Energetic participants laced up their running shoes for a day of exploring the oasis in the heart of Leeds.
The half marathon involved five gruelling laps of the 700 acre park, with stunning views of Waterloo Lake and concluding with a rewarding ascent to The Mansion building at the end.
Meanwhile, 10k participants tackled the course that comprised one lap of the park before two larger circuits, each offering glimpses of the natural environment before a final climb to The Mansion.
YEP photographer Steve Riding was there to capture all the action. Here are some of the best photos -
13. Run Yorkshire Half Marathon and 10k
The 10k took in some of the park's beautiful scenery. | Steve Riding Photo: Steve Riding
14. Run Yorkshire Half Marathon and 10k
It is the largest park in Europe. | Steve Riding Photo: Steve Riding
15. Run Yorkshire Half Marathon and 10k
Half marathon runners at the start of the race. | Steve Riding Photo: Steve Riding
16. Run Yorkshire Half Marathon and 10k
Energetic runners took on the intimidating challenge. | Steve Riding Photo: Steve Riding
17. Run Yorkshire Half Marathon and 10k
The energy was high and runners were full of spirit. | Steve Riding Photo: Steve Riding