Greenwich Park: This is fun. Total party atmosphere. Everyone’s smiling.

Cutty Sark: Not bad at all. Love the cheers. Spotted a celeb, too.

Rotherhithe: Dunno, that might be a blister forming on my left foot.

Tower Bridge: More blisters. Wanna cry.

Isle of Dogs: Wish I hadn’t told people I’m doing it. Wanna drop out.

Poplar: Twenty miles? Feet feel like I’ve run fifty. Knees hurt.

Embankment: The Eye. Big Ben! Have never been so glad to see Big Ben. Might cry.

The Mall: Not so much jogging, but limping across the finishing line. But I did it! Big smile.