The 10th running of the Stone Mill 50 Mile is on November 9, 2019. The fifty mile trail run is on the Seneca Greenway and Muddy Branch trails in Montgomery County Md. The course traverses forested, rolling terrain. The course is primarily on single track dirt. There are small stream crossings. Most of the course drains well, but parts can be muddy in wet weather.
2019 Race Information
2019 Regional Championship Race
2020 National Championship Race
2019 Course Preview Training Runs (Dates to be determined)
To Volunteer Click Here
SpringHill Suites in Gaithersburg is the host hotel with a discounted nightly rate of $99. Call the hotel to make a reservation and ask for the Stone Mill rate or use the link below for the special rate.
Address: 9715 Washingtonian Blvd. Gaithersburg Maryland 20878 USA
Website: Book from the Room Block
Sleep Inn: $95 Queen bed or $103 for Double – ask for Stone Mill rate.
Address: 2 Research Court, Rockville, MD, 20850,
Parking near start/finish area
Parking at Stedwick ES is limited. There is street parking on Watkins Mill Rd, Apple Ridge Rd, and a few other lots. Please consider carpooling. There is a large park and ride at Exit 11 on I-270
When – 6AM Start
The Stone Mill 50 Mile run will start at 6:00 AM on Saturday November 9, 2019. The cut off time is officially 13 hours or 7:00 PM, and will be STRICTLY ENFORCED due to permit requirements and so we can let our amazing volunteers go home. Intermediate cutoffs are
5:10 to Riffeflord….. 8.4 miles to go
3:10 to Rt 28 ….16.4 miles to go
1:25 to Stone Mill…23 miles to go
12:30 to Pennyfield…..26 miles to go…
Where Start/Finish Stedwick Elementary School
The start/finish will again be at Stedwick Elementary School 10631 Stedwick Road, Montgomery Village, MD 20886
The course will follow Watkins Mill Road for 1/2 mile to and from the trailhead.
Friday, November 8th at the host hotel, 4:30-7:00 PM & Saturday at Stedwick from 5:00-5:50 AM.
You can still pickup your packet on race day at the starting area if you can’t make it on Friday, but get there as early as possible (by 5 AM).
Stone mill will have 2 drop bag locations on race day. The bags will be collected race morning outside the school/start. There will be 2 separate piles:
- Mile 24-Pennyfield lock
- Mile 40-Riffleford road
Please clearly write your last name and bib number on your bag. Our volunteers will attempt to sort them by alphabet. Also please not too large/heavy. Our volunteers are probably not as strong as you are!!
They will be brought back to the school finish ….we will have a riffleford to finish shuttle approximately every 2 hours through the afternoon.
Refunds and Bib Exchanges
It’s just not practical to process refunds or bib exchanges. If you decide to withdraw from the race please email Barry and your entry fee will be donated to the State and County parks instead of buying more stuff for the aid stations.
Sorry, no pacers. Our permits with the various park services have a strict limit on the number of runners so we can’t allow pacers.