A charity bike ride is set to take place this Sunday as cyclists attempt 25, 50 and 100-mile routes around Hertfordshire and Bedfordshire.

Participants will all start at Knebworth House and choose from three routes travelling through areas including Stevenage, Letchworth GC and Shefford, before returning to the Grade II-listed building for the finish.

It is the first year that the annual event, where those taking part can raise money for a charity of their choice, will include a 100-mile option.

Entry fees are £17.50 for the 25-mile route and £18.50 for both the 50 and 100 mile routes.

Discounts are available for team and club entries.

For full entry details, maps of the course and how to sign up, visit www.bike-events.co.uk