A simple challenge, Cardiff to Tenby “100 miles, on a bike, in a day”
Not a race, not a sportive, just a ride to Tenby!

Our aim is to get people on their bikes and to raise as much money as we can for good causes.


Who can take part in Carten100?

Riders are usually of mixed ability and often new to this type of distance, so we encourage everyone to do some training for a few weeks prior to the ride to prepare the legs and backside!


Preparation of your bike is also essential as punctures and mechanical failures tend to happen to bikes which have not been in use for a while. If you do come across any problems that may stop you from completing the ride, the support crews will do whatever they can to help you to finish.

Our CARTEN100 Sponsors

Our fundraising campaign for 2022 has just begun and the 2022 CARTEN100 cycle shirt sponsors include ResolveIt, AD Gas Services, Bridgend Ford, Loop of Wales, Merrello Clinic, United Studios with more to come.


All sponsorship from shirt sponsors is passed directly to the main CARTEN100 charity directly, LATCH for 2022.


We thank all our sponsors for their generosity over the years, they have been the backbone of the success of the CARTEN100 fundraising.

Welcome to Carten100

The CARTEN100 cycle ride takes place roughly over a ten hour period as we take a leisurely ride from Cardiff to Tenby. While the main aim is to get people on their bikes, a huge benefit of the day is the money the riders raise for charity.

Our Sponsors

CARTEN100 2022

Our History

The Journey

The CARTEN100 takes a fairly direct route from Cardiff to Tenby, using A-Roads, B-Roads and cycle routes. There are some climbs, none too difficult, but in Wales there is not a lot of flat land!

CARTEN100 2022 Entry is now closed

THE 2022 CARTEN100 will take place on the 7th May

Our History

From an initial four riders in 2004 the challenge of riding the 100 miles from Cardiff to Tenby has kept growing in popularity with more and more friends, colleagues and acquaintances joining in. Today CARTEN100 now has over 2200 riders who take on the challenge. Riders are encouraged not to rush to Tenby but to enjoy their day out followed by a celebratory drink or two in Tenby. “It is a challenge, never a race”.


Our November newsletter announces the opening of the CARTEN100 ride and contains a link to the entry form, this is the earliest possible way of entering the CARTEN100. The ride then opens to the general public a few days later with the link to the entry form accessible here on our website and on our social media.

Charity Work

While our main aim is always to get people on their bikes, a benefit of the day is the fundraising that happens alongside. This is either direct sponsorship from company logos on the cycling shirts or our cyclists getting sponsored individually per mile. We change our main charity every year ensuring we are getting the message out there of the different causes across Wales.


This year we have chosen LATCH. The charity supports the children who are receiving treatment for cancer at the Children’s Hospital for Wales and their families. Their catchment area stretches from Chepstow in the South to Aberystwyth in the North where an unbelievable 70 new cases are diagnosed every year.

carten100 rider

Carten100 Update 01/09/2021

CARTEN100 is less than three weeks away, woo hoo! Riders' shirts and numbers are being packed and despatched at the moment. We also have updates on the route, a change to our usual start and our finish and of course all our COVID precautions that you must be aware of.

The Social 100 Mile Bike Ride

Four years ago my younger brother Chris wanted to enter Ironman wales, I’ve competed in triathlons over the years, I’m 53 and little brother is 13 year younger...

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