove and fasten it to the laces of one of your shoes. Relay participants will have 1 bib and 1 chip that will be exchanged at the hand-off point. If the second runner doesn’t not have a bib or chip at the finish they will not be scored.Water bottles: Every runner is expected to carry their own water bottle. The aid stations will not have cups.

Drop Bags: We will allow 1 bag drop if anyone needs a change of shoes or particular foods/drink. Put your items in an easily recognizable bag of your choosing CLEARLY marked with your name (easily identifiable makes for easily retrieved).

DNF’s: If for any reason you find yourself unable to finish your race, please make your way to the nearest aid station and let the volunteers know so we can get a ride for you back to the park. 

To account for all runners – please give your chip to the aid station volunteer if you drop.

Safety: Please carry a cell-phone. You must stop at road crossings — CARS a have the right-of-way! Course marshals may be present, but traffic does not stop. The trail may be icy, snowy, muddy with rocks, roots, and slick wooden bridges — pay attention and be careful!

DNF’s: If for any reason you find yourself unable to finish your race, please make your way to the nearest aid station and let the volunteers know so we can get a ride for you back to the park. To account for all runners – please give your chip to the aid station volunteer if you drop.

Spectators: Crew, family, and friends are welcome in the park. There is limited parking for spectators at Black Rock Mill and Riffleford aid stations. Please no spectators at the 118 crossings. Pacers are not allowed.


Picnic: Food and drink will be provided at the finish (Nuthatch Pavilion) for runners and volunteers. A limited selection of food will be provided for spectators as well — spectators please honor this limitation to keep food available for late-finishing runners.

Results and Photos: Results and free high-quality photos are typically available on the MCRRC website with 24 hours of the race.