Sienna Colosi

AustraliaAustraliaActive
Born
Feb 24, 2009 (17 years old)
Events
Mile · 3000 m

Sienna Colosi is a Australia middle-distance runner, born on February 24, 2009. She competes primarily in the 1500m, Mile and 3000m.

Her personal bests include 4:40.45 in the 1500m, 4:55.54 in the Mile, 9:55.59 in the 3000m and 6:34.49 in the 2000m. She is currently active on the international athletics circuit, representing Australia.

Personal best · Mile4:55.54
2026 season best5:03.76Feb 28, 2026
2026 season best
Personal best · 3000 m9:55.59
Last competitionNSW Milers SeriesOct 22, 2026 · 5:00.04
NSW Milers Series

As of Nov 14, 2026: Mile 4:55.54, 3000 m 9:55.59, 2026 season best 5:03.76 (Feb 28, 2026) · Last competition: NSW Milers Series, Oct 22, 2026, 5:00.04 · 17 years old

Personal bests

WA points calculator →
DisciplineResultAll-time2026
1500mSydney 2023Australia 1500 m all-time list4:40.45903 pts––
MileSydney 2024Australia Mile all-time list4:55.54943 pts–#644
3000mAdelaide 2024Australia 3000 m all-time list9:55.59928 pts––
2000mSydney 20236:34.49855 pts––

Progression

SeasonDisciplineResultWindDateCompetitions
20261500m 4:44.99–Apr 18, 2026Australian U18 Championships
2026Mile 5:03.76–Feb 28, 2026Illawarra Track Challenge
20263000m 10:34.93–Apr 15, 2026Australian U18 Championships
20251500m 4:48.60–Apr 7, 2025Australian U17 Championships, WA Athletics Stadium, Perth
2025Mile 5:14.21–Feb 20, 2025Albie Thomas Mile, The Crest Athletics Centre, Bankstown, Sydney
20253000m 10:10.96–Apr 8, 2025Australian U17 Championships, WA Athletics Stadium, Perth
20241500m 4:44.57–Mar 9, 2024NSW Junior Championships, SOPAC, Sydney
2024Mile 4:55.54–Mar 28, 2024Albie Thomas Mile
FAQ

Frequently asked questions

Sienna Colosi's Mile personal best is 4:55.54, set on Mar 28, 2024 in The Crest Athletics Centre, Bankstown, Sydney (AUS).

Sienna Colosi competes in the Mile and 3000 m.

2026 season best: 5:03.76, set on Feb 28, 2026. Last competition: NSW Milers Series on Oct 22, 2026, 5:00.04.