Types of Bikes: What Each One Is For and Which to Choose

The right type of bike depends on where you’ll ride: a road bike if it’s almost all pavement, gravel if you mix pavement and dirt roads, mountain for trails, city, hybrid or touring for getting around and traveling, folding if you combine riding with a train or bus, and electric if you want to go farther or arrive without breaking a sweat. Below is the side-by-side comparison and, at the end, four questions to help you decide.

Quick comparison

Weights are approximate: they come from manufacturer spec sheets in size M (for road and electric bikes, it’s the range most models in one catalog fall into; for the rest, it’s one entry-level model). We don’t list prices by type because they vary too much with brand, material, groupset and model year.

Mountain bike tires are sized in inches: 2.4 in is about 61 mm.

Road and gravel bikes

A road bike is built to go fast on pavement. It has drop handlebars (with two hand positions, up top and in the drops), a stretched-out position and narrow tires: the most common today run 28 to 32 mm. Most midrange road bikes weigh 15 to 20 lb (7 to 9 kg).

• Endurance: taller at the front and more comfortable on long rides.
• Race: lower and longer, and lighter.
• Aero: shaped tubes to cut through the wind, built for speed on flat ground.

A gravel bike looks like a road bike but with fat tires (40-50 mm), more stable geometry and lower gearing for climbing on dirt. An entry-level aluminum gravel bike weighs about 25 lb (11.3 kg) and comes with 45 mm tires and room in the frame for 54 mm. You can leave home on pavement and end up on a forest road without switching bikes.

Which one? We compare them with numbers in gravel vs road bike: at the same wattage, the gravel bike is a bit slower on pavement, but much less than you’d think.

Mountain bikes: hardtail or full suspension

A mountain bike (MTB) has flat handlebars, 29 in or 27.5 in knobby tires and powerful disc brakes. What defines it most is the suspension:

• Hardtail: a suspension fork up front only. It’s lighter, cheaper and needs little maintenance. An entry-level aluminum hardtail with 120 mm of front travel and 2.25 in tires weighs about 28 lb (12.8 kg).
• Full suspension: a rear shock as well. It grips better and tires you less on rough ground, at the cost of more weight, money and maintenance. An aluminum trail bike with 150 mm up front, about 140 mm in the rear and 2.4 in tires weighs about 35 lb (16 kg).

Within mountain biking there are three families based on suspension travel (how many millimeters it compresses):

• XC (cross-country): short travel and a light bike, for climbing fast and racing marathons. Many are hardtails.
• Trail: the middle ground, for pedaling up and riding down singletrack with confidence. It’s the most versatile.
• Enduro: long travel, built to descend fast on very technical terrain. It climbs, but slowly.

City, hybrid and touring bikes

A city bike (or comfort bike) puts comfort and everyday use first: upright position, fenders, lights and, often, an internal-gear hub that needs almost no maintenance and lets you shift while stopped at a light. A city bike with an 8-speed Shimano Nexus internal hub weighs about 35 lb (15.9 kg) and runs 47 mm tires.

A hybrid or touring (trekking) bike is the traveling cousin: a sturdy rear rack for panniers, more gears for climbing loaded, wide tires with some tread and, sometimes, a suspension fork. It works for commuting during the week and a multi-day tour on vacation; how to load it and plan the stages is in bike touring with panniers.

If you’re weighing bike versus car for your commute, the bike vs car savings calculator shows how much you’d save per year.

Folding, electric and kids’ bikes

A folding bike collapses into a small space and fits in a car trunk, under a desk or on a commuter train. It has small wheels, 16 in (Brompton-style) or 20 in, which make it nimble but less stable and comfortable over potholes. It makes sense if you combine biking with public transit or have no room to store a bike.

An e-bike isn’t a separate type but a motorized version of almost all of the above: city, hybrid, mountain (e-MTB), gravel and even road. It weighs much more, 46 to 62 lb (21 to 28 kg) for most models, and costs more.

To choose a motor and battery, read how to choose an electric bike and mid-drive vs hub motor, and work out how many miles you’d get with the e-bike range calculator. E-bikes that assist up to 28 mph (Class 3) have extra rules in many states: see our bike laws section.

For kids’ bikes, what changes with age is the wheel size, from 12 in (also used on balance bikes) for ages 2 to 4 up to 24 in for ages 8 to 12. Buying one “to grow into” usually backfires: a bike that’s too big is harder to handle and scary. You’ll find sizes by age in kids’ bike sizes.

How to choose in four questions

1. Where will you ride 80% of the time? Buy for that, not for the dream ride you do once a year.
2. How hard do you want to work? If hills, distance or arriving sweaty hold you back, look at the electric version of the type that fits you.
3. Where will you store it and how will you move it? A walk-up apartment or a train commute call for a light or folding bike.
4. How much can you spend, including gear? Save money for a helmet, lights, a lock and, if you’ll do long rides, padded shorts and pedals.

With your answer, find your size in the bike size calculator or the bike size chart by height and read how to find your bike size: a good bike in the wrong size is worse than a simple one in the right size.

Common mistakes

• Buying for the dream ride instead of the real one. A long-travel enduro bike for dirt roads is heavier, pricier and slower than you need.
• Looking only at weight. On flat ground, 2 lb (1 kg) extra barely shows; position and tires affect speed far more.
• Compromising on size. Taking whatever size is on sale, or the one on a used bike bargain, costs you in comfort and injuries.
• Forgetting maintenance. Suspension, hydraulic brakes and e-bike motors need service that costs money too.
• Buying an e-bike without checking where you’ll charge it. If you can’t bring it inside, make sure the battery comes off.

Still undecided? Answer the seven questions in the which bike should I buy quiz and we’ll tell you which type, size and budget fit you.

Updated October 19, 2026 ·Report an error on this page