2, 4, 6, 8, 10 and 12 years

Difficulty : 1

yardage : 150 cm wide:
0m75 for 2 years,
0m90 for 4 years,
1m for 6 years,
1m10 for 8 years,
1m20 for 10 years,
1m30 for 12 years.