What sprint hurdle heights and distances apply to each age group?

From the Athletics Australia able-bodied technical specifications (sprint hurdles updated 1 August 2019, in the 1 May 2025 document). Distance to first hurdle / between hurdles in brackets.

Men

• Under 20: 110m, 10 x 0.991m (13.72m / 9.14m)
• Under 18 and Under 17: 110m, 10 x 0.914m (13.72m / 9.14m)
• Under 16 and Under 15: 100m, 10 x 0.838m (13.00m / 8.50m)
• Under 14 and Under 13: 90m, 9 x 0.762m (13.00m / 8.00m)

Women

• Under 20: 100m, 10 x 0.838m (13.00m / 8.50m)
• Under 18 and Under 17: 100m, 10 x 0.762m (13.00m / 8.50m)
• Under 16 and Under 15: 90m, 9 x 0.762m (13.00m / 8.00m)
• Under 14 and Under 13: 80m, 9 x 0.762m (12.00m / 7.00m)

Short track (60m), 5 hurdles: men Under 20 0.991m, Under 18 and 17 0.914m; women Under 20 0.838m, Under 18 and 17 0.762m. Distance to first hurdle is 13.72m (men) or 13.00m (women), and between hurdles 9.14m (men) or 8.50m (women).

Source: https://www.athletics.com.au/wp-content/uploads/2024/12/AA-Technical-Specifications-2025-05.pdf