Entries are now open for the eighth annual Spires and Steeples challenge, which takes place on Sunday, October 18.
The Spires and Steeples Challenge is a charity 26-mile or 13-mile walk or run, starting in Lincoln or Metheringham and finishing at the National Centre for Craft and Design in Sleaford.
The event is in aid of Wheel Appeal, which provides sports wheelchairs, training and support to disabled people.
The course follows the Spires and Steeples arts and heritage trail.
The cost is £18 per person for the 26-mile challenge and £15 for the 13-mile event.
Places are limited to 1,000 and you must be aged 16 years or over to take part in the 26 mile run. Children aged between 14 and 16 can take part in the walks and the 13-mile run as long as they are accompanied by an adult.
A rise in running costs has led to a £3 increase for the 26-mile walk and run this year.
A spokesperson for the event said: “We hope this will be supported by our valued regulars and new participants for the 2015 challenge.”
To enter the challenge, or to see how you can get involved, contact the events team on 01522 870273 or email EventsOfficer@1life.co.uk.
Online entries are also being taken. Visit www.runnersworld.co.uk/spiresandsteeples2015 to enter.
You can also find the Spires and Steeples Challenge on Facebook or you can follow the event on Twitter @Spires_Steeples.
For more information, visit www.1life.co.uk/spiresandsteepleschallenge