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Riley’s Rumble Half Marathon & 8K 2020 – CANCELLED

July 26, 2020 @ 7:00 am - 10:00 am


Due to concerns regarding COVID-19, the 2020 Riley’s Rumble HAS BEEN CANCELLED.

While we were hopeful that we would be able to run the 2020 Riley’s Rumble, it is simply no longer a possibility. Permits are currently not being issued and there remain no clear guidelines to guarantee a safe environment for all runners and volunteers during this pandemic, leaving us with no other responsible option but to cancel this year’s event. We appreciate your support of Riley’s and hope to see you next year!


Come run the infamous Riley’s Rumble Half Marathon or 8k for a challenging and rewarding race experience.

Is Riley’s Rumble a race for you? Let’s find out.

Do you love running hills? Do you love running in summer heat? Does the DC area humidity inspire you to get out and sweat it out?

If you said yes to any of these questions, or even if you didn’t, come out & join us — you won’t regret it!

So which Rumble is the right distance for you?

If you are preparing for a fall marathon or are an experienced Half Marathoner– Get that 13.1.

If you are preparing for your first half marathon (perhaps the Parks Half Marathon in September) or if you want a little challenge but want to walk the next day: the Rumble 8k will help you hit those goals.

Please note, Riley’s Rumble is not a good idea for your first half marathon. However, if you choose not to run either race, please consider Volunteering. It will be a great time (guaranteed)!

Minimum Pace

Half Marathon – Course and equipment logistics require that runners not exceed 15 minutes per mile. Do not attempt Riley’s Rumble if you are not confident of completing the course at that pace. There is no minimum pace for the 8K, but the course will close at the conclusion of the half marathon.


Watermelon, bananas, and other refreshments will be available at the finish. There are no awards, t-shirts, or finisher medals. You won’t need a finisher medal to remember you have done Riley’s.

On-Course Support

Half Marathon – Water, Gatorade, and ice will be provided every two to three miles along the course and at the start/finish. Gels will be available at water stop #3 (mile 6 at the Taylor School). Popsicles will be provided just after the turnaround between mile 8 and 9. (Popsicle Protocol: Just before the turnaround, yell out your flavor preference and after the turnaround, the volunteers will have it ready for you!)

8K – Water will be available on the course.

There are port-o-potties at the start/finish, but not along the course. Beware of venturing off-road – poison ivy is rampant in the forest.


Typically, Riley’s Rumble weather is hot, humid, and sunny. Adjust your pace and expectations.

If it is raining, prepare to get wet. In the event of dangerous conditions (lightning, excessive heat, blizzard, etc.) the race may be delayed, canceled, or turned in to a fun run (i.e., times and places will not be recorded) at the discretion of the race directors. We will post updates on the Riley’s Rumble Facebook page.

Results, Photography, and Stories

Results and photography from the race will be available through the MCRRC Photo Site. This sometimes takes several days to resolve any issues, so be patient. Like the Riley’s Rumble Facebook page and share it with others. Stories and photos of this or previous year’s races are welcome.


There is plenty of free parking at the SoccerPlex. Nonetheless, we encourage carpooling to minimize parking hassles and to preserve our environment.


Headphones are not permitted in MCRRC races.



Course Descriptions

Half Marathon:
The USATF-certified road course for the half marathon (course map) starts as an out-and-back. If you miss the turnaround, you get to cool off in Little Seneca Lake. On the way back, there is a short out-and-back leg so you can burn off extra energy before the last 3 miles to the finish.
The USATF-certified road course for the 8K (course map) is an out-and-back course. If you miss the turnaround, you will get the joy of completing the half marathon.


Our events are staffed by the hard work of our volunteers.  Without them, our races wouldn’t be possible. Volunteers are needed for this event.  Click here to signup to volunteer! SSL credit is available for middle and high school students.


Members: This race is part of our low-key race series and is FREE for MCRRC Members.  Effective January 1, 2020, paper registration forms will no longer be accepted at the race site.  To signup for your free 2020 MCRRC member bib, please click here. *** If you already signed up for a personalized 2020 bib, you do NOT need to register online – your bib will be waiting for you at registration.

Non-members:  ONLINE REGISTRATION IS OPEN for non-members! The fee is $30.00 for the half-marathon and $15 for the 8K. NEW FOR 2020 ** Online registration will remain open until the start of the race. Late registrants may register online before leaving the house, from their smartphone, or at the race site using one of our registration kiosks!  BRING YOUR CREDIT CARD OR CASH with you to register online at the race site.  Online service fees will apply for credit card processing.

Registration and packet pickup open at 5:30am. Try to arrive no later than 6am to help us get everyone through registration and packet pickup.



July 26, 2020
7:00 am - 10:00 am
Event Categories:
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Ida Lina Diak


South Germantown Recreational Park – Maryland SoccerPlex
18031 Central Park Circle
Boyds, MD 20841 United States
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