Welcome to Seneca Creek Greenway Trail Marathon & 50K!


Seneca Creek Greenway Trail Marathon & 50k
Saturday, March 4, 2017

Results: Trail Marathon | 50K

Photos: See mcrrcphotos.com.

The Seneca Creek Greenway Trail Marathon & 50k, 2016 version is in the books and now behind us…..congrats to all our badass finishers!

We have received your feedback and quite a lot of nice comments (thank you!) and will be using this info to improve our 2017 version. Please check back with us in the fall for updates on next year’s event. 

Here’s hoping you’ll be able to join us once more as we scamper along the rolling trails of Maryland! 

Race Location:
Seneca Creek State Park
11950 Clopper Road
Gaithersburg, MD, 20878


From I-270, exit at Clopper Rd W (MD 117). Proceed about 2 miles to the Seneca Creek State Park entrance on your left. You will be directed to the parking area after you pass the gatehouse. Parking is limited so please make efforts to carpool.

Course: This is a loop course beginning and ending at Seneca Creek State Park with both races running together until the decision point. Exact course map will be posted upon park


Start Time: Both race options will start promptly at 7am.

Cut offs: The courses will close after 8.5 hours allowing plenty of time for all participants for whatever “extras” the course holds on race day. The finish line will close at 3:30pm.

Registration: We will have online registration only. Please note that registration opens

Monday, December 7, 2015 and will close when we reach our race cap of 400 runners or by Friday, March 4, 2016 whichever comes first.

Cost: MCRRC members $25. Non-members $35

Packet Pick-up: Packet pick-up will be race day morning at Seneca Creek Park from 6-6:45am.

Refunds and Bib Exchanges: We understand things can happen that prevent us from running goal races but in a low-key race like ours it’s just not practical to process refunds or do bib exchanges. If you decide to withdraw from the race please email the race director and your entry fee will be donated to the Maryland State Park system for continuing improvements to our trail system. 

Race switches:  Runners will choose their race distance when they register but should anyone want to switch to the longer distance, as long as they reach the decision point by 2:30pm (it will be clearly marked and attended), they will be allowed to do this. For those registered for the 50k but not able to do it that day, they will also be able to switch to the marathon distance. RUNNERS MUST INFORM the check point volunteers of their switch in order to be timed correctly.

Weather: Weather around the DC region in early March is unpredictable. We have had warm, snow-free years and years (like 2015) where we’ve gotten 1-2’ of snow the day before. Historically there’s been light layer of snow at the start and temps that stay below 50 degrees through the day. Please check the forecast before you come so you are well prepared.

Safety: Remember when approaching road crossings, CARS are the ones that have the right-of-way! All runners are expected to stop at road crossings. Volunteers will be there to help direct you across roads but will not stop cars.

Timing: We will use chip timing. The chips will be taped to the back of your bib when you get it. You will need to remove the chip and fasten it to the laces of one of your shoes with the cable ties we include in each runner bag in order to be timed. Make sure these are secure…..we have had runners lose their chips en route in years past!

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.

Because we want to make sure everyone is accounted for, it’s is important that you let someone know you can’t continue AND drop your chip with an aid station volunteer. We don’t want to be scouring the woods for someone who made their own way home and didn’t let anyone know

Drop Bags: We will allow 1 bag drop if anyone needs a change of shoes or particular foods/drink. You can put your items in a white kitchen trash bag, put your name on it with a magic marker (easily read makes for easily retrieved) and we will take it to the Rt 28 aid station. This is our largest aid station and also will allow bags to be available 2 times during the race. All such bags will be in a clearly visible drop area. You will be responsible to find your own bag….and remember the bag drop is At YOUR OWN RISK.

Water bottles: Every runner is expected to carry their own water bottle (and personal choice of drink powder). We will enforce our rule of NO water bottle—NO racing! Aid Stations will have water and Gatorade probably every five to seven miles and will only fill water bottles you bring.

Other Details:

Picnic: We will provide a nice finish line meal for all runners and spectators. However, it’s always tastier when we have some homemade goodies…..so please consider bringing a dish to share. There will be many hungry runners to feed! Please no open alcohol as it is against park policy.

Carpooling: The race will start and finish in the park and we do have limited car space. If you are local, please consider carpooling.