Start with a low km ride 30-40. Build to a 60km ride that you are familiar with, mixed terrain. (familiarity let’s you focus on the ride). Do a few 80k rides when you feel fine afterward a 60k. Do a few 100 km rides, in between your 60k rides. Then step up to a 120k, then back to 80k for a few days.
See the pattern, up then back down, then up higher than ever before.

Don’t underestimate the mental training you are doing, and listen to your body. If it needs to stop, stop and wait 10 mins, you may be surprised by how it’s responding that day.

I find wearing wireless earbuds really help to enjoy the minutes/hours.

Plan your routes and your hydration stops, eat even though you don’t feel like it.

Plan a sit down break 1/2 way through, over 100k plan 2 sit down breaks (also relaxes those stiffing muscles)

Doing a 320km ride next summer. Will leave at 5am, ride to 8pm, and I can’t wait!

Hi Dorothee, Sweden to Glasgow sounds like fun!! For the Odyssey we recommend 2nd batteries and we can keep those on our suport vehicle. At our roadside lunch at the midway point of the day’s ride, you can swap the battery out and then recharge both in the evening in your hotel room. Read our full e-bike policy here https://tdaglobalcycling.com/2020/12/e-bike-policy/

I toured from Sweden (150 km SW of Stockholm) to Glasgow solo this year. I ride an e-bike. Unfortunately the battery is only good for 60 to 80 km by one charge. I did 98 and 92 kms, but I had to charge my battery in between, which is for almost 2 hours to get enough with energy for the extra kms. Cycling the alps, I think only 40 kms are possible. I had around 20 kg of stuff (panniers etc) on my bike. Though the Athens to Amsterdam tour for example will be a problem.