The First Big Adventure. And it's scary

So the P&J has just left on his first big solo adventure- cycling from here (Bristol) to Colwyn Bay (North Wales coast). He has a hotel room booked in Shrewsbury for tonight and is carrying a rucksack that weighs a ton(full of food and water, so it will get lighter). He's had a big breakfast, and we will be following to Hereford later today in case he finds he's bitten off more than he can chew.
 He's aiming to cover 103miles today and similar tomorrow. We're the emergency crew this side of Shrewsbury, my brother will take over after Shrewsbury. I've put £60 on his phone, so there's no excuse not to keep in touch. I have explained to him that we will worry, so can he text us when he stops to tell us where he's got to, and particularly when he gets to Hereford. After Hereford, he's got forty-odd miles to do to get to Shrewsbury and his bed for the night. I think if he gets to Shrewsbury, he'll finish the journey, and we'll see him again Thursday night.
So we're trying not to think of what might go wrong and hoping he'll make it to the end. He's been planning this journey for a long time and he'll be greatly disappointed if he doesn't. He's thinking about cycling back, so we might have it all to do again, next week!

UPDATE-Unfortunately, he only got as far as just outside Hereford due to a problem with his back tyre. We tried to fix it outside Halfords in Hereford, but to no avail. We traipsed back home to see if we could sort it out and then drop him at the TravelLodge to resume his journey from Shrewsbury, but we can't fix it (the rim tape is basically rubbish and causing punctures). He's too cheesed off to decide whether he'll have another go, but he will be visiting the bike shop tomorrow to get some decent rim tape. I got some nice photos of Hereford, though (there's always an upside).

 He has learned from the episode and accepts he didn't prepare well enough, didn't start out early enough and he was carrying too much weight in his rucksack. What is probably most galling, though, is that mum and dad were right all along, but he didn't listen.