Marathon and Races
NOTE: For details, please refer to the IUF Rulebook
Wheel Size For 24“ wheels, the outside diameter of the tire may not be larger than 24.333“ (61.8cm). age 0 and up
For 20“ wheels, the outside diameter of the tire may not be larger than 20.333“ (51.6cm). age 0-12
For 16“ wheels, the outside diameter of the tire may not be larger than 16.333“ (41.5cm). age 0-8
Pedals Metal ended pedals are absolutely prohibited at the races.
No metal must be able to touch the ground.
The exception to the "no metal ended pedals" rule is at the MUni (mountain unicyle) events and the Marathon events.
Crank Lengths For 24” wheels, crank arms may be no shorter than 125mm (5”).
For 20” wheels, crank arms may be no shorter than 102mm (4”).
For 16” wheels, crank arms may be no shorter than 89mm (3.5”)
The above conforms to the new rules established by the IUF Rules Committee in December 2003, and is different from previous UNICONs.
Final 100m, 400m, 800m, One-Foot Riding, Wheel-Walking, and Obstacle Course. The participants with the highest points will be the UNICON XII World Champion in Racing. Those who place first in each of the various categories are first place winners of the categories, and NOT a Racing World Champion.
Age Group 0-8 (16inch), 0-10 (20inch), 11-12 (20inch), 0-13, 14-15, 16-18, 19-29, 30-44, 45-65, 66-
For 100m, 400, 800, One-Foot Riding, Wheel-Walking, and Obstacle Course
Events based on age groups, male, female, and wheel diameters
100m, 400m, 800m, 50m One-Foot Riding, 30m Wheel-Walking, Obstacle Course
Events with no restrictions on age groups, male, and female
Events with no restrictions on crank lengths
High Jump, Long Jump, Flat Road Gliding, Flat Road Coasting
<An electronic timing system>

An electronic timing system is going to be used for the races on the track. In order to have accurate data, all heats and lane assignments will be determined before the race start. Please show up for all track races you have signed up for and if you decide to not race, please let Unicon XII registration or the official know as soon as possible. Heats that are half empty because of people not showing up is not fair to other competitors racing in that heat and waste time.

700c exhibition race

The 700c wheel races are being introduced for the first time as exhibition  events. There will be awards for the winners, but these races will not be part of the points accumulation for world championships. All requirements for track unicycles must be met, except for the following:
      Wheel size:  Between 24.333" and 29.5" in diameter (standard 24” unicycles are not allowed in this race)
     Crankarm length:  no restrictions

Questions regarding IUF and UNICON XII rules will be accepted on the FAQ section.
10K Marathon
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The 10K Marathon will have a Standard Class and an Unlimited Class run at the different time. Each competitor may enter both of these classes. Standard Class competitors compete in their age group on their track racing unicycles. The Unilimited Class is for any competitor, regardless of age, with no restrictions on wheel size, crank arm lengh, or gear ratio.