How fast does a roller blade travel?

Olympic speed skaters skate 500m, which is considered an all out sprint, in about 35 seconds. This means they are traveling one Kilometer in 70 seconds, with top speeds of over 40 miles per hour.

Olympic speed skaters skate 500m, which is considered an all out sprint, in about 35 seconds. This means they are traveling one Kilometer in 70 seconds, with top speeds of over 40 miles per hour.
36.80 MPH