09:18
@Michael is it narrow enough to fit between your bars? You might get it into a handlebar bag, or have a bag tailored for your computer and bike.
@Michael you have to put backpacks super low, otherwise the helmet always binds.
@Michael I have a nice front rack on my single speed. I am a bit afraid, however, the rough ride on it will damage the notebook.
@Michael go to a reliable hotel the first night in Siena and send your notebook by courier. DHL and UPS have services that are compliant with banks sending notebooks as long as disks are encrypted.