Every sport has its records that are considered "unbreakable." Every now and again, an unlikely hero emerges to break that incredible feat. In a sense, almost no record is completely unbreakable, although some records are extremely safe.
The most "unbreakable" record that was eclipsed in recent memory was probably Cal Ripken Jr.'s passing Lou Gehrig for the most consecutive baseball games played. Other than that, most, if not all, truly safe and meaningful records have remained intact.
Barry Bonds does not count.
I speak of baseball purposefully because both NASCAR and Major League Baseball have something in common when considering records: the so-called "Modern Era."
Basically, this means that each sport has evolved so much over time that some records, set in days prior to the "Modern Eras," have made it so that some records are indeed unbreakable.
For instance, any pitcher who wins 300 games in baseball today is genuinely considered a lock for the Hall of Fame. Cy Young won 511 games in his career. This record will never be broken. No pitcher can possibly average 30 wins a year for 17 seasons in the modern game. Few pitchers even get 30 decisions per year, let alone wins.
NASCAR is much the same. Drivers do not race as much as in the past. I have tried to include records that mostly remain in the Modern Era. In terms of NASCAR, that means after the 1971 season. 1972 was the year that the season was shortened from 48 to 31 races, no longer allowing for a chance for some records to be eclipsed due to the truncation.
Still, some records are so huge that they defy any sort of era. Here they are.