I recently completed a 14 day trip by train from the UK to China which included a trip on the Trans-Siberian Railway. The journey was 7,650 miles in total which is about the same as traveling across America east to west 3 times ! I created a web log that then turned into a website that includes a summary of the trip plus photos, maps and advice for others wishing to do a similar trip, at http://www.trans-siberian-railway.co.uk