Henley River Half Marathon, 10k & Junior Race September 2026

Join Us for the Henley River Half Marathon, 10K & Juniors on Saturday 5th September 2026

The Henley River Half Marathon, 10K & Juniors offers another chance to enjoy this stunning route before the season ends. With fast, undulating trails and plenty of atmosphere, it’s the perfect late-summer race.

Race alongside the Thames with support from fantastic marshals and enjoy a route designed to inspire PBs and personal achievements. As always, the course begins and ends at the iconic Temple Island Meadows.

Start Times

09:00 am - Half Marathon

09:30 am - 10k

11:30 am - Juniors (under 11)

LAPS

HM - 1 mini lap + 2 laps

10k - 1 lap

Juniors - Out and Back 

Race Terrain & Elevation

Half Marathon 

Elevation: 98m

Terrain: Mixed, undulating

10K

Elevation: 46m

Terrain: Mixed, undulating

Junior Race

Terrain: Mixed, undulating

Included in the Entry

Unique Themed Medal

Free Race Photos

Chip-timed results

Post Race Goodies

Whether it’s your first time or your return to the riverside, join us for a brilliant run and an even better atmosphere. We’ll see you in September!

With RunThrough you can expect a friendly team of marshals to help guide you round the course and cheer you on to the finish, a lively and well-serviced event village with plenty of food and drink options, and free goodies from our partners at the finish line after your hard effort.

We have been extensively researching what runners consider important, and sustainability is fast becoming the top issue. Click here to see what RunThrough is doing for sustainability.

T-Shirts at events have become a hot topic with concerns around the quality not being high enough to wear on a regular basis. We have decided to tackle this by offering a RunThrough Kit Technical T-Shirt with a retail value of £22 for £12 with the addition of the Henley River logo printed on the chest.

We can do this with our partner RT Kit as part of a strategic decision to raise awareness about the quality of the product whilst reducing the overall cost of events for those who would prefer not to have a t-shirt included.