Long Distance Randonneuring
I think you can do it, your probably fitter than you think or you will get in shape quicker than someone who never road. I agree about ramping up the mileage week by week and taking a refresher week off every month and start another building block month. FWIW racing in the 70s at 360 miles a week I got tendinitis with toe clips and straps, switched to speedplays when they came out and never hurt again. Make sure your bike fits, fits, fits. I'm 60y/o and i think you can do it. Its gonna hurt but so what. Lifes too short and if you fail you fail, not the end of the world but you ought to at least try. I wish I could afford to go to the ends of the earth for an epic ride like that. Post Pictures!!! My goal in October is a Century on a Fixed Gear. Pales in comparison to what ur doing but at least its my 83' De Rosa lol.