Italian trains have a reputation for being late. The reputation is 30 years out of date. Trenitalia's Frecciarossa (high-speed) has a 90%+ punctuality rate — comparable to Germany's ICE and better than UK's Avanti. Rome→Milan: 2h55. Rome→Florence: 1h30. Rome→Naples: 1h10. Milan→Venice: 2h25. All at 300km/h. All with WiFi, power, bar car, and seats wider than any economy flight. And if you book 2-4 months ahead: €19. That's less than the taxi from Termini to your hotel. Bus alternative →
Trenitalia (state-owned, covers ALL of Italy). Frecciarossa/Frecciargento/Frecciabianca: high-speed, main routes, 4 classes (Standard, Premium, Business, Executive). Regionale/Regionale Veloce: local trains, cheap (€3-15), slower, no reservation required. Italo (private, NTV — since 2012). High-speed only (same routes as Freccia, different company). Often 10-20% cheaper than Trenitalia on identical routes. 4 classes: Smart, Comfort, Prima, Club Executive. Newer trains, slightly better seats, free streaming entertainment.
Which to choose? Compare both for every trip — Trainline shows both simultaneously. Sometimes Trenitalia is €5 cheaper. Sometimes Italo. The difference is marginal — both are excellent. Regionale trains (short trips, Lazio, Campania, local routes) are Trenitalia only.
Trenitalia "Super Economy" and Italo "Low Cost" fares: €19-29 for routes that cost €50-70 at full price. How to get them: Book 60-120 days ahead (tickets release ~4 months before travel). Non-refundable, non-changeable. Available on trenitalia.com, italotreno.it, or Trainline (compares both). Best for: fixed travel dates. If your plans are flexible: buy "Economy" (changeable once, €29-39) or "Base" (fully flexible, €50-70).
Standard/Smart (€19-50): 2+2 seating, comfortable, power at every seat, WiFi. Perfectly fine for 95% of trips. Premium/Comfort (€29-60): Same seats as Standard but with a welcome drink + snack. Worth €5-10 more? Honestly, not really. Business/Prima (€49-90): 2+1 seating (wider seats), included meal, lounge access at major stations. Worth it for 3h+ trips. Executive/Club (€100-180): Private salotto, champagne, concierge. Worth it for celebrations or expense accounts.
Validate Regionale tickets at the green/yellow machines on the platform BEFORE boarding. Failure to validate = €50 fine. High-speed trains don't need validation (seat assigned, ticket digital). Luggage: No weight limit, no bag limit. Store above seats or in luggage racks at car ends. Strikes (sciopero): Italian trains strike periodically (usually announced 2+ weeks ahead). During strikes: minimum guaranteed service runs (~30% of trains). Check trenitalia.com for strike schedules. Stations: Roma Termini, Milano Centrale, Firenze SMN, Napoli Centrale — all walkable to city centers. WiFi: Free on Freccia/Italo. Unreliable on Regionale.