The original blog post with all the pretty pictures

EverySingleStreet Hamburg: collecting all streets in my city

How my run streak has been going

A tough ultra marathon I did: CCC on UTBM weekend in 2025

My EU Project: running all capital city marathon races of the then 28 European Union member countries

My journey to running all six World Marathon Majors

Finishing the Six-Star journey at Tokyo Marathon in 2026

My appearance at Runner’s World Podcast (German): check out the episode here

Hamburg Marathon official website

100 Marathon Club Germany official website

IRONMAN Hamburg official website

My experience at the first edition of IRONMAN Hamburg, 2017

My second time racing IRONMAN Hamburg on my 35th birthday in 2019

My blog post about Elbtunnel Marathon 2019

Sülldorfer Feldmark Marathon 2019

Billwerder Bucht Marathon 2019

The “Elbtunnel Marathon”

Berlin Marathon official website

Berliner Mauerweg Lauf race website

Flensburg Marathon race website

What it’s like to be a marathon pacemaker – at Flensburg Marathon

Lübeck Marathon

Challenge Roth official website

My experience at Challenge Roth long distance triathlon 2017

Munich Marathon race website

My experience at the massive Zugspitz Ultratrail

Nico and I running to all Munich Breweries during the pandemic

Munich Breweries Ultra with fifty people in 2025

munichbreweriesultra.beer – sign up for the notification service

Rennsteig Supermarathon

My blog post about Rennsteig 74k

Erfurt Marathon

My blog post about Erfurt Marathon

Baldeneysee Marathon race website

My blog post containing the experience I had at Baldeneysee Marathon

Steinhart 666 race website

Wesel Marathon race website

Köln Marathon race website

Röntgenlauf Remscheid race website

Trail Marathon Heidelberg

Freiburg Marathon race website

Frankfurt Marathon race website

Kassel Marathon race website

Dresden Marathon race website

Hannover Marathon race website

Bremen Marathon race website

BremenSanktPauli – 100 Miles in a Day

My report about BremenSanktPauli 2025 with close to 100 finishers

Bienwald Marathon race website

Schweriner Seentrail race website

Rostock Marathon race website

Hartfüssler Trail race website

Magdeburg Marathon race website

Spreewald Marathon race website

Düsseldorf Marathon race website

Rhein-Ruhr Marathon Duisburg race website

Kristallmarathon Merkers race website

Saarathon race website

Helgoland Marathon race website

Monschau Marathon race website

Münster Marathon race website

Harz-Gebirgslauf race website

3-Länder-Marathon race website

Running the World by Nick Butter (on my bookshelf)

Zur Bookshelf Seite

Kaufe das Buch hier

The bookshelf page

Buy the book here

Mike Monteiro’s website

His previous book “You’re My Favorite Client”

His previous book “Design Is a Job”

His previous book “Ruined By Design”

Mike Monteiro’s newsletter, the basis for the book

His design company, Mule Design

The blog post with all the pictures

My statement about the use of AI on this blog and podcast

My current time-based ambition at an endurance race

The Markdown format by John Gruber

My Tokyo Marathon race report blog post (and podcast episode)

Barcelona Marathon on Strava

My book review of Eliezer Yudkowsky’s “If Anyone Builds It, Everyone Dies”

The case for being friendly to your chatbot

Andy Masley’s research on the efficiency increase of ChatGPT queries

The bookshelf page

Buy the book here

The bookshelf page

Buy the book here

The bookshelf page

Bregman’s other book I’ve read, ‘Utopia for Realists’

Buy the book

Check out the School for Moral Ambition

The blog post with all the pictures and videos

My Marathon Majors journey overview

My Berlin Marathon 2013 report

My London Marathon 2015 report

How I accidentally qualified for Boston

My Boston Marathon 2023 report

My New York City Marathon 2023 report

My Chicago Marathon 2024 report

German blogger Patrick’s Tokyo Marathon 2025 report

The ONE TOKYO GLOBAL club

The cost of living comparison between Tokyo and Hamburg

How my running streak works

My Michelin-star enthusiast friend Dima’s Instagram

My runner friend Nicole’s Instagram

Dubai runner Sadique I met during the race

The parkrun movement

Four times Six Star finisher and deaf runner Tom

My inspirational running buddy Michael Mankus on Instagram

Our running race BremenSanktPauli 100 Miles

Rickey Gates’ project everysinglestreet.com

Rickey Gates’ sponsor Salomon made a video about it

The tool I use for tracking progress: CityStrides.com (referral link)

Patrick Jeschak, who sparked more interest in me to collect streets

The CityStrides rules explained

OpenStreetMaps, the crowd-created mapping project

mapbox, a supporting tool to show maps in websites

CityStrides’ premium offer

Chinese Postman Problem

Dijkstra’s algorithm

Euclidian shortest path calculation

“solipsia” demo of shortest path calculation

“clementh44” demo of shortest path calculation

“seen-one” demo of shortest path calculation

COROS PACE Pro, a sports watch with maps and navigation at a low price

My 55 kilometer street collecting spree in Schnelsen on Strava

My current status in Hamburg on CityStrides: Just under 40% of Hamburg’s total streets, 3,204 of 8,084

Current Hamburg leader Rundreas Palm’s impressive LifeMap

The bookshelf page

Buy the book here