LEGO DUPLO Town Train Tunnel & Tracks Expansion Set 10425 – 10 Extra Tracks

Grow More Play with LEGO DUPLO Town Train Tunnel and Tracks Expansion Set

Designed for adventurous toddlers and their growing imaginations, this expansion adds a tunnel, extra track pieces, a funnel element, a 2-way point switch, and an action brick to the LEGO DUPLO Town universe. With compatibility to other DUPLO Town trains and sets, it invites spontaneous storytelling and longer build-and-run sessions. Kids can pair it with related sets like 10427 or 10428 to extend the journey, creating larger, interwoven routes that spark curiosity and collaboration during playtime.

The visual appeal is immediate: chunky bricks in bold, friendly colors invite little hands to explore. The tunnel framing creates a sense of progress as the train winds through, while the funnel adds an eye-catching height difference that encourages planning and sequencing. The 2-way switch offers a gentle introduction to cause-and-effect as children decide which direction the train should go next.

What’s included

• 10 track pieces to extend a route and unlock new possibilities
• a tunnel element that frames the journey and adds depth
• funnel element for varied skyline and play scenarios
• 2-way point switch to redirect the train’s direction
• an action brick that introduces interactive moments during build and run

Play ideas and compatibility

• Pair with LEGO DUPLO Town 10427 or 10428 for a bigger, interconnected world
• Extend existing tracks to create longer routes through the tunnel for multi-step journeys
• Use the switch to practice planning routes and predicting outcomes as the train travels

Learning through play

• Encourages imaginative storytelling and cooperative pretend-play with siblings or friends
• Supports patience and focus as children test different track layouts and observe results
• Introduces basic engineering ideas—direction changes and spatial planning—in a hands-on way

Dimensions: the tunnel stands over 7.5 in. high, 6.5 in. wide, and 6 in. deep, providing a sturdy stage for toddler adventures.

Age recommendation: 2 years and up. All pieces are designed for little hands, with safe, durable construction that withstands enthusiastic play and easy cleanup after the fun.