Clapham Chasers
Thames Riverside 20
Next Race: 22/03/2026
Old Deer Park (Next to Pools on the Park), Richmond, London
Overall Rating
4.6/ 5
246 reviews
Stephen Briggs
Great event.
Pacers were excellent
Oliver Rudd
Great event
Great event-very well organised and brilliant helpful and friendly Marshalls.
A great warm up event for a spring marathon or as a stand-alone event.
Heather White
Amazing race and really well organised!
SARAH HARRIS
Fantastic local race that I'd highly recommend. Organisation and route are really great and there is homemade cake at the end!
This is a flat, fast course with pacers to help you get around.
Mannan Abbasi
Well-organised marathon training race in beautiful surroundings
Pacers were spot on. Friendly pre and post run atmosphere. Not too busy. What could be better in future? - One loop course instead of 3 laps would be ideal :)
Brian Lynch
Super event, proper club event
This is an incredible event. So friendly and supportive.
A massive shout-out to the 7:30 pacer who dropped back to pace in in for the final mile, what a rockstar!
Emma Keogh
Excellent race! Pacers and support were next level, very organised and lovely route
Steve Cole
Really enjoyed the event is was very well organised with lots of very supportive marshals shouting encouragement
Jimmy Coppin
Great event for marathon preparation!
All the marshals and pacers were lovely! And I enjoyed the 3 loop route with the vast majority of the surface being hard and smooth rather than gravel which makes the experience much closer to marathon race conditions.
Ruth Willis
Favourite 20 miler
Pacers are always so encouraging, and I always make new friends from the group around me! Small but perfectly formed
Tara Wigley
Such good vibes! Loved it!
Such a friendly atmosphere, so many Marshalls, strong recommend!! X x
Maureen Willcox
Really good event, even with the route change!
So well organised and marshalled.
Andy Wright
Great race and great scenery
It's the second time I've done this and it's always a good event. Really well organised and good support. So nice to run along the towpath and it's pretty flat. Would recommend it for club runners - good as part of spring marathon training too
Amy Harris
Well organised local race
Nicky Cole
First 20 miler - ready for London
Toby Holman
Lovely race with lovely people, club
Lauren Loxton
Well organised and great location!
Ionel Tofan
Good preparation run.
Natalie Sacre
Great local training run or race
Cathy Wood
Really well organised. Lovely volunteers. Excellent course marking and scenic route. Thank you.
Fabulous volunteers. Thank you
