On3 Track System

Track designed specifically for the detail-focused On3 modeler.

✔ Purpose-built sectional track for realistic three-foot narrow gauge railroads
✔ Precision geometry for easy setup and reliable operation
✔ Ideal for both tabletop and permanent layouts

Curated bundles provide a powerful starting point for On3 layouts.

These hand-made Code 100 On3 sets make it easy to get your narrow gauge railroad running quickly. Start with a simple loop, then expand into more complex routing and operations as your layout grows.

👉 Begin with a complete loop set, then add straights, feeders, and specialty track to expand your railroad and introduce operational flexibility early.

Core components are the building blocks of your On3 layout.

With a variety of curves, straights, and feeder sections, you can design and expand a realistic On3 railroad with ease.

Each piece is hand-made Code 100 track with consistent geometry, making it simple to build your layout one section at a time and expand as your railroad grows.

👉 Combine different curve and straight sections to create flowing track plans, passing sidings, yards, and other operational possibilities.

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🚂 Looking for More On3?

Expand your On3 railroad with complementary products designed to work alongside Mainline Railworks Code 100 sectional track. From operating accessories and detail parts to specialty track and future switches, these products help transform a basic starting layout into a more complete and functional three-foot narrow gauge railroad.

👉 Browse additional On3 products to add realism, expand operations, and keep your railroad growing.

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