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Thames Trot Ultra

23-Oct-2021 Iffley, Oxford, Oxfordshire, UK (England)


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Trail Race Race Terrain
77KM / 48Miles
1 Day - 400 Runners

DIFFICULTY Race Difficulty Intermediate  

Entry From £57 GBP

The Thames Trot  is a 48 mile point to point ultra marathon running from Iffley, Oxfordshire to Henley on Thames.  A tough run along England’s largest river with ever changing scenery, beautiful houses and traditional rowing clubs.

This is a great event with everything from tarmac paths to muddy trails. We use the Thames Path and Ridgeway National Trails – don’t forget the words “National Trail” and not just read “Thames Path”!

This is an Ultra distance course that will always keep you interested and challenged.  A great end the Ultra Running season.

The start is approximately 3 miles south of Oxford. From the Hotel there is a short run down to Iffley lock and after crossing the river the route takes the towpath through the picturesque towns and villages  to Henley.  The finish is next to the railway station which provides easy access to mainline services back to Oxford.


Event Organiser
Simon Hollis



Elevation: Very little change < 500 metres. Benign running terrain, not technical.

Suitable for: First ultra runners completing a marathon or doing regular long distance running in the last six months.


Elevation: Increase of up to 1000 metres

Suitable for: Runners who have completed at least one ultra distance race (or similar event) or are doing long distance running (>26 miles) regularly, with elevation shown.


Elevation: Increase of up to 1500 metres

Suitable for: Runners who have completed several ultra distances or similar events, or are doing long distance running regularly, with elevation shown.


Elevation: Increase of up to 2000 metres with some challenging climatic conditions (e.g. ice, snow, humidity or heat) and or technical terrain

Suitable for: Experienced runners who have completed at least regular ultra distances in last 12 months, or are doing regular long distance running (>50 miles) with elevation and conditions shown (where possible). Admission to these races may be subject to evidence of recent qualifying race participation and recent medical examination certificate. Check with the race organiser regarding entry requirements.


Elevation: Increase of up to 2000 metres with very challenging climatic conditions (e.g. ice, snow, humidity, heat or at high altitude) and or technical terrain.

Suitable for: Very experienced long distance ultra runners (min 3 years’ experience) or are doing regular long distance running (>50 miles) with elevation and conditions shown (where possible). Admission to these races is often subject to evidence of recent qualifying race participation and recent medical examination certificate. Purchase of specialist kit is often recommended for these races.

Endurance - Multi-activity

Type: An ultra distance race including at least two of the following activities such as running, swimming, cycling, kayaking, skiing and climbing. It may also include different climatic conditions (eg ice, snow, humidity, cold water, mud or heat).

Suitable for: Experienced multi-skilled athletes who have trained for the different activities included in this event. Admission to these races may be subject to receipt of a recent medical examination certificate. Check with the race organiser regarding entry requirements and any specialist equipment required such as a wetsuit, skis or a mountain bike.

Global - Virtual

Type: A virtual race which can be run at any time shown on the dates shown, on any type of terrain in any country.

Suitable for: For runners from beginners to experienced as you choose your own course and challenge based on the guidelines and options set by the virtual race organiser.

Review Thames Trot Ultra

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07:16 03-11-19

Ran this in Oct when it was wet, windy and muddy. The organisation is great but you need to make sure you pay attention to signs to follow the signs for the path which can sometime take a turn away from the river.
The cake at all checkpoints is definitely worth it - Savoury options at all checkpoints would have been ideal.

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10:08 26-11-18

My second ultra - basically flat course but nice scenery, great organisation and excellent aid stations. Try the cake! Great day out!

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09:34 11-06-18

Ran this in Feb and it was brutal underfoot due to the rain. Deep claw trails needed. The support, marshals and the organisation was fabulous however. It’s the first time someone has taken my bottles and filled them for me whilst I grabbed a quick reload on food. Would definitely recommend

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02:46 01-05-17

Despite yet another DNF for me (pulled out with a twitchy hamstring just before Goring) this event gets better and better. The support you get on the run is excellent, plenty of food and drink so no need to load up like a camel, help when you need it (like I did) and really good organisation. I will be back to have yet another go one day.

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03:02 08-03-17

Great event. Ticked all the boxes in terns of organisation, well stoked aid stations, clear route markings. Great season opener for me. Crazy weather but thats no ones fault and just adds to the fun;) Would do it again.

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06:06 15-02-17

Good organisation although some of the cut off times didn't seem that well spaced out or maybe that was just me! It's a good one for navigation as you stick close to the Thames although sometimes not as obvious as you'd think so watch it. The second half I found better as there was more track, the first being a bit of a mud bath and you're always cautious of your footing. Thankfully the weather was glorious, in the driving rain it would me a mare but then again what wouldn't ? Good cake and gel supplies and they help you fill your bottles which is always gratefully received when you're knackered. A bit more savoury / salty food would have been nice.

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06:34 03-01-17

The 2016 edition was my first ultramarathon. Conditions were pretty poor underfoot for the first 10 miles (thick, ankle-twisting mud) but my memories of the day are of seeing the km click by on the watch and thinking 'am I really doing this'. The grey clouds, headwinds, rolling swell on the thames, wide open spaces and often being alone added up to quite a zen experience. I got hauled off the course after missing the last checkpoint cut off by 3 minutes. The lack of flexibility at this point was disappointing considering the conditions we'd run in. One disappointment is the fact that the organisers couldn't be arsed producing a final results list - so people who quite after 10km appeared before those who were stopped at the final checkpoint. That's kind of slack.

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11:51 10-11-16

This was my first ever ultra event in 2012 and my first DNF. What I remember about the day is that the temperature didn't seem to get above freezing and once I got to Reading I had to stop because of the snow as I had got too cold. It's an excellent route with brilliant support and I am booked to have another go in 2017.

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08:08 29-02-16

ThamesTrot was my 3rd ultra and I was thinking this "flat" race as a training for my first 100 mile (Autumn100) But conditions were really tough. Most of the course was mud and this was sometimes harder than sharp hills. Conditions got harder and harder after 20 mile. Rain and wind made it tough for all runners I think. I finished just 11 minutes before cut-off but very proud of myself at the end. It was a great race and very good experience.

Race HQ and organisation was excellent. CPs were good and well placed. I can't eat much during the ultra races and the best drink for my stomach is coke (Never drink coke normally) I think if organization puts fizzy drinks to the last CPs it would be nice. Hope to be running this race in future again

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02:27 23-02-16

Thames Trot was my first ultra 3 years ago when the course was flooded and we had to run a different route. I enjoyed it then and looked forward to coming back in 2016 and running the 'proper' course. What I wasn't prepared for was the mud ! I have never experienced mud like it and I will remember this race as one of the most difficult ones I'e done - purely because of the conditions (and wrong choice of shoes!). But this does not take anything away from the sterling work that the RD, marshalls and helpers did on the day. The organisation was first class, the race HQ venue was excellent, the fruit cake was to die for and the hot chocolate at the end was perfect! Beyond Ultra are a great bunch of people who organise great races (and I've done a few of them). The Thames Trot is the perfect race for those wanting to step up to the Ultra distance. Just make sure you avoid the mud !

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