Ten in Ten Run Series 2025

Saturday 12 April 2025

  • Saturday 12 April 2025
  • 08:00
  • £350.00 (Affiliated)
  • £370.00 (UnAffiliated)

Ten in Ten Run Series 2025

In the spring of 2025 Phoenix Running & Global Marathon Challenges are returning yet again with our very popular Easter Ten in Ten (TiT) and Twelve in Twelve (TweT) run series.  The Ten in Ten will be held from Saturday 12th April 2025 through to Easter Monday 21st April 2025 and the Twelve in Twelve will start 2 days earlier on Thursday 10th April 2025 through to Easter Monday 21st April 2025 so that both events finish on the same date with a huge party atmosphere.  Yet again in 2025 we are offering the ability to -DOUBLE-Down- at HALF Marathon distance and complete a series of 20 or 24 consecutive HALF Marathons held over the 10 or 12 consecutive days where you run TWO Half Marathons each day.      


Easter Special.

Massive £100 off the TiT & TweT entry fee until 14th April 2024.

Monstrous £150 off the Double-Down entry fee until 14th April.

Entry includes a bespoke GMC Finishers t-shirt actually presented to you at the finish line, plus, of course an epic set of medals.

No Medal entry option also available


Yet again in 2025 we're aiming to make it the biggest and best 10in10 and 12in12 ever.              
As the name(s) suggests this is a series of 10 or 12 consecutive running events held over 10 or 12 consecutive days where you choose - from 5km to 10k, half to marathon to ultra, you can complete as many, or as few, laps as you like each day. The laps will be based around our standard 5.3km, 3.28 mile, out and back, series of routes along the beautiful River Thames and are held on UKA/IAAF measured and certified routes. The runs are 5, 6 or 7 hour timed events, dependant on distance entered.  We also offer super-early starts from just after 6am so if you take advantage of these you can get up to 9 hours!  We welcome absolutely all abilities of runner - complete one lap on any day and you're both a finisher for that day and a winner in our eyes, or keep going and see how far you can go in the full time limit. Then come back and do it all over again and again and again.  

The Phoenix Ten in Ten & Twelve in Twelve 2025 series will be based from our Thames Path location in Walton on Thames (postcode KT12 2JB) where the Weir Pub (right on the start finish line) lays on a special daily 'runners breakfast' and there are plenty of accommodation options nearby. We use two routes from this location for the TiT & TweT and we plan to nate the route day-to-day to mix things up a bit. Our aid station or 'tuck shop' is famous for all its sweet and savoury goodies and CAKE and it will be back in full force in 2025 so you won't go hungry! 

There are other 10in10's and multi-day series, so what makes the Phoenix TIT & TweT so special? 

Well, as we hope you've come to expect from us, we're going to be doing something rather special and unique to us on the 'bling' front. Yet again we've gone all out on the bling and are inviting you to unlock your running potential by earning a set of Phoenix Potion Bottle medals.  

For those looking to complete all 10 days or 12 days we've got a beautiful set of Phoenix 'Potions' for you.  These are, of course, our usual BIG and bold bling (goes without saying really that we wouldn't compromise on the bling) but this time they're 3D with translucent glass insets, and the ribbons have Velcro joins so they can be easily removed. Each day you get a different coloured Phoenix Potion Bottle representing a different part of your 10in10 or 12in12 and taking you on a personal running journey.

  • Day 1 - The Fortitude Potion
  • Day 2 - The Gauntlet Potion
  • Day 3 - The Dauntless Potion
  • Day 4 - The Resolute Potion
  • Day 5 - The Perseverance Potion
  • Day 6 - The Adversity Potion
  • Day 7 - The Intrepid Potion
  • Day 8 - The Indomitable Potion
  • Day 9 - The Unbreakable Potion
  • Day 10 - The Invincible Potion

What do the Phoenix 'Potions' look like?  
Here are two examples - the first is the 'Adversity' Potion for day 6 and the second is the 'Unbreakable' Potion for Day 9. Each Potion is a different colour. 

The Adversity Potion 

The Unbreakable Potion  

And what do all the Potions look like on their ribbons? 

What else do I get?  
Oh and did we mention that all TiT & TweT finishers in the Half-Marathon, Marathon and Ultra Marathon Categories get a FREE Global Marathon Challenges 10in10 or 12in12 Technical Finishers T-Shirt - because you've earned it!
Or, if you finish all 10 or 12 days in a another distance, such as 5km or 10km, or indeed a mixture of distances then you get a FREE Global Marathon Challengers 'black' Technical Finishers T-Shirt - because you've also earned it!  

What are the distance options and associated time limits for each?  
As part of the sign up process to enter our Ten in Ten or Twelve in Twelve you will be asked to from the following four options for your chosen distance; 


  • Half Marathon - 5 hour time limit (hard cut off)
  • Marathon - 7 hour time limit (hard cut off)
  • Ultra Marathon - 7 to 9 hour time limit (hard cut off)
  • Timed event (mixed distances) - 7 to 9 hour time limit (hard cut off).

This is so we know what distance you are intending to complete so we can look after you accordingly and also what tech-shirt we should expect to give you. 

Please note: You can change distances if you change your mind, even on the day itself. Just let us know so we can monitor you against the right cut off.  

If you are unsure, just 'Timed event (mixed distance)' and feel free to change if you want. 

But what if I want to do some days but not all the days? 
That is absolutely fine - any day can be entered as a single / separate event and you can do whichever days you want.  

Will there be route maps? 
Yes, here are our two main route maps. 

Westbound Route  

Eastbound Route  

You mentioned the routes are flat, but I've heard there might be a bridge on some days, can I see an elevation map?  
Yes, here's one :  

OK, OK, there might be a little bridge on some days!  

What do the Potions mean? 
The short answer is that they mean you are awesome and the long answer is as follows;  

Day 1 - The Fortitude Potion 

Day 2 - The Gauntlet Potion  

Day 3 - The Dauntless Potion  

Day 4 - The Resolute Potion  

Day 5 - The Perseverance Potion  

Day 6 - The Adversity Potion  

Day 7 - The Intrepid Potion  

Day 8 - The Indomitable Potion  

Day 9 - The Unbreakable Potion  

Day 10 - The Invincible Potion  

Places will be strictly limited so don't leave it too late to enter. 

Minimum distance is 3.28 miles or as far as you can go in 7 to 9 hours. Off road trail, the terrain is riverside towpath. The overall course has no elevation gain / loss making this a flat and fast route.

We provide a physical running service and by entering our events you are purchasing an actual run, either by attending our events or by running the event virtually yourself. All participants in our events, both attended and virtual, will receive a free giveaway medal / memento from your run.