Train from Portsmouth Harbour to Romont
🇬🇧 Portsmouth Harbour → 🇨🇭 Romont
Straight-line Distance
744 km
SE (124.7°)
Rail Distance
~967 km
Estimated by rail
Travel Time
~3h 37m
High_Speed
CO2 Saved vs Flight
91.3%
172.5 kg less CO2
Environmental Comparison
Train
High_Speed
CO2 Emissions
16.4 kg
Flight
Economy class
CO2 Emissions
188.9 kg
Taking the train saves 172.5 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 Romont
Also from Portsmouth Harbour
Frequently Asked Questions
The estimated train journey from Portsmouth Harbour to Romont takes approximately 3h 37m. This estimate is based on a rail distance of ~967 km using a high_speed service.
The estimated rail distance from Portsmouth Harbour to Romont is approximately 967 km (744 km straight-line). Rail routes are longer than straight-line distances because tracks follow terrain and connect intermediate cities.
Travelling by train from Portsmouth Harbour to Romont emits approximately 16.4 kg of CO2, compared to 188.9 kg by flight. Taking the train saves 172.5 kg of CO2 — a 91.3% reduction in emissions.
The route from Portsmouth Harbour to Romont 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 Portsmouth Harbour and Romont.
Train vs Flight comparison
Compare door-to-door time, CO2 and cost for Portsmouth Harbour to Romont
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Data last updated: 2026-02-27