Articles and guides
Decide which race, then get round it.
Entry routes, training blocks, kit and course intelligence — written for runners choosing their next start line, and kept alongside the 40,000 races you can enter from here.
Heart Rate Training 101: Decoding Your Data for Better Performance
You’re running slow, but your watch says Zone 5. Are you unfit, or is your data wrong? We break down the "Cadence Lock" glitch, explain why "Cardiac Drift" happens, and provide a step-by-step Field Test to calculate your…
Updated February 3, 2026Read the guide, run the race, then keep the race.
Your bib, chip time, photos and report — filed against the event page, season after season, so the guide you read before the start line has something to point back at.
Guides to the Abbott World Marathon Majors
All six →Road to Six Stars: The Ultimate Guide to the Chicago Marathon
Ready to find out why the Chicago Marathon is known as the "World Reco…
Road to Six Stars: The Ultimate Guide to the New York Marathon
Is the "City that Never Sleeps" the final stop on your Road to Six Sta…
Road to Six Stars: The Ultimate Guide to the Berlin Marathon
Ready to chase a personal best on the world’s fastest marathon course?…
Road to Six Stars: The Ultimate Guide to the Chicago Marathon
Ready to find out why the Chicago Marathon is known as the "World Record Factory"? As the …
Road to Six Stars: The Ultimate Guide to the New York Marathon
Is the "City that Never Sleeps" the final stop on your Road to Six Stars? The New York Cit…
Road to Six Stars: The Ultimate Guide to the Berlin Marathon
Ready to chase a personal best on the world’s fastest marathon course? As the second stop …
Training guides
Heart Rate Training 101: Decoding Your Data for Better Performance
The Laws of the Long Game: Science vs. Tradition in Running
The Base Phase: Why Running Slower is the Secret to Your Next PB
Eliminate Race Day Stress: The Fail-Proof Gear & Nutrition Checklist for Runners
The Final Countdown: A Definitive Guide to Peak and Taper
From Foundation to Firepower: Mastering the Build Phase of Your Training
A Complete Guide to Performance Nutrition
Heart Rate Training 101: Decoding Your Data for Better Performance
You’re running slow, but your watch says Zone 5. Are you unfit, or is …
The Laws of the Long Game: Science vs. Tradition in Running
Are you following outdated running rules? We dive into the science beh…
The Base Phase: Why Running Slower is the Secret to Your Next PB
Most runners spend their training in the 'Grey Zone'—too fast to recov…
Eliminate Race Day Stress: The Fail-Proof Gear & Nutrition Checklist for Runners
Preparation is the "fourth discipline" of running. This guide provides…
The Final Countdown: A Definitive Guide to Peak and Taper
You’ve spent months building the engine and tuning it for speed. Now c…
From Foundation to Firepower: Mastering the Build Phase of Your Training
Ready to get fast? Transition from base miles to race-day speed with o…
A Complete Guide to Performance Nutrition
Whether you're training for your first 5K or chasing a marathon person…
Races the guides keep pointing at
All events →
Start with the last race you ran.
Free, and about a minute.