| Distance | Boat | Class |
| 3.5 km (Actual 3.3 km) |
Lightning K1 | Under 10 Men, Under 10 Women Under 12 Men, Under 12 Women |
| Hody K2 | Under 10, Under 12 | |
| 6.5 km (Actual 8 km) |
K1 | Under 12 Men, Under 12 Women Under 14 Men, Under 14 Women Over 54 Men, Over 54 Women Over 59 Men, Over 59 Women Over 64 Men, Over 64 Women Over 69 Men, Over 69 Women |
| K2 | Under 12 Men, Under 12 Women Under 14 Men, Under 14 Women Over 54 Men, Over 54 Women Over 64 Men, Over 64 Women |
|
| C1 | Under 18 | |
| 13 km (Actual 12.6 km) |
K1 | Under 16 Men, Under 16 Women Over 34 Women, Over 39 Women Over 44 Men, Over 44 Women Over 49 Men, Over 49 Women |
| K2 | Under 16 Men, Under 16 Women Over 44 Men, Over 44 Women Mixed K2, Over 34 Women |
|
| C1 | Senior Men, Senior Women | |
| C2 | Senior Men, Senior Women | |
| 20 km (Actual 21 km) |
K1 | Under 18 Men, Under 18 Women Over 34 Men, Over 39 Men |
| K2 | Under 18 Men, Under 18 Women Over 34 Men |
|
| 26 km (Actual 25.2 km) |
K1 | Senior Men, Senior Women Under 23 Men, Under 23 Women |
| K2 | Senior Men, Senior Women | |
| All ages are calculated at 1st January 2018.
There must be at least 5 entries for a National Championship race to take place. Hody K2 classes are not National Championship races but the same quorum rules will apply. Where a race is inquorate, the paddler may transfer to another class for which they are eligible [see rule 43a in the Racing Handbook]. If the paddler does not wish to race, they are entitled to an entry fee refund if the organiser is notified within 1 hour of the planned class start time. |
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