Top North American Class I Railroads
A Union Pacific–Norfolk Southern merger could create North America’s first true transcontinental railroad — here’s the full Class I ranking for 2026.
Good — strong data set, including a genuinely major story (the Union Pacific/Norfolk Southern merger). This is worth centering the article around.
Article 1: Top North American Class I Railroads
Title (56 chars): Top North American Class I Railroads Ranked 2026
Meta description (154 chars): A Union Pacific–Norfolk Southern merger could create North America’s first true transcontinental railroad — here’s the full Class I ranking for 2026.
Focus Keyword: top Class I railroads North America 2026
Categories: Rail, Market Reports
The seven Class I freight railroads generate more than $90 billion in combined annual operating revenue and move roughly 1.6 billion tonnes of freight across 140,000 route miles of US track each year — accounting for nearly 30% of domestic freight by ton-mile. But 2026 could reshape the entire industry structure: Union Pacific and Norfolk Southern filed a joint merger application that would create the first true transcontinental railroad in North American history. Here’s the full ranking.
1. Union Pacific
The largest publicly traded railway company in the world by market capitalization at roughly $158 billion, operating more than 32,000 route miles across 23 US states and reporting $24.3 billion in 2024 operating revenue, up 1% year-over-year.
2. BNSF Railway
The largest North American railroad by actual freight volume, spanning 28 states plus links into western Canada, and posting $23.35 billion in 2024 freight revenue with volume up 6.5% as intermodal growth offset a coal decline.
3. CSX Transportation
A major eastern US Class I railroad with substantial route mileage and freight revenue in the billions, forming a core part of the eastern rail network alongside Norfolk Southern.
4. Norfolk Southern
A major Class I freight railroad serving the eastern US, currently at the center of the pending merger application with Union Pacific — a revised application was resubmitted April 30, 2026 and remains under Surface Transportation Board completeness review.
5. Canadian National Railway (CN)
One of North America’s largest freight operators, running a nearly 20,000-mile network spanning three coasts — Pacific, Atlantic, and Gulf of Mexico — a reach no other North American railroad matches, supporting more than 25,000 US jobs.
6. CPKC (Canadian Pacific Kansas City)
Formed by the 2023 merger of Canadian Pacific and Kansas City Southern, CPKC generated $10.9 billion in combined 2025 revenue, giving North America its only rail network directly connecting Canada, the US, and Mexico.
7. Kansas City Southern (legacy, now part of CPKC)
Now fully integrated into CPKC, its historic US-Mexico rail corridor forms a core part of the combined network’s cross-border freight capability.
What This Means for Procurement Teams
The Union Pacific–Norfolk Southern merger is the single biggest story to track in North American rail. If approved, it would create the first transcontinental single-operator railroad in US history — shippers with lanes touching either network should model both approval and rejection scenarios into long-term rail contracts now.
Rail delivers meaningful cost savings for the right shipment profile. Rail freight reduces shipping costs by 20-30% compared to trucking for bulk inventory shipments over 500 miles — but only makes sense when transit time flexibility (7-10 days coast-to-coast vs. 3-5 days for truckload) fits your supply chain.
Drayage planning is not optional. Since Class I railroads move freight terminal-to-terminal only, destination proximity to a rail terminal (within 50-100 miles) is essential — factor drayage arrangements and costs into any rail vs. truck comparison from the start.
FAQ
What is a Class I railroad?
A Class I railroad is the largest tier of freight railroad in the US, defined by the Surface Transportation Board as having annual operating revenues of at least $447.7 million — there are currently seven Class I railroads in North America.
Would the Union Pacific–Norfolk Southern merger actually happen?
It remains under Surface Transportation Board review as of mid-2026, following a revised joint application resubmitted in April — approval is not guaranteed and the review process for a merger of this scale typically takes considerable time.
When does rail freight make more sense than trucking?
Rail typically makes sense for bulk shipments over 500 miles where transit time flexibility (rail takes longer) is acceptable and the origin/destination are within reasonable drayage distance of rail terminals.
Sources
- Mirror Review, Top 10 Biggest Railway Companies in the World (2026 Ranking)
- BlackRidge Research, Top Railway Companies in the USA: Largest Freight Rail Operators (2026)
- GetTransport, Largest Rail Freight Operators in the World 2026 (Ranked)
- AMZ Prep, Top 12 Rail Freight Companies in the USA, UK, and Australia (2026)