This thread inspired me to register and comment. Oilfieldtrash seems to be the only one here who actually knows what he's talking about (with Meghan coming in a very distant second), despite a number of others claiming to be cyclists themselves.
First, the premise of the thread itself is a little absurd:
MTB seems so much harder than road riding
Define "harder" so we know what we're actually comparing, because it sure ain't apples to apples. Road cycling demands consistently high output, whereas MTB'ing requires much more technical ability and the ability to live in an anaerobic zone in short frequent bursts. So what do we "care" about when we talk about difficulty?
From a pure cardiovascular fitness perspective, I would agree (which assumes that you're "training" for the duration of the road ride). Meghan's assertion that "you can hide being unfit on a road bike" is patently false if you're recording your ride data and sharing it publicly, or if you're riding with other "fit" cyclists. The same is true for MTB'ing.
If you're on Strava, RWGPS, or MMR (god forbid), you aren't hiding anywhere.
This is retarded. Of course a smooth surface is easier to ride on, but it's also much more consistent, meaning you can sustain your output. This provides a lot more opportunity to train if you choose to take advantage of it. There are no breaks other than the ones you elect to take for yourself.
You can't "go all out" on your typical singletrack trail for any meaningful period of time because natural obstacles and technical sections are going to slow you down, allowing your HR and muscles to recover. Two different animals.
Yes, there are climbs and such, but you'll find those on a road bike, too. The world isn't flat. My quads get a lot more work on my road bike than they do on my mountain bike, but then again I've planned a route that has 1500 feet of elevation gain over 25 miles. Ride that loop twice and tell me it's easy
There are singletracks out there with tons of elevation too, so I'm not saying it can't be done there, but I'm just dispelling this whole "the world is flat for roadies" nonsense.
This is retarded
and hilarious. Cyclists place themselves into categories A - D. They're not consistent from club to club or region to region, but generally speaking, 20mph would put you in the B category no matter who you're talking to, and in most cases the A category. 22+ would put you squarely in the A category anywhere.
Riding 20 - 25mph on flat road is not easy. Not over any meaningful distance. I would love to see your Strava or RWGPS profile so we can all verify your truly elite cycling performance. If 20 - 25mph is "easy", then we'll no doubt see numerous rides of yours where you're averaging 25mph over 20 to 30 miles (which is trivial mileage on a road bike).
Reality: If you could do this, you would be at or damn near the top of every segment leader board out there.
Anything over 18mph is pretty respectable and out of reach by anyone who isn't dedicated to cycling fitness. 18mph is still considered class A by many outfits, and is high-end class B anywhere.
That's because 15 - 20 miles is silly. To exaggerate a bit to prove a point, that's like saying I don't get tired when I run to the end of my driveway. Of course it's easy. The only place a 15 - 20 mile ride has in a cyclist's training regimen is for baselining and threshold training. If your cycling training revolves around such rides, you're doing very, very wrong.
Maintain even a class B pace for a century ride (the gold standard for testing your cycling fitness) and then tell us how easy road cycling is. Seriously. Let's toss out this "25mph" bs. Just do 17mph. I'll give you half credit for 16mph.
The point is it's all relative. Apples and oranges. Roadies don't test themselves over puny 45 minute rides. That's the wrong job for the tool. Given a surface that's suitable for both, is it easier to ride x distance at y pace on a road bike? Of course it is. That's why roadies ride further and faster, because you need to in order to achieve a meaningful workout.
What's nice about a road bike is that you can train aerobically with much more consistency. That's why so many MTB'ers spend so much more time on their Roubaix than their Stumpjumper.
At the end of the day, it's all about pushing yourself to whatever your limit is. When you hop on a road bike to train, your number one goal is to get your HR to a given zone (depending on your goals) and keep it there. Under this premise, a road bike will kick your ass a lot harder than a mountain bike will over a given period of time (out of the norm singletrack courses aside), because you simply can't maintain your HR in
any zone when the terrain and obstacles are constantly forcing you to slow down, change direction, whatever.
I love my mountain bike, I love my road bike, and I love my jogging shoes, but they all serve different purposes. If I'm setting out to burn calories or improve my VO2 max, the last thing I'm picking up is my Rockhopper. If I want a mental challenge and an adrenaline rush, I head for the trails.