Ericeira Runners group trail running along coastal cliffs
Media Kit 2026

The Running World, Curated

A weekly newsletter for runners who are deeply in love with the sport and care about quality. Every recommendation earned on real miles.

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Newsletter Readers
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Open Rate
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Growth (Last 30 Days)
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The Founder
Run by a Runner
Caroline Claassen at a trail race finish line

Caroline Claassen

Founder of RunLetters · UESCA Certified Running Coach

I am a Dutch runner and UESCA certified running coach based in Ericeira, Portugal. I have been running for over 10 years, but it was in 2024 that I really started taking the sport seriously.

I race both road and trail, from 10Ks to ultra marathons, and have been fortunate enough to podium various times. But my real love for running lies in the community. The relationships, the memories, and the experiences you gain through this sport are incredibly life-enriching, and that is something I want to share with others.

That is why I coach athletes internationally and built RunLetters, to share the best of running, and to do so with a bit more care than the social media algorithms do. 12+ years in marketing taught me one thing: people want better content, not more of it. That is the entire philosophy behind RunLetters.

UESCA Certified Trail & Road 12+ yrs Marketing Based in Portugal
Why RunLetters
What Makes This Different
Social media is noisy. Runners deserve better than clickbait and generic listicles. RunLetters delivers curated recommendations, trusted content, and a voice runners actually look forward to.

Curation, Not Volume

I personally pick everything that goes into RunLetters. If it is not genuinely worth a runner's time, it does not make the cut. Just the best stuff, hand-picked every week.

Trust You Can Feel

I am a certified coach and I test every product on real runs before writing or filming anything. My readers and viewers know they are getting an honest take, always.

Every Friday, Without Fail

Five fixed sections land in the same inbox every week. No guessing when a feature runs or scrolling to find it. Readers know exactly when and where to expect it, so your placement gets seen.

Newsletter
Small List, Big Engagement
RunLetters is not about scale. It is about a readership that actually opens and cares.
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Subscribers
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Open Rate
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Click-Through
Weekly
Every Friday

The industry average open rate for media newsletters hovers around 20-25%. RunLetters roughly doubles that. My readers open because they genuinely look forward to it every week.

Readers by Country

🇺🇸
United States
63.8%
🇬🇧
United Kingdom
13.7%
🇨🇦
Canada
4.2%
🇦🇺
Australia
2.4%
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Ireland
2.1%
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Netherlands
2.0%
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Germany
2.0%
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Portugal
1.7%
The Audience
Who You Are Reaching
Runners who buy gear, train hard and sign up for races. They read what lands in their inbox and trust editorial over ads and recommendations over social media.
🏃 Hobby runners (road & trail)
🏆 5K to ultra marathon focused
👜 Gear-conscious buyers
🌎 English-speaking, global
⛰ Race-seekers & adventurers
The Trajectory
Growth That Keeps Compounding
From zero to over 7,700 runners in just over a year, with the fastest growth happening in the last few months.
May 2025 Now
Work With Me
How I Work With Brands
Every edition features just one brand in the Gear & Gadgets section, so you won't be splitting attention with anyone else. The write-ups are editorial, not ad copy. See exactly what that looks like in past editions.
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$195

Single Feature

Your brand featured once in the weekly newsletter, written in my editorial voice, sent to a 52%+ open rate audience.

Includes: One sponsored section · Pick your own Friday send date · Direct link to your product or landing page · Optional UGC add-on at checkout · Price excl. VAT and mandatory product seeding
Reserve This Slot
Optional Add-On
Add UGC You Can Run Anywhere
UGC keeps working for you after the newsletter feature: on your own socials, your product page, your ads. You can add it to either package at checkout.
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+$250

UGC Basic

One vertical video (15 to 30 seconds) of me using your product on a run, edited and ready to post.

Includes: 1 vertical video (9:16) · Filmed on real runs · Organic use on your own channels · Per feature, excl. VAT

Want to run the videos as paid ads? Add 6 months of paid usage rights to either option for +$100 per feature. On the Yearly Pack you get four sets (one per feature) at 10% off: Basic $900, Plus $1,260, paid rights $360.

Let's Talk
Want to Reach Runners
Who Actually Pay Attention?

Then get in touch and let's talk about how RunLetters can help your brand.

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