- Who
- Harvest for Kids
- What
- 303 total number
- Where
- Canada (Winkler)
- When
The most combine harvesters working simultaneously on a single field is 303, and was achieved by Harvest for Kids (Canada) in Winkler, Manitoba, Canada, on 4 August 2018.
The attempt took place along a 300 acre field of wheat, with combine harvesters of many decades facing each other, all working together for 5 full minutes.