The race is identical to the Winter 100, with a simple name change. We felt it a more appropriate title for the race, when we relocated it in the fixture list from the last weekend of November, to the middle of October. It was known as the Winter 100 in 2012, 13 and 14, changing to the Autumn 100 in 2015 and 2016.
The course is 100 miles in length and has only 3840 feet of gain. In terms of terrain, roughly 80% of the course is on trail and around 20% on the road. The trail varies between open grassland, woodland single/ double track, crushed gravel/ dirt road, farmers fields and paved roads. During dry periods the course is flat, fast and runnable. Both the Thames Path and Ridgeway trails can however become much more difficult to negotiate in the wet. If the temperatures are low but above freezing and the course receives a lot of rain, the ground underfoot will become muddy, waterlogged and slippery and potentially even flooded, icy or covered in snow, resulting in much slower conditions. It is possible that the temperatures may drop below freezing before or during the race and that snow may be a factor making it extremely tough going. You must prepare for conditions to be very difficult and very cold. The wind speeds on the Ridgeway section to Chain Hill and return can also be extremely high.
Principally you get a fully supported race weekend including:
16 fully stocked aid stations
Full Medical Support in the form of dedicated race ambulances and roving vehicles as well as static first aid teams
Live timings throughout race weekend for friends and family to follow you online
The race will be limited to the first 300 entrants. There will be no entries on the day.
You may enter the race without first having qualified. In order to start the event however, you must have completed a minimum of a 50 mile distance non-stop race since January 1st 2014 and before race date. As organisers, we reserve the right to refuse anybody entry into who does not meet the qualification standard. This is for runners own safety.
Click here to read more about what counts as a qualifier.
There will be a live webcast during the event. Live times will be published as runners come through major aid stations. A link to the live site will appear on the homepage in the week leading up to the race.
Yes. There are sections of the course where you will be running along single lane carriage ways or crossing busier B roads. The trail does appear at busy junctions, at some points abruptly and therefore you must be alert at all times. Runners pass along the course entirely at their own risk. Much of the course is on private land and as a result there are gates and stiles to negotiate. All gates must be closed properly after you make your way through.
A full aid station list is available here.
There will be 16 aid stations including the finish.
The race start/ finish and HQ is at Goring Village Hall, High Street, Goring-on-Thames, Oxfordshire, RG8 9AG. You can find details of how to get there and away as well as details on parking under the Travel and Accom tab.
Start: Toilets, Water, Indoor/ covered area, Pop-Up Centurion Running Store.
Finish: Toilets, Water, Indoor/ covered area, Hot Food and Drinks.
There are NO sleeping facilities at the start or finish.
You must register within the times listed on the Schedule page. Your race number will not be posted to you before race day, you must collect if from registration. Start times are also on the schedule page.
Pacers are permitted from Mile 50. Pacers may join a runner only at Mile 50 or Mile 75 and must cover either 25 or 50 miles (Leg Three and/ or Leg Four) with their runner. Pacer handovers are not permitted anywhere other than HQ at Goring.
Crews are not permitted at this race due to the size of the aid station locations and pressure on the local community.
You can access drop bags each time you return to Goring at mile 25, 50, 75 and at the finish.
The majority of the course is on trail. Trail shoes are advised especially given the time of year. There are sections of trail which can become very muddy or flooded in wet conditions.
There are many options regards kit for fulfilling these requirements and those of other events. We stock what we believe to be the best options at our online store available by clicking here under the Mandatory Gear Section. Please ask us if you have any questions.
Strongly recommended but not mandatory:
Carrying a map is not mandatory but it is strongly recommended. We recommend the Harveys Maps which are concise, easy to read and waterproof. Ridgeway and Thames Path Required and available, discounted, here.
There will be toilets at the start, finish and every 25 miles on course. There are also toilets at Wallingford, North Stoke, Whitchurch and Reading aid stations. At certain points the route runs close to and even right past pubs or cafes where you may be able to use the facilities but that is not a guarantee. If you need to answer a call of nature whilst on the route you must make sure you are as far off of the marked trails as you can go.
No. The hall we use for HQ is small and constantly extremely busy with the coming and going of runners and volunteers. We advise all runners to book accommodation in Goring or Streatley for the night before and after the race. Do not attempt to drive home directly from the finish without sleep. Driving when fatigued from a 100 mile run has led in the past, to fatal accidents.
All finishers will receive a Centurion 100 mile finishers belt buckle. Finishers in under 24 hours will receive a special '100 miles - One Day' Buckle, finishers between 24 and 28 hours will receive '100 mile Finisher' buckles. Male and Female winners of each distance will also be awarded additional prizes. Those finishing the Grand Slam will be given special awards on completion of the race.
If you have to drop please do so only at an aid station and preferably at Goring. Please inform the aid station captain on arrival that you intend to drop and whether you need assistance. If you drop at an aid station which is not Goring, the Aid Station Captains will inform you when it is possible to get transport back to the start point. It may be that you have to wait some considerable time so please be patient with the volunteers.
All aid stations for all distances will have a full selection of the usual aid station fare and a whole lot more. At a minimum you will be able to pick up water, coke, chocolate, nuts, fruit, crisps, sandwiches, a limited number of gu energy gel packets and other sweet and savoury snacks. There will be hot drinks available at every aid station from Goring Mile 50, onwards.
Medical support is of paramount importance to us as organisers. Throughout the event there will be at least one roving medical unit and a fixed medical team on hand at Goring. Individual first aiders/ medical volunteers will also be present at some aid stations. Contact numbers for the medical team will be available at registration. They will be contactable round the clock for the duration of the race.
Withdrawals up to 4 weeks prior to race day (0600 GMT Saturday 28 days prior) are eligible for a 70% refund. Withdrawals after that time will not be refunded as all race day costs have been incurred by that stage and you will not be replaced. There are no deferals or transfers to alternative/ later events. Exception to this is ONLY ifor pregnancy and in which case you must notify us by email of your pregnancy no later than 4 weeks prior to race day to be eligible for a 100% refund. You must acknowledge that you understand and agree to this policy during the registration process.
If you do not agree with the refund policy please do not enter the event.
To withdraw please simply email to request by clicking here.
The organisers reserve the right to modify, at any time, the course or aid station locations listed on the course.
In the case of severe/ extreme weather conditions including but not limited to flooding after the event start, the organisers reserve the right to abandon the event at any time.
No refunds will be offered in that situation. If the event cannot take place for reasons out of the control of the organisers including but not limited to flooding, severe weather or denial of access to the original course (foot and mouth outbreak for example), the organisers reserve the right to postpone the event to a later date and all entries will be carried forward to the new date. Refunds will not be offered under these circumstances. If the event is cancelled for reasons which require the event to be postponed indefinitely, the organisers reserve the right to retain all entry fees against costs incurred.
The Autumn 100 is an official qualifer for UTMB. You must visit the UTMB website for full details of that event.
The race director and chief medic will be contactable at all times throughout race weekend on numbers given at registration and also on e mail at [email protected].
The national trail guides are excellent and you can purchase them easily online. They contain maps of the entire route and accurate route descriptions if you would like or are able to recce the route prior to race day.