Train from Naples to Sion
🇮🇹 Naples → 🇨🇭 Sion
Straight-line Distance
817 km
NW (319.3°)
Rail Distance
~1,062 km
Estimated by rail
Travel Time
~3h 58m
High_Speed
CO2 Saved vs Flight
91.3%
189.4 kg less CO2
Environmental Comparison
Train
High_Speed
CO2 Emissions
18.1 kg
Flight
Economy class
CO2 Emissions
207.5 kg
Taking the train saves 189.4 kg CO2 (91.3% less emissions)
Route Information
Requires Transfer
Stations on This Route
Continue Your Journey
Frequently Asked Questions
The estimated train journey from Naples to Sion takes approximately 3h 58m. This estimate is based on a rail distance of ~1062 km using a high_speed service.
The estimated rail distance from Naples to Sion is approximately 1062 km (817 km straight-line). Rail routes are longer than straight-line distances because tracks follow terrain and connect intermediate cities.
Travelling by train from Naples to Sion emits approximately 18.1 kg of CO2, compared to 207.5 kg by flight. Taking the train saves 189.4 kg of CO2 — a 91.3% reduction in emissions.
The route from Naples to Sion typically requires at least one transfer. Check operator timetables for the most direct connection available.
Check regional and national rail operator websites for services between Naples and Sion.
Train vs Flight comparison
Compare door-to-door time, CO2 and cost for Naples to Sion
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Data last updated: 2026-02-27