Nestled along England's majestic River Thames, the Iffley to Henley Ultra Marathon offers runners an unforgettable journey through picturesque landscapes and historic settings. Spanning 47 miles from Hawkwell House Hotel in Oxfordshire’s charming village of Iffley to Mill Meadows Park in Henley-on-Thames, this point-to-point race is a celebration of endurance and beauty. The course begins just south of the bustling city of Oxford, running along tranquil paths that wind through quaint villages and towns. As runners follow the Thames Path and Ridgeway National Trails, they will encounter varied terrain ranging from smooth tarmac to muddy trails, ensuring both challenge and engagement throughout the entire distance. The route passes by traditional rowing clubs and historic houses, offering glimpses into England’s rich cultural heritage. Participants can expect a mix of flat stretches alongside the river and more challenging sections with elevation changes along the National Trails. This diverse landscape keeps runners engaged and provides stunning views at every turn. The event concludes in Henley-on-Thames, where runners finish next to the railway station for easy access back to Oxford via mainline services. The race is proud to be an Ultra-Trail du Mont-Blanc index race, further elevating its status among ultra-distance events globally. Runners can park at street locations near Iffley or make use of a courtesy shuttle bus from Oxford train station if arriving by rail. For those driving, there are limited parking spots available in the vicinity and runners should purchase return tickets for convenient travel home on race day. With detailed route guidance provided through digital means such as Ridewithgps.com app, participants can focus fully on their run while enjoying every mile of this historic journey along England’s largest river. For a comprehensive view of the course layout, interested athletes are encouraged to review the online map and tracker details sent via email prior to race day. This ensures that each runner is well-prepared for an unforgettable ultra marathon experience.
Races Offered
Single Entrant
Oct 24, 2026
straighten
Distance —
75.6K
terrain
Type —
Running
timer
08:15
sell
£80.40
Weather History
These values represent the 3-year monthly averages for October in Oxfordshire.
thermostatTemperature
8.7° / 14.9°
wb_sunnyFeels like
5.7° / 12.1°
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Avg sunshine hours
5h 40m
water_drop
Avg rainfall
2.9 mm
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Avg snowfall
—
air
Avg wind speed
14.0 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.8)
humidity_mid
Humidity
84.8%
wb_twilight
Sunrise
07:31
nightlight
Sunset
18:09
About Oxfordshire
Learn more about the host city, Oxfordshire.
Oxfordshire is a county in South East England, on the southern fringes of the West Midlands, bordered by Northamptonshire, Buckinghamshire, Berkshire, Wiltshire, Gloucestershire and Warwickshire. Straddling the upper reaches of the Thames River valley west of the Chilterns, Oxfordshire is home to the ancient university city of Oxford and vast areas of archetypal English landscape, studded with fascinating towns and villages, many along the River Thames.