I've searched here and elsewhere on the web and haven't found much in the way of training plans for long term tours. I plan on riding for about three months From St. Petersburg to Berlin south to Greece and then from Rome to Lisbon. I'll mix in some train shuttles so that I can cover the whole distance in the time that I have, but I would like to ride 40-60 miles per riding day spending 5-6 days on the bike per week. I'm in fairly good riding shape now, as I get in one or two 1.5-3 hour road or mtb rides per week mixed in with 2-3 other days of shorter rides or runs. I could start tomorrow and be ok, but I'd like to take advantage of the 2-3 months I have before I start to get in the best starting shape I can, while also being fresh and rested. I've trained for mtb racing before, but not the kind of long distance, day-to-day endurance I'd like to have for this adventure. On my previous longest tour of a week with no pre-training, my butt, hands and back were all in fairly rough shape by the end, averaging 50 miles/day, and my legs weren't too fresh either. I'd like to at least minimize this, and give me the option of going longer and faster as well.
I'd really appreciate it if anyone knows of any good web resource out there with training plans, or any personal suggestions. Thanks so much!