Australia and New Zealand are set to expand their rail networks in 2026 with major projects across Melbourne, Sydney, Auckland, and Christchurch. Key developments include Melbourne’s Metro Tunnel launching full services, Sydney Metro Southwest Line expansion, Auckland’s City Rail Link completion, and new long-distance routes in New Zealand. The upgrades aim to improve urban mobility, reduce congestion, and provide travellers with faster, more efficient, and sustainable rail travel options across major cities.