The Queen has established many records during her time as Britain's monarch, but a few rulers still rank ahead of her for the longest reign in world history.

Her Majesty did set the record for the longest-reigning British monarch back in 2015, when she surpassed her great-great-grandmother Queen Victoria's mark of 63 years and 216 days.

This year, she reached the 68th year of her reign. But if the Queen hopes to be crowned the world's longest ruler, she's still got a few years to go!

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Queen Elizabeth II and the record for longest-reigning monarch

In fact, the Queen has exactly four years left until the record is hers, as of today, May 27, 2020. She would own the record for the longest reign among monarchs of sovereign states on May 27, 2024.

Currently, she sits fourth on the list, trailing the durations of Johann II of Liechtenstein (70 years, 91 days), Bhumibol Adulyadej of Thailand (70 years, 126 days), and, the record-holder, Louis XIV of France (72 years, 110 days).

The Queen's reign today stands at 68 years and 111 days. Four more years would put her at 72 years and 111 days, one better than Louis XIV.

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The Queen's historic reign began in 1952

Queen Elizabeth II's reign began on Feb. 6, 1952, and she's shown few signs of slowing down ever since. Her Majesty recently celebrated her 94th birthday and would be 98-years-old should her reign surpass Louis XIV's record in 2024.

Today, she remains in lockdown at Windsor Castle, where she is reportedly "determined" to return to her usual public duties when it's safe to do so.

Many more records and milestones lie ahead for the Queen! We look forward to seeing her reach them.