Race start/finish: Berkshire County Sports Club, Sonning Ln, Sonning, Reading RG4 6ST. 

Please approach via Sonning (Charvil Lane, Pound Lane, Pearson Road) to allow your fellow runners to cross the road shortly after the start.


Parking at the start/finish:  On-site free parking.  Cars must be removed from site the same day - no overnight stay


Registration will be at the start/finish venue from 6:15-7:30am


Entries on the day - we can take entries on the day

Baggage Drop - please leave bags in your car, which will be a short walk away from the start line.  For those not driving we will provide a space for you to leave a bag, however this is not secure therefore please do not leave valuables



There will be a staggered start between 7:00am – 8:00am.  Times will be pre-allocated.

Groups of runners will be started off at intervals. You can choose your approximate start time when registering and your exact start time will be confirmed before race day.  Full details in the RUNNERS RACE GUIDE on the Race Information page




The 50k is a 1-lap course and it is a varied, multi-terrain course around Reading, consisting of approximately 80% trial and 20% road surface. The course includes flat river & canal towpaths, undulating woodland trails, country lanes and cuts through Reading’s many urban green spaces. The terrain should be mainly firm underfoot, but can also be wet & slippery in places if we have a lot of rain beforehand. 

It is your responsibility to stay distanced, according to the current government guidelines, from other runners and other users of the paths & trails at all times




There are five checkpoints/feedstations on the course. It is mandatory to visit each checkpoint even if you don't require food/water. You may also have your own personal nutrition delivered ahead of your arrival to checkpoints 3, 4 & 5, which can be dropped in the box at the start - this is a FREE service. Full details in the RUNNERS RACE GUIDE on the Race Information page



Yellow/black arrows & red/white tape for the whole course.  In addition there are small orange RRUM stickers on lamposts as back-up. You will be sent the final GPS file for the route in the week before race day – make sure you use this final version as changes could be made. There will be a google map version of the route made available, showing checkpoints and any public toilets along the route



The cut-off time is 10hrs from the earliest start time of 7am and 9hrs from the latest start time at 8am.  If you start earlier, you get more time!  Each checkpoint will have it's own cut-off time and you will be required to retire if you fall behind this time.  For individual checkpoint cut-off times please see the RUNNERS RACE GUIDE on the Race Information page

The cut off time for the finish is 5pm, therefore  9hrs (from 8am) 10hrs (from 7am)



​There will be toilets at the start, finish & Checkpoint 2 (19k). There will be various toilets at points along the course

If you have any concerns not addressed please email us at info@ultravioletrun.co.uk