Washington DC to Pittsburgh by Bike Trail

Here is the math that makes Frostburg the westbound rider's best friend. Cumberland to Frostburg is 15.9 trail miles, all uphill — a solid but finishable afternoon even after days on the towpath. Sleep in Frostburg, and only 7.6 miles of climbing remain to the Divide. You knock those out on fresh legs before your coffee has worn off.

The morning stretch is also the scenic payoff of the whole climb. About five trail miles west of town you cross the Mason-Dixon Line at milepost 20.5, passing from Maryland into Pennsylvania. Shortly after, at roughly milepost 22, you pedal through Big Savage Tunnel — around 3,300 feet of lighted bore through the mountain (closed in winter, roughly late November to early April; confirm seasonal dates). Then the Divide itself at milepost 23.5, and from there the GAP trends downhill toward Pittsburgh.

Try to ride Cumberland-to-Divide in a single push at the end of a towpath day and you will understand why so many trip reports call it the wall. Split it, and it becomes two pleasant rides with a mountain-town evening in between.

Cumberland is the hinge of the whole route: C&O milepost 184.5 meets GAP milepost 0 in the middle of town. The surface changes too — from the towpath's rougher canal-bank dirt to the GAP's smoother crushed-limestone rail-trail. Many riders find they move faster on the GAP even while climbing.

Mentally, this is where the trip's character shifts. The towpath is history-dense and flat; the GAP is mountain railroading — cuts, fills, tunnels, and long sightlines engineered for steam locomotives. The Tunnel Hotel sits literally on that heritage: the building went up in 1888 beside the grade, and pedal-powered railbikes still run the old rails next door.

Nobody climbing out of Cumberland arrives on a schedule. That is why check-in at The Tunnel Hotel is contactless around the clock — an SMS delivers your door code, and whether you crest Depot Street at 6 PM or well past midnight, you let yourself in. Checkout at 11:00 AM gives you an unhurried start on the 7.6 miles to the top.

Fuel matters more on this leg than anywhere else on the route. The on-site Trail Inn Cafe handles it: hot breakfast before the final climb, coffee, trail sandwiches to pack out, local beer for the evening you earned — everything charged straight to your room. Solo riders and couples fit the Queen City Sleeper or Little Savage Sleeper from $69.99; the Railrider Retreat Suite sleeps four from $109.99; and the Big Savage Bunk Room takes a six-person crew at $149.

Direct booking at /book carries no online fees and runs through Stripe. Weather-flexible policies fit a westbound schedule: 72-plus hours out gets a full refund, 48-plus hours lets you reschedule, and operator weather cancellations convert to refund or credit.

You will have daylight to spend, and Frostburg rewards it. The Frostburg Depot and its working turntable are adjacent to the hotel, and the Thrasher Carriage Museum is next door. If your timing lines up mid-day, steam locomotive 1309 pulls the Western Maryland Scenic Railroad's Frostburg Flyer into the depot at 12:45 PM and steams back out at 2:15 PM — worth lingering for.

Walk up the hill and downtown Frostburg opens up with shops, restaurants, and breweries, energized by Frostburg State University. Riders adding a rest day before the Divide can trade the bicycle for a railbike with Tracks & Yaks (19 Depot St, 301-349-3699) — the 2-hour Helmstetter Hotshot runs $99 per bike, and the 5-hour Track and Yak pairs railbiking with kayaking for $169.