United Kingdom Flyball League (UKFL) uses a patented ulna measuring device, measuring the distance between the 'elbow' and bone of the stopper pad with a minimum height of 6 inches (15 cm) and a maximum of 12 inches (30 cm).

The first team to have all four dogs cross the finish line error free wins the heat.

Penalties are applied to teams if the ball is dropped or if the next relay dog is released early.

Flyball has now expanded into many countries, including Australia, Canada and South Africa, and in European countries such as Belgium, Czech Republic, Finland, Germany, the Netherlands, Poland, Austria, Hungary, France and the United Kingdom have national flyball tournaments and also hold joint annual European championships.

It is an especially effective way to burn off dogs' energy with a high drive to work, such as Border Collies and Staffordshire Bull Terriers.

Flyball is not limited to the breed's size, as smaller dogs such as Patterdale Terriers, Jack Russell Terriers, Whippets and even miniature poodles, often compete with great success in mixed-breed teams (teams consisting of dogs of various sizes and breeds).

Competitions are usually hosted by a specific local flyball club but under the sanction of a national governing body.

The host flyball club uses Head judges who are licensed by the national sanctioning organization and the club will apply to the national sanctioning organization for permission to hold a competition on a specific date or weekend; most competitions are two-day weekend events.

A slightly smaller scale to NAFA's CanAm Classic, it hosts over 100 teams and runs 3 to 4 rings of races over the course of three days.

These systems are similar in nature, with the following primary components: A light tree to indicate the countdown to race start, optical gates positioned at the start/finish line to detect line faults, and a high-precision digital clock to time the race.

More recently, high-speed consumer cameras such as the Casio Exilim EX-FH100 have been used to record video at much higher frame rates.

Some teams have started using software designed for other sports, such as the cSwing Golf Analysis tool, to aid in the capture and review of high speed camera footage of flyball passes.