According to a NPC inside the Cerulean City Pokémon Center in Gold and Silver or HeartGold and SoulSilver, the Magnet Train travels at 550 km/h : r/pokemon
Post-Game Related Things That Actually Are Iconic | ResetEra
How to get the Magnet Train Pass - Pokemon HeartGold & SoulSilver - YouTube
Pinkie plays Poirot with Pokémon: Theft on The Magnet Train Express – Pinkie's Paradise
MAGNET TRAIN TICKET - Pokémon Gold/Silver - YouTube
Pokemon Heart Gold Special Events 03:Magnet Train - YouTube
Pokémon Gold and Silver (Video Game) - TV Tropes
Pokemon Crystal Walkthrough Part 29 - Power Plant, Magnet Train, & Legendary Dogs - YouTube
Gold/Silver/Crystal Walkthrough - PokeDream
How to Get the Magnet Train Pass in Pokemon Crystal/Gold/Silver - YouTube
Magnet Train - Bulbapedia, the community-driven Pokémon encyclopedia
Review: Why You Should Play Pokemon Gold and Silver | The RPG Square
Magnet Train - Bulbapedia, the community-driven Pokémon encyclopedia