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T-Series Racing offer a variety of challenging self supported ultra marathon events in the UK. The theme of all T-Series races is the goal to complete these events on foot, non-stop and self-supported carrying all of your own food and equipment (water is provided) from the start of the race to the end.

Our partnership with Go-Tek provides individual real time race tracking via their GPS devices. Supporters can watch your journey unfold minute by minute as you progress towards the finish from their comfort of their own home. Never before has a race been as interactive as a T-Series event.

We believe the T-Series events offers a perfect opportunity for those people looking for some long distance challenges.


If you would like to get in touch with us, we can be contacted as follows:

Mobile: +44 7971007276 (Gareth)

Telephone: +44 7747 090309 (Liz)

Email: gareth@tseriesracing.com (Race Director)

Email: lizfretwell@tseriesracing.com (Race Operations)

Email: jasmine@tseriesracing.com (Race Support)

Twitter: @tseriesracing

Facebook Group: Click Here

Gareth Fretwell

Gareth Fretwell brings with him a wealth of experience in Ultra Running having completed Marathon Des Sables, Pen Y Fan,Tenerife Bluetrail, Endure24 (solo) and the Great Wall of China Marathon as well as completing T60 on more than one occasion.

Gareth has been involved in every T-Series race since the start either as a competitor or a volunteer and in 2017  he took on the role as Race Director bringing his 20 plus years of military experience in the RAF combined with race experience to support T-Series racing.

Email: Gareth@tseriesracing.com


Liz joins the T-Series with a passion for running and wants to support like-minded athletes succeed in the fantastic T-Series events.

Over the years, Liz has run the London Marathon, Oxford and Reading Half-Marathons but her favourite distance is 100km having run the Thames Path Challenge and a number of Endure 24 events.

Not limiting herself to the UK running scene, Liz has ventured further afield and competed in the Tenerife Bluetrail and the Great Wall of China Half-Marathons.

Email: lizfretwell@tseriesracing.com