How fast can I race 400km through 3 countries?

Istraland is a multi-surface bikepacking event from the organisers of Trans Balkan Bike Race. I decided to see if I could ride the whole thing in one go with minimal stopping.
My SPONSORS:
www.marinbikes...
www.smithoptic...
rouvy.com
wildernesstrai...
styrkr.com
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DISCOUNTS on my fave stuff:
25% off selected STYRKR products: bit.ly/3Ojg5R5
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30 days free on ROUVY - rouvy.com/juliet
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My COACH:
www.trainsharp...
My STRENGTH & CONDITIONING partner:
www.everathlet...
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If you're after my routes, they're always on Strava
/ strava
Stuff I use:
Dynaplug Tubeless Repair: amzn.to/3kf5vhv
Sealant: amzn.to/41bL6uk
Mini Powerbank: amzn.to/3IG45pB
Main Camera: amzn.to/3kfcF5m
Mic: amzn.to/3k82DmJ
Camera Strap: amzn.to/3YSJunJ
Action Cam: amzn.to/41dl0Hd