Hillingdon Cycle Circuit hosts regular time trial events organized by Westerley Cycling Club, offering cyclists two distinct categories: Time Trial Bike and Road Bike races. Both events take place on an exclusive car-free outdoor circuit that spans 10.35 miles (equivalent to 11 laps). For the Time Trial Bike event, participants are encouraged to use advanced equipment such as time trial or triathlon bikes, full aero helmets, deep section wheels including disc wheels, and other aerodynamic gear. This race is designed for those looking to push their limits in terms of speed and efficiency. Entry fees range from £10.00 for adults to £5.00 each for Westerley CC members and juniors. The Road Bike event caters to cyclists who prefer a more traditional setup, allowing the use of mountain bikes or road bikes but strictly prohibiting any aerodynamic equipment such as clip-on bars, time trial/triathlon bars, pointy aero helmets, or wheels deeper than 60mm. This ensures fair competition and maintains safety standards for all participants. The entry fee remains consistent at £10.00 for adults, with discounts available to Westerley CC members and juniors. Both events adhere strictly to non-drafting rules, emphasizing the importance of individual performance without relying on others' momentum. Cyclists are responsible for tracking their own laps throughout the race, which totals 11 laps or approximately 10.35 miles. All participants must familiarize themselves with current Cycling Time Trials guidance to ensure a safe and enjoyable experience at Hillingdon Cycle Circuit. These races provide an excellent opportunity for cyclists of all levels to challenge themselves in a controlled environment that prioritizes both performance and safety.
Races Offered
Junior Road Bike
Aug 12, 2026
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Distance —
0K
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Cycling
timer
19:00
Junior Time Trial
Aug 12, 2026
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Distance —
0K
terrain
Type —
Cycling
timer
19:00
Road Bike Only
Aug 12, 2026
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Distance —
0K
terrain
Type —
Cycling
timer
19:00
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£5.00
Time Trial
Aug 12, 2026
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Distance —
0K
terrain
Type —
Cycling
timer
19:00
sell
£5.00
Weather History
These values represent the 3-year monthly averages for August in Hillingdon.
thermostatTemperature
13.3° / 22.3°
wb_sunnyFeels like
11.9° / 20.2°
light_mode
Avg sunshine hours
10h 0m
water_drop
Avg rainfall
1.6 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
12.6 km/h (Gentle breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (4.9)
humidity_mid
Humidity
72.0%
wb_twilight
Sunrise
05:49
nightlight
Sunset
20:21
About Hillingdon
Learn more about the host city, Hillingdon.
Hillingdon is an area of Uxbridge within the London Borough of Hillingdon, centred 14.2 miles (22.8 km) west of Charing Cross. It was an ancient parish in Middlesex that included the market town of Uxbridge. During the 1920s the civil parish bore a rapid, planned increase in population and housing, and was absorbed by Uxbridge Urban District in 1929. It has formed part of Greater London since 1965.
