Home to Race to the Stones and Race to the King, the UKs biggest Ultras. www.thresholdtrailseries.com
The Threshold Trail Series combines the four best-loved endurance events in the UK. Whether you decide to run or walk, each event offers a unique challenge using a variety of terrains, gradients, elevations, distances and awe-inspiring landscapes. DIXONS CARPHONE RACE TO THE STONES
Distance: 100km�Route: Lewknor to Avebury�Location: The Ridgeway�Date: 10 – 11 July 2021
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HEINEKEN RA
26/05/2026
25 DAYS TO GO UNTIL RACE TO THE KING 👑
We cannot wait to welcome you all to the beautiful South Downs. Let us know which route you're doing in the comments.
🌊 Coastal 50k
🏰 Castle 50k
👑 100k non-stop
🌳 Monarch's Loop 30k
⭐ 80k non-stop
22/05/2026
Just 50 days until we're back on the Ridgeway for Race to the Stones 2026 🙌
We cannot wait to get on the trails for an epic weekend. Will you be joining us? 👇 😎
Race to the Stones is almost HERE 🙌
We’re counting down the days to welcoming you all to the Ridgeway, and we can’t wait to see it come alive.
We're so excited to be joined by Escape the City Hiking Club who will be hiking the full 100k across two epic days. If you spot them out on the trail, give them a cheer (and a wave 👋) - they’re going to smash it!
💬 Why does community matter in running?
We asked our 2026 Community Partners to share what running together really means to them.
From creating safe, welcoming space, to making running and walking truly accessible for everyone - this is what community is all about 🙌
Because it’s not just about miles - it’s about belonging.
✨ Introducing our 2026 Community Partners ✨
We’re proud to announce our 2026 Community Partners across Threshold Trail Series & Endure24! 🙌
We’re committed to creating events where everyone feels welcome, supported, and able to take part. Partnering with these inspiring communities and groups helps us make events more inclusive, accessible, and safe for all 💚
We recently collaborated with our community partners for a short run finishing at the top of Primrose Hill in London. Afterwards, we collaborated to create fresh, inspiring quotes that you’ll see on our event route signage this summer!
Special thanks to our Partners HIGH5, P20, Tenzing and Profeet for supplying the goods to our community members on the day.
14/05/2026
😎 Partnership Announcement
We’re excited to welcome as our Official Suncare Partner.
P20 will support our flagship events, Endure24 and the Threshold Trail Series, for those who prepare for long hours outside, across a full day and night, from 24 hours of solo or team laps to long miles and open trails.
Whether it’s settling into the rhythm of lap after lap at Endure24 or covering 100k on the Ridgeway at Race to the Stones, our events are about sustained effort, changing conditions, and serious time outdoors. Sun protection should work just as hard.
With P20 built for endurance, our community can stay focused on the challenge, not reapplying.
Welcome to the Threshold family, P20, we’re thrilled to have you on board!
01/05/2026
Race to the King is just 50 days away! 👑
We’re counting down to an unforgettable day out on the trails - will you be joining us this summer?
Let us know which challenge you’re taking on in the comments below 👇
It started with a walk, now they’re taking on 100km 🏔️
We met up with Escape the City Hiking Club for a training hike across the Seven Sisters to talk community, connection and the lead up to Race to the Stones 100k.
For many, Race to the Stones will be their first ever ultra - and this 22km hike along the South Coast was part of their training journey; helping them build confidence, rack up the miles and get excited for what's ahead ☀️
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Hiking is a chance to connect with nature; take in the views and experience the beautiful landscapes we are lucky to have in the UK.
Join us this summer for an unforgettable journey – secure your spot and walk, run or jog an ultra.
https://www.thresholdtrailseries.com/
We spent the weekend soaking up the South Coast, hiking 22km across the Seven Sisters with Escape the City hiking group as part of their build up to the 100k at Race to the Stones this summer ☀️
We're proud to be partnering with this community and hope to encourage more young people to get outside, explore landscapes, and realise that taking on an ultra doesn't have to mean running.
Ultras can be walked too and there is a whole community of hikers out on the route at Race to the Stones doing exactly that 🙌
We can't wait to welcome this group, and many more hikers, to the Ridgeway soon.