Join Phoenix Running South Wales for the festive fun of our Christmas Jumper Run on Saturday, December 5th, 2026 at Parc Taf Bargoed in Trelewis. This year, we're embracing the holiday spirit early by inviting participants to run or walk through this picturesque park while wearing a specially designed long-sleeved running top emblazoned with Christmas cheer. The event offers runners and walkers alike an opportunity to explore the 5.3km out-and-back course at their own pace, from a single lap to multiple laps over seven hours. The terrain is entirely tarmac, making it accessible for all levels of fitness while offering stunning views shaped by both industrial heritage and modern revitalization. Participants will receive a unique long-sleeved running top made exclusively by REdbEAR Sports, typically retailing between £28 - £35, as a thank you for joining us. Additionally, Phoenix Runners can enjoy an exclusive discount code at the REdbEAR online shop through event emails. The course features a gentle elevation profile of 63 meters gain and loss per lap, winding through Parc Taf Bargoed's scenic landscapes. This flexible format allows runners to start whenever they arrive between 8:30am and registration opening at 7:30am, making it easy for everyone to participate without feeling rushed or pressured. Whether you're aiming to complete a single loop or pushing yourself to see how far you can go in the seven-hour window, every finisher will receive a bespoke medal. This event is not just about setting personal bests but celebrating the joy of running and community spirit during the holiday season. Experience the festive atmosphere at Parc Taf Bargoed on this special day as we welcome runners from all walks of life to come together in a unique blend of exercise, fun, and charity. Don't miss out—spaces are limited, so secure your spot early for an unforgettable run surrounded by holiday cheer. For any specific start time requests or further information, feel free to contact the organizers directly. We look forward to seeing you there!
Races Offered
Affiliated
Dec 05, 2026
straighten
Distance —
Affiliated
terrain
Type —
Running
timer
07:30
sell
£33.00
No Jumper - Affiliated
Dec 05, 2026
straighten
Distance —
No Jumper - Affiliated
terrain
Type —
Running
timer
07:30
sell
£20.00
No Jumper - Unattached
Dec 05, 2026
straighten
Distance —
No Jumper - Unattached
terrain
Type —
Running
timer
07:30
sell
£22.00
Unattached
Dec 05, 2026
straighten
Distance —
Unattached
terrain
Type —
Running
timer
07:30
sell
£35.00
Weather History
These values represent the 3-year monthly averages for December in Treharris.
thermostatTemperature
4.6° / 8.2°
wb_sunnyFeels like
-0.5° / 3.9°
light_mode
Avg sunshine hours
2h 41m
water_drop
Avg rainfall
7.4 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
19.2 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (1.4)
humidity_mid
Humidity
90.7%
wb_twilight
Sunrise
09:11
nightlight
Sunset
17:05
About Treharris
Learn more about the host city, Treharris.
Treharris is a town and community in the Taff Bargoed Valley in the south of Merthyr Tydfil County Borough, South Wales. It is located about 0.6 miles (1.0 km) west of Trelewis, from which it is separated by the Taff Bargoed river, and 0.9 miles (1.4 km) from Nelson in Caerphilly county borough and has a population of 6,356 from the 2011 Census. As a community, Treharris includes the villages of Quakers Yard and Edwardsville. Due to steepness and narrowness of both the Taff and Taff Bargoed valleys at Treharris several notable bridges and viaducts have been built in the area.
