
From the Organizer
ARE YOU READY TO RUMBLE?
Welcome to the registration page for the MCRRC Riley’s Rumble Half Marathon!
This page may also be used to sign up to volunteer - please see the "volunteer" tab to the left.
This race is part of our free, low-key race series for members. Please refer to the "Low-Key Race Entry Procedure" on our website for more information.
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
84°
Typical Low
66°
Chance of Rain
32%
Based on US Climate Normals data from Damascus 3 Ssw, 6 mi from the venue.
Host City
Elevation
492 ft
Nearest Airport
IAD
Washington Dulles International Airport · 20 mi
Time Zone
Eastern Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at MCRRC Riley's Rumble Half Marathon, put it on the calendar, and turn “someday” into a start date.
48
Days to train
Coming Up
Blue Crab Bolt Trail Run - Schaeffer Farms
5 miles away
Blue Crab Bolt Trail Run - Little Bennett
3 miles away
MCRRC Groovin' Woodstock Trail 7K
6 miles away
Montgomery County Interfaith 5K
Less than a mile away
From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
MCRRC Riley's Rumble Half Marathon
Jul 26, 2026