From Mark Beaumont’s blog:
“Today (Tue 21st) was a frustrating day on the bike. I woke to find a puncture and then punctured again within ten miles. That means three punctures in as many days! Two of these punctures have been the at the valve and not a normal hole, so there is no way to fix them. I normally carry two spare inner tubes plus patches, however now have no spares if I puncture again! From this morning it is 300km to the next bike shop. My only option is the pedal on… carefully!”
I will be taking two spare inner tubes. I haven’t repaired an inner tube in 25 years!