Nepean Tri - 2026 | Castlereagh, NSW, Australia

About the Event

Experience the timeless allure of the Nepean Triathlon, set for November 22, 2026. As one of Australia's most storied events, this triathlon promises an unforgettable journey through rich history and stunning landscapes.
The race begins with a breathtaking swim in the picturesque waters of Lake Burragorang, followed by a challenging bike ride along the scenic Nepean River Valley. The course then transitions to a rugged yet rewarding run through the historic towns that line the riverbanks. Participants will be treated to panoramic views and a sense of adventure as they navigate this unique terrain.
While you're here, don't miss out on the broader Redline Games festivities taking place over the weekend. Whether your goal is to conquer the full triathlon or try one of the other distances offered, Nepean Tri offers something for every athlete looking to challenge themselves in a beautiful setting.
Mark your calendars and join us as we celebrate the enduring legacy of this iconic event. #BEAPARTOFHISTORY

Races Offered

Aquabike Classic - Team Member Closed

Nov 22, 2026

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Distance — Aquabike Classic - Team Member Closed

terrain

Type — Multisports

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06:45

Block pricing

Nov 22, 2026

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Distance — Block pricing

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Type — Multisports

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06:45

sell

A$232.00

Classic - Team Member Closed

Nov 22, 2026

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Distance — Classic - Team Member Closed

terrain

Type — Multisports

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06:45

Nepean Tri - Team Member Closed

Nov 22, 2026

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Distance — Nepean Tri - Team Member Closed

terrain

Type — Multisports

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06:45

Sprint - Team Member Closed

Nov 22, 2026

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Distance — Sprint - Team Member Closed

terrain

Type — Multisports

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06:45

Super Sprint - Team Member Closed

Nov 22, 2026

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Distance — Super Sprint - Team Member Closed

terrain

Type — Multisports

timer

06:45

Try A TRI - Individual Opening soon

Nov 22, 2026

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Distance — Try A TRI - Individual Opening soon

terrain

Type — Multisports

timer

06:45

sell

A$49.95

Weather History

These values represent the 3-year monthly averages for November in Castlereagh.

thermostat Temperature

15.4° / 27.6°

wb_sunny Feels like

15.4° / 26.7°

light_mode Avg sunshine hours

10h 12m

water_drop Avg rainfall

2.9 mm

ac_unit Avg snowfall

—

air Avg wind speed

7.4 km/h (Light breeze)

opacity Sweat loss rate

High

terrain Course conditions

Hard and dry surface

sunny Max UV Index

Low (2.0)

humidity_mid Humidity

68.5%

wb_twilight Sunrise

04:46

nightlight Sunset

18:37

About Castlereagh

Learn more about the host city, Castlereagh.

Castlereagh is a suburb of Sydney, in the state of New South Wales, Australia. Castlereagh is 67 kilometres (42 mi) north-west of the Sydney central business district, in the local government area of the City of Penrith and is part of the Greater Western Sydney region.