UCI CYCLING REGULATIONS  C4 men  17 km 35 km  C3 men  17 km 35 km  C2 men  15 km 30 km  C1 men  15 km 30 km  C5 women  15 km 30 km  C4 women  15 km 30 km  C3 women  12 km 25 km  C2 women  12 km 25 km  C1 women  12 km 25 km T2 men  12 km 25 km  T1 men  12 km 25 km  T2 women  10 km 20 km  T1 women  10 km 20 km  H5 men  17 km 35 km  H4 men  17 km 35 km  H3 men  17 km 35 km  H2 men  12 km 25 km  H1 men  12 km 25 km  H5 women  15 km 30 km  H4 women  15 km 30 km  H3 women  10 km 20 km  H2 women  10 km 20 km  H1 women  10 km 20 km  For courses with unique and desirable features, exceptions may be permitted at the  discretion of the UCI.  (text modified on 26.06.07; 01.02.08; 01.02.09; 01.01.10; 01.02.11; 01.10.13; 01.02.14,  01.02.19)  Starting Order for Time Trials  16.7.010  The UCI may decide to have several sport classes and/or age categories start together  as one group. The starting order of sport classes in time trials shall be established in such a way as to  minimise the possibility of the athletes of one sport class passing the athletes of another  sport class (i.e.: C5-C4-C3, etc). Within each sport class, age category or group, the  starting order shall be determined as follows:  For events that are solely time trials:  1.  The reverse order of the most recently published general UCI Ranking;  2.  The reigning Time Trial World Champion or outgoing Time Trial World  Champion.  E0121  PARA-CYCLING  51 