Training tips, race guides and coaching insights from Nenad Starc - ESCI Certified Triathlon Coach, Ironman finisher, and a founder of Peak Within Coaching. Based in The Netherlands, coaching athletes worldwide.
What a Triathlon Training Camp in Mallorca Actually Does to You
I want to be honest with you about something before I start.
This week, I wasn't the coach.
I was the athlete.
I packed my bike, flew to Palma, and spent a week training at the Scientific Triathlon x Next Level Camp triathlon training camp in Mallorca — not as staff, not as an observer, but as a participant. Doing the sessions. Following the plan. Feeling every kilometre in my legs by Thursday.
And it was exactly what I needed.
From Zero to Ironman in Three Years — What I Actually Learned
I started with no cycling, swimming, or running background. Three years later I finished Ironman Copenhagen in 11:58. Here's what I actually learned.
Triathlon Race Calendar Netherlands 2026 —The Complete Guide
The Netherlands is one of the best countries in Europe to race triathlon. The courses are mostly flat and fast, the organisation at major events is excellent, the cycling culture means drivers respect you on the road, and the race calendar runs from May all the way through to October.
Whether you're planning your first sprint triathlon or targeting a full Ironman, this is your complete overview of the events to know in 2026 — with coaching notes on each one.
TrainingPeaks for Beginners — How CoachedAthletes Use It
When a new athlete joins my coaching programme, one of the first things I do is set them up on TrainingPeaks. And almost every time, the response is the same:
"This looks complicated. Where do I even start?"
I get it. TrainingPeaks has a lot of features. But as a coached athlete, you only need to understand a handful of them — and once you do, it becomes the most useful training tool you'll ever use.
This guide is for athletes who are new to TrainingPeaks and want to know exactly what to look at, what to ignore, and how to get the most from it as part of a coaching relationship.
From Couch to Sprint Triathlon in 12 Weeks— Is It Actually Possible?
I get this question a lot. Usually it comes from someone who's just registered for their first sprint triathlon — maybe a work colleague dared them, maybe they watched a race and something lit up inside them — and now they're staring at the entry confirmation wondering what on earth they've done.
So let me answer it directly: yes, it is possible. But with important conditions attached.
How Much Does Triathlon Coaching Cost?And Is It Actually Worth It?
It's the question every athlete asks before reaching out to a coach — and then feels a little embarrassed about asking.
Don't be. It's a completely fair question. You work hard for your money. You have a family, a mortgage, a life. Spending money on coaching is a real decision, not a small one.
So let me answer it honestly — what coaching actually costs, what you get for it, and how to decide whether it makes sense for you right now.
Ironman 70.3 Westfriesland — Course Guide, Race Tips & What to Expect
I've raced Ironman 70.3 Westfriesland twice. The first time, I was a nervous wreck who had no idea what the swim start would feel like in open water with 1,500 other athletes around me. The second time, I knew exactly what to expect — and that knowledge made every difference.
If you've entered Westfriesland this year, or you're thinking about it, this is the race guide I wish I'd had before my first start.
Triathlon Coaching in the Netherlands — in English
Looking for an English-speaking triathlon coach in the Netherlands? Peak Within Coaching offers personalized online triathlon coaching for expats and international athletes based in the Netherlands.
Why Triathlon Might Be the New Year’s Resolution That Actually Sticks
Every January, the same question comes up: “What’s my New Year’s resolution going to be this year?”
Lose weight. Get fitter. Be healthier. Try something new. All great goals — but also the same ones that often fade by February.
For many beginners and mid-pack athletes, triathlon quietly checks every one of those boxes. But like any resolution worth keeping, it comes with both rewards and challenges. Let’s talk honestly about why triathlon can be an incredible New Year’s goal — and what you should know before committing.
Supercharging Your Swim Training: Swim Tools
The best swim training tools for triathletes — pull buoy, fins, snorkel, kickboard and smart goggles explained by a certified triathlon coach.
Why Hire a Triathlon Coach? What Coaching Gives You That You Can't Get Alone'
Why every beginner triathlete deserves support from day one.
When a new athlete reaches out to me, I almost always ask the same question early in the conversation:
“What are you hoping coaching can give you that you can’t get on your own?”
For seasoned athletes, their answer is shaped by race splits and training history.
For beginners? Their answer is shaped by something even more important:
The desire to start the right way. Without confusion, injury, or burnout.
How a Triathlon Coach Personalizes Training for Every Athlete
How a certified triathlon coach personalizes training for beginners, time-crunched athletes, and competitive performers. Online coaching from the Netherlands.
How to Build a Triathlon Annual Training Plan (ATP) — With a Real Example
In this follow-up, I want to show you what that planning actually looks like in practice — by walking you through my own Annual Training Plan (ATP), my race classifications, and how each training phase fits together.
Surviving Winter Like a Triathlete: How I Built My Indoor Training Haven
How I set up my triathlon pain cave for winter training — smart trainer, treadmill, projector and fans. Indoor training tips from a certified coach in the Netherlands.
Planning Early for Your Triathlon Racing Season Is the Key to Success
Start planning your triathlon season early for better performance. Learn the A-B-C race system and why hiring a coach in the planning phase makes all the difference.'
Running Through History: My Amsterdam Marathon 2025 Experience
My experience running the 50th TCS Amsterdam Marathon 2025 — two months after Ironman Copenhagen. Race report, course highlights, and reflections from a triathlon coach.
Ironman Copenhagen 2025
My personal Ironman Copenhagen 2025 race report — 3.8km swim, 180km bike, full marathon. Finish time 11:58:25. From a triathlon coach who started from zero in 2022.