RunLetters SuperHalfs 2026
Train this summer. race 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.
Three cohorts. 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 between September 20 and October 25, 2026. Your personalised plan will reflect your specific race date as long as it falls within this window.
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
Copenhagen
Cardiff
Valencia
Sessions
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 and available for replay.
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 you even get to 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
Mile Markers are live sessions where we dive deep into a topic related to the half marathon and your training. Every session is recorded and available for replay.
Welcome 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.
Nutrition throughout the plan
Fueling your training, not just race day — what to eat, when, and why it matters
Running form and efficiency
Cadence, posture, and the small form leaks that slow you down or lead to injury
Mobility for runners
What actually matters, what you can skip, and how to stay consistent without adding hours
Strength for runners
The non-negotiable minimum — what to do, how often, and how to fit it around training
Pacing strategy and how we train it
Effort zones, even splits, and why going out too fast is the most common race mistake
The mental side of racing
Hitting the wall, race nerves, and how to stay in the run when it gets hard
Taper 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...
✗ This is not right if you...
Investment
16-week program — one payment
$599
Spots are limited. When the group is full, that's it.
This is not a subscription. One payment and you're in for the full 16 weeks plus the 2-week recovery bonus.
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: Apply below — takes 3 minutes
Step 2: I'll review and get back to you within 48 hours
Step 3: If it's a fit, you're in!