Stephen Biebelhausen may have set a record with his Stroller Mile race time.
An American woman set out from Chicago to bicycle all over the world in record-breaking fashion.
Chestnut devoured 83 all-beef hot dogs and buns in 10 minutes while Kobayashi ate 66 hot dogs and buns.
He's also the world's oldest surviving male World War II veteran, according to Guinness World Records.
Together, they have a combined age of just under 571 years -- and counting.
A runner set an unofficial world record for the fastest men's marathon time at the Chicago Marathon.