RunLetters SuperHalfs 2026

Train this summer. Race your best half marathon this fall.

A 16-week group coaching program for consistent runners ready to race smarter, train better, and cross the finish line knowing they left nothing behind. Whether this is your first 13.1 or your fifth, the plan is built around where you are — not a generic template.

You've been running consistently. You show up, you put in the miles. But something isn't clicking.

You keep getting injured. Or you make it to race day and blow up in the second half. Maybe you've downloaded a training plan before but weren't sure how to actually follow it. Maybe you're repeatedly running the same routes at the same pace and hoping that's enough.

But you're watching other runners blow past you and wondering what they know that you don't.

Here's the secret: those runners don't train harder, they train smarter. They follow a structured plan made for them. They have a coach who adjusts their schedule when life happens. And who tells them exactly how to pace their race on that specific day.

I was winging it for a long time, too. This program is what I wish I'd had.

The Solution

RunLetters SuperHalfs Program

A 16-week training program so you arrive at the start line healthy and ready. No more guessing on race day.

Three races. One program.

Cohort 1

Copenhagen Half Marathon

Race: Sep 20, 2026 | Starts: Jun 1

Cohort 2

Cardiff Half Marathon

Race: Oct 4, 2026 | Starts: Jun 15

Cohort 3

Valencia Half Marathon

Race: Oct 25, 2026 | Starts: Jul 6

This program is designed for runners racing one of the SuperHalfs between September 20 and October 25, 2026. Your personalised plan will reflect your specific race date.

How it's structured

Phase 1

The foundation

Weeks 1–4 — build your base, fix the leaks, understand your numbers

Phase 2

The build

Weeks 5–14 — add volume, sharpen intensity, run with intention

Phase 3

The taper

Weeks 15–16 — dial it back, stay sharp, trust the work

Phase 4

Race day

Race smart, have fun, finish strong.

Program timeline

Cohort 1
Copenhagen

Jun 1 — Sep 20

Cohort 2
Cardiff

Jun 15 — Oct 4

Cohort 3
Valencia

Jul 6 — Oct 25

Mile Marker
Sessions

Jul 6 — Sep 20

Cohort 1 — Copenhagen

Cohort 2 — Cardiff

Cohort 3 — Valencia

Mile Marker Sessions

Your Coach

Meet Caroline Claassen

My main goal is to help you run your best race while enjoying the process and staying injury-free.

Caroline Claassen

Founder, RunLetters Run Coaching

I am a UESCA certified running coach, a road and trail runner, and the founder of RunLetters. I co-lead Ericeira Runners locally and run the global RunLetters Run Club. I have raced everything from 10Ks and half marathons to marathons and ultra marathons across both road and trail.

My half marathon PR sits at 1:23:43. I placed 3rd at the Lisbon Marathon 2025 among the Portuguese women (10th female overall), became 2nd female at Ultra X Madeira 50K (4th overall), and recently ran my longest distance at 107K.

What's included

Your personalised training plan

Built for your current fitness, schedule, and goal race. Not a template.

Mobility and strength sessions

Short and runner-specific. Built to keep you healthy and injury-free through the plan.

8 Mile Marker Sessions

Live deep-dive sessions on what actually moves the needle. Every session is recorded.

Weekly group Q&A call

Show up, ask anything, get unstuck and keep moving.

Race week guide

Taper anxiety sorted. What to eat, wear, do, and not overthink.

Your personalised race strategy

Know exactly how to pace and approach your race before the start line.

RunLetters Crew sweater

A super comfy sweater perfect for after the race and long after.

The RunLetters Crew community

A group of runners at your level, cheering you on every week.

30% off NeverSecond nutrition

Exclusive discount for the full 16 weeks of training.

2-week post-race recovery plan bonus

The race is not the finish line. Two structured weeks to recover well, protect the fitness you built, and keep the momentum going.

8 Mile Marker Sessions

Live sessions on what actually moves the needle

Every session is recorded and available for replay. Click any session to see what's covered.

01Welcome to the 16 weeks

How the program works, how to use your plan, and what to expect on race day. This first Mile Marker Session takes place in your cohort's first week.

02Nutrition throughout the plan

Fueling your training, not just race day — what to eat, when, and why it matters.

03Running form and efficiency

Cadence, posture, and the small form leaks that slow you down or lead to injury.

04Mobility for runners

What actually matters, what you can skip, and how to stay consistent without adding hours.

05Strength for runners

The non-negotiable minimum — what to do, how often, and how to fit it around training.

06Pacing strategy and how we train it

Effort zones, even splits, and why going out too fast is the most common race mistake.

07The mental side of racing

Hitting the wall, race nerves, and how to stay in the run when it gets hard.

08Taper week survival guide

Why you feel terrible in taper and why that means everything is working.

This is for you if...

✓ You're in if you...

Have a half marathon on the calendar

Train consistently (or want to start)

Want a real result, not just a finish

Are ready to show up for yourself

Take feedback and act on it

✗ This is not right if you...

Can't commit to at least 4 days a week

Want a plan that does the work for you

Are looking for a passive experience

Expect results without showing up

Investment

16-week program

$599

~€515 · ~£445

This is not a subscription. One payment and you're in for the full 16 weeks plus the 2-week recovery bonus. Want to pay in two instalments? Get in touch before applying and I'll sort it for you.

Guarantee

If you show up for the first two weeks and it's not the right fit, just say so. I'll make it right and will refund you. No hard feelings!

Ready to run your fastest half yet?

Step 1: Sign up below and secure your spot
Step 2: I'll review and get back to you within 48 hours
Step 3: If it's a fit, you're in!