O Gauge Track

Shop O Gauge track for sale for new layouts, railroad expansions, restorations, and replacement projects. Trainz regularly offers new, used, pre-owned, vintage, discontinued, and hard-to-find O Gauge track, including individual pieces, switches, turnouts, and larger track lots.

Lionel O Gauge Track

Restoring an older layout? Browse O Prewar Track or O Postwar Track.

Other O Gauge Track Systems

For trolley and street-running layouts, browse O Track Road Systems & Streets.

If you're expanding an existing railroad, matching the track system already in use is usually the easiest option. Connections, roadbed, rail profile, curve geometry, switch dimensions, and appearance can vary between systems.

For a new layout, consider the space available, the equipment you plan to run, and whether the railroad will be temporary or permanent. Roadbed-style systems are convenient for repeated setup, while scale-inspired and traditional track systems offer different appearance and operating options.

O Gauge layouts can range from a simple loop to permanent railroads with multiple mainlines, yards, stations, industries, sidings, and operating accessories.

As the railroad grows, additional curves, straight sections, switches, crossings, feeder tracks, and specialty pieces make it possible to add new routes and operating possibilities without replacing the entire system.

Used O Gauge track can be especially useful when expanding an established layout, matching an older system, or replacing discontinued pieces. Trainz regularly acquires individual track sections, switches, vintage track, and larger used track lots through model train collections and estates.

When buying pre-owned track, check rail condition, track pins or joiners, electrical connections, roadbed where applicable, and switch operation.

Older O Gauge railroads often need track that matches the original system. Browse O Prewar Track, O Postwar Track, and Lionel MPC Track when restoring or expanding a railroad from a particular era.

Larger locomotives and longer passenger or freight cars generally benefit from broader curves, while smaller traditional equipment may operate on tighter curves such as O27 or O36.

Check the minimum curve requirement for your equipment before planning or expanding a layout, especially if you expect to add larger locomotives or longer rolling stock later.

Trainz purchases qualifying model train collections that may include O Gauge track, switches, locomotives, rolling stock, transformers, accessories, and other railroad equipment.

Collections can include individual track pieces, larger track lots, vintage tubular track, discontinued systems, switches, and other layout components. Visit Sell My Trains – How It Works to learn more.

What gauge is O Gauge track?

O Gauge track has rails spaced approximately 1.25 inches, or 31.75 mm, apart. Traditional O Gauge trains in the United States commonly use three-rail track.

Does Trainz sell used O Gauge track lots?

Yes. Inventory may include individual sections, switches, vintage pieces, discontinued systems, and larger used or pre-owned O Gauge track lots.

What is the difference between O Gauge and O27 track?

O27 tubular track has a lower rail profile and is traditionally associated with tighter curves than standard O tubular track. Equipment compatibility depends on the specific train and curve diameter.

Which O Gauge track system should I buy?

If you're expanding an existing layout, matching the system already in use is usually the simplest choice. For new layouts, consider appearance, space, curve requirements, and operating style.

Can different O Gauge track systems be connected?

Some can be joined using adapters or transition sections, but rail profile, roadbed, connections, and geometry may differ between systems.

What curve size should I use?

The best curve size depends on your equipment. Larger locomotives and longer cars generally benefit from broader curves.