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United KingdomPersonal best49.05s
Races2
Average time49.13s
Progression+0.15s
Recorded race history
400m haies
| Competition | Time | Venue | Date | Age | Place | |
|---|---|---|---|---|---|---|
| National Championships | 49.05s | Birmingham | 21 Jun 2026 | 26 | 1 | View racearrow_forward |
| National Meeting | 49.20s | Birmingham | 03 Aug 2025 | 25 | 2 | View racearrow_forward |
fingerprint
Race signature
Average intervals computed over 2 races
D-H15.93sL
H1-H23.76sL
H2-H33.85sL
H3-H43.92sL
H4-H54.05sL
H5-H64.22sL
H6-H74.42sR
H7-H84.47sL
H8-H94.72sL
H9-H104.64sL
H10-Arr.5.17s
target
Sector records
The best theoretical time, built by summing the fastest intervals.
Theoretical potential48.19s
Personal best49.05s
Margin+0.86s
D-H15.92s
H1-H23.73s
H2-H33.77s
H3-H43.77s
H4-H53.89s
H5-H64.13s
H6-H74.37s
H7-H84.40s
H8-H94.67s
H9-H104.57s
H10-Arr.4.97s
About Alastair Chalmers
Alastair Chalmers (26 years old, United Kingdom) is an athlete who specialises in the 400 metres hurdles, born on 31 March 2000.
With a personal best of 49.05 seconds, Alastair has run 2 analysed races on 4h/world, improving by 0.15 seconds since their first recorded race.
Their preferred race plan is a 13-stride start up to hurdle 6, 14 strides up to hurdle 8, then a 15-stride finish.
Based on their best recorded intervals, Alastair's theoretical potential is estimated at 48.19 seconds, a 0.86-second margin over their current personal best.