Most Rubik's cubes solved on a unicycle

According to Official Guinness Records,

The most Rubik's cubes solved on a unicycle is 250, achieved by Caleb McEvoy (America) in Ukarumpa, Papua New Guinea, on 31 March 2018.Caleb spent over 2 hours 35 minutes on his unicycle whilst achieving his record.

For a complete list of 2018 records, please visit 2018 Guinness Records in Papua New Guinea.

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Other Papua New Guinea records that might interest you:

• First female to row two oceans solo
• First female to row the Pacific Ocean solo (three stages)
• Highest flow rate from a vertical gas well
• Longest solo row across an ocean
• Largest bowers built by bowerbirds
• Largest butterfly
• Largest species of cave-dwelling bat