Uniquely in the sporting world, competitors are graded by ability, irrespective of age or sex, and there is regular promotion and relegation between divisions. Paddlers new to racing compete over 4 miles in division 9. Divisions 8 and 7 are also over 4 miles, whilst the higher divisions race over 8 or 12 miles. For those with the stamina, there are some longer races, including the 125 mile Devizes to Westminster classic.

Races are held all over the country organised by local clubs. A national competition, the Hasler Championship, is divided into regions. We compete in the southern region, but our geographical location makes it easy for us to take part in races in other regions.

Races take place throughout the year, but most are held between Easter and the end of October. Hasler races usually take place on slow moving rivers or canals, but other races take place on more challenging water: rivers, canals, lakes, the sea, down rapids, over weirs, run round locks, under low bridges. You name it, marathon racers have done it!