Race Information

Stone Mill 50 will be held on Saturday, Nov 11 2017 at 6am.

2016 Results

Stone Mill has been selected as the RRCA REGIONAL Championship in 2016!

2016 Course: The WSSC work plan near the trail is now definite and we can finalize the 2015 course. It will be mostly the same as in 2014 with a couple of minor changes. See the Course on Strava.

Removed from last year:the initial out and back to Brink Road. 2.8 miles

Don’t worry,the total distance is still 50 miles (and a little more)

2015 Results:https://www.mcrrc.org/race-results/2015/11/stone-mill-50-mile-3/

To Volunteer Click Here

The Stone Mill 50 Mile is a 50 mile trail run 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.

Host Hotel:

The Comfort Inn Shady Grove in Gaithersburg will again be the host hotel with a discounted nightly rate of $99. Call the hotel to make a reservation and ask for the Stone Mill rate.

16216 Frederick Rd.,Gaithersburg,MD,20877


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 11,2017. 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.

Packet Pickup
Friday 11/10 at the host hotel,4:30-7PM.

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 5AM).

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 &Daryl and your entry fee will be donated to the State and County parks instead of buying more stuff for the aid stations.

Pacers: 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.