Locations of Aid Stations

Notes about the aid station locations:the GPS coordinates are close but not perfect. You’ll need to look for the trail crossing. This is especially true on 118 Germantown Road.

Start/Finish Watkins Mill HS  39.183504,-77.215691

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355 AS –Mile 8 and 48  39.167285,-77.229338

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Riffle Ford AS –Mile 12.8 and 42.8  39.133356,-77.268047

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Rte 28 East (Tunnel) FULL AS –Mile 16  39.106703,-77.234488

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Quince Orchard on Muddy Branch AS
(NO CARS!) –Mile 18.2  39.091966,-77.247448


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Pennyfield Lock FULL AS –Mile 25.1  39.056617,-77.293217

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Stone Mill FULL AS –Mile 28.6  39.069163,-77.343342

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Rte 28 West FULL AS –Mile 35  39.128196,-77.333166

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118 Germantown Rd (Water Only) –
Mile 38  39.128396,-77.296972


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Watkins Mill Rd AS
(near start/finish) –Mile 5.3  39.186988,-77.21465


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Brink/Wightman AS –
Mile 2.4  39.201531,-77.20391


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