Train from Welwyn Garden City to Sion
🇬🇧 Welwyn Garden City → 🇨🇭 Sion
Straight-line Distance
829 km
SE (135.4°)
Rail Distance
~1,078 km
Estimated by rail
Travel Time
~4h 1m
High_Speed
CO2 Saved vs Flight
91.3%
192.3 kg less CO2
Environmental Comparison
Train
High_Speed
CO2 Emissions
18.3 kg
Flight
Economy class
CO2 Emissions
210.6 kg
Taking the train saves 192.3 kg CO2 (91.3% less emissions)
Route Information
Requires Transfer
Time zone difference: 1.0 hour(s)
Stations on This Route
Continue Your Journey
Continue from Sion
Also from Welwyn Garden City
Frequently Asked Questions
The estimated train journey from Welwyn Garden City to Sion takes approximately 4h 1m. This estimate is based on a rail distance of ~1078 km using a high_speed service.
The estimated rail distance from Welwyn Garden City to Sion is approximately 1078 km (829 km straight-line). Rail routes are longer than straight-line distances because tracks follow terrain and connect intermediate cities.
Travelling by train from Welwyn Garden City to Sion emits approximately 18.3 kg of CO2, compared to 210.6 kg by flight. Taking the train saves 192.3 kg of CO2 — a 91.3% reduction in emissions.
The route from Welwyn Garden City 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 Welwyn Garden City and Sion.
Train vs Flight comparison
Compare door-to-door time, CO2 and cost for Welwyn Garden City to Sion
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Data last updated: 2026-02-27