Challenge yourself on one of Britain's most breathtakingly scenic half marathon courses at the Keswick Half Marathon on Sunday, September 20, 2026, a classic Lake District race that loops around the stunning shores of Derwentwater with a memorable foray into the picturesque Newlands Valley. Starting and finishing in Portinscale, this legendary route delivers awe-inspiring, elevated views of the fells and water that will take your breath away, offering a truly rewarding and demanding 13.1-mile journey through the heart of the national park. Organized passionately by Keswick Rugby Club to fund vital grassroots sports for the local community, the event is renowned for its incredible, enthusiastic volunteer marshals whose unwavering support creates a uniquely warm and encouraging atmosphere from start to finish. With new chip timing for 2026 ensuring professional results, this popular fixture combines a serious, hilly challenge with a profound sense of community spirit, making it a must-do for runners seeking an authentic and memorable Lake District experience. Your participation directly supports youth rugby and local sports, adding a powerful sense of purpose to every step. Secure your entry for a September Sunday where the spectacular landscape provides the ultimate motivation, and the finish line at the rugby club marks a proud achievement for both you and the community.
Races Offered
Half Marathon
Sep 20, 2026
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Distance —
21.1K
terrain
Type ——
timer
11:00
Weather History
These values represent the 3-year monthly averages for September in Keswick.
thermostatTemperature
10.9° / 16.3°
wb_sunnyFeels like
8.4° / 14.1°
light_mode
Avg sunshine hours
7h 26m
water_drop
Avg rainfall
6.7 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
14.3 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (3.5)
humidity_mid
Humidity
87.5%
wb_twilight
Sunrise
06:46
nightlight
Sunset
19:27
About Keswick
Learn more about the host city, Keswick.
Keswick is the northern tourist hub of the Lake District National Park and is a favourite base for serious walkers and climbers, artists and photographers, and anyone who enjoys mountain and lake scenery. A thriving town of individual shops, including many selling outdoor equipment, art galleries, delis, cafes, restaurants and pubs, Keswick is a great place to collapse at the end of a long walk and eat a hearty meal. It also has many attractions to occupy visitors on a rainy day when heading up into the hills is not the thing to do.