bikebreak

not the steepest, just the longest

Papa Tom

Goooood Heavens! Why**********?

kaos joe

The Great Allegheny Passage from Cumberland to the eastern continental divide is uphill for about 20 miles IIRC. But it isn't paved and I think some of it near the top is over the PA line.

____

Just down the road from Cumberland, the climb up 135 from Bloomington MD ascends over 1700 feet in 5+ miles (about a 5% grade).

FBinNY 

Eastern Maryland is relatively flat. As noted above the long and high climbs will be out west in the Allegheny mtn ridge near the West Virginia border. As to longest grade, it depends on whether you allow short descents along the way. If so, I expect the climbs near Backbone Mtn will make the short list.

springs

Maybe this ride will interest you.

Garrett County Gran Fondo

bikebreak

Thanks, I'm helping with a charity event themed on climbing Mt. Everest, which is 29029 feet high. But we are going to do it in teams of 3, so making a route with 9677 feet of climbing. Yes, crazy!
I'm mainly looking around the Frederick to Hagerstown area as we live near Baltimore.

____

Strava shows about a half-dozen nice-sized climbs between Frederick and Waynesboro PA. Hagerstown not so much. You could probably cobble those together into your third of Mount Everest.

StanSeven

You'll probably have to go west of Hagerstown to find that kind of climb. I know when you get past Hancock, route 40 has some really long stretches. If you can ride on 48, there's almost a ten mile climb going through the cut in the mountsin.

balto charlie

Here is the Gran Fondo in Frederick. Not certain it is what you seek but has almost 10K climbing in 100 miles.
GFNC Frederick 100 mile 2015 - A bike ride in Frederick, MD

greaterbrown

I was just reading about this crazy stuff: "Everesting"
Maybe... in another life.

I lead a winter hill climb ride in Baltimore called the 5 Summits.
The middle 3 of the summits can be ridden without stopping.
https://ridewithgps.com/routes/12085595

You'd need to do a little over 50 reps of this to Everest, about 250 miles.
In 24 hrs? Whoa.

greaterbrown

Ahh... I just re-read your requirements: you are only personally responsible for a third of the climbing.
That would mean you need 20 reps of my 3 summits, which is less than a century.
Cool.

BTW: def. contact me if you do this. I might even ride a few with you.

Trakhak

For climbing training, heading north from Baltimore and Towson, I ride York Road starting at Shawan Road. Nice wide shoulders, grades of 5% and up coming and going. Not continuous climbing, but you spend much more time on the uphills than the downhills. In any event, intervals make for more-effective training.

GlitterBiker

Can it be off-road? I remember years ago, mountain biking at Green Ridge State Forest. There's one trail that seems to go uphill forever (or maybe it's just my memory.) Green Ridge is a do-able day trip from Baltimore.