Thousands set off this morning from 9am in the third annual running of the event, with a route winding through Woodhouse Moor, Adel, Bramhope, Pool in Wharfedale and Otley.
Here are some of the first pictures from the event, taken by Steve Riding and Press Association photographer Danny Lawson:
5. Comedians Ivo Graham and Rosie Jones, ahead of the Rob Burrow Leeds Marathon
Comedians Ivo Graham and Rosie Jones, ahead of the Rob Burrow Leeds Marathon, Relay, and MND Mile in Leeds. Danny Lawson/PA Wire. Photo: Danny Lawson
6. Competitors during the Rob Burrow Leeds Marathon
Competitors during the Rob Burrow Leeds Marathon, Relay, and MND Mile in Leeds. Danny Lawson/PA Wire. Photo: Danny Lawson
7. Competitors during the Rob Burrow Leeds Marathon
Competitors during the Rob Burrow Leeds Marathon, Relay, and MND Mile in Leeds. Danny Lawson/PA Wire. Photo: Danny Lawson
8. Competitors start the Rob Burrow Leeds Marathon, Relay, and MND Mile in Leeds
Competitors start the Rob Burrow Leeds Marathon, Relay, and MND Mile in Leeds. Danny Lawson/PA Wire. Photo: Danny Lawson