Southampton Half Marathon, 10K & Junior October 2026

Join us for the Southampton Half & 10K on Sunday 4th October 2026

Take on a city race day starting and finishing by Saint Mary’s Stadium. The Southampton Half & 10K offers smooth, well-supported running on city streets with a lively stadium backdrop, perfect for chasing a PB or enjoying an autumn challenge with friends and family.

Expect clear kilometre and mile markers, friendly marshals at every key point, and an event village to round off your morning with refreshments and celebrations.

Race Distance & Start Times

Half Marathon - 9am
10K - 9:30am
Juniors - 12pm

Laps

Half Marathon - 2 laps
10k - 1 lap
Juniors - 1 lap of Saint Mary’s Stadium

Included in the entry:

Unique themed medal
Free race photos
Chip-timed results
Post-race goodies

Each kilometre is accurately marked with distance flags, and our friendly marshals will guide and cheer you all the way to the finish. We cannot wait to welcome you to Southampton Half & 10K.

With RunThrough, you can expect a friendly team of marshals to help guide you around the course and cheer you on to the finish, a lively and well-serviced event village with plenty of food and drink options, including 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.

You can now grab your Southampton Half & 10K event t-shirt for more than 30% off when you buy it as part of your entry on checkout! With the event logo printed on the chest, it’s the perfect keepsake to celebrate your race and wear your achievement with pride!

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.

Come and enjoy the day with us. Once you enter, you will receive a confirmation email. More information will be sent closer to the event. We can’t wait to see you on the start line.