Chobham CommonSun 22 Feb, 2026
Compass Sport Cup Qualifier Round
National level event
Explanation of Event levels
Local events are usually low key and in the 'localised' area, ideal for newcomers to try the sport. Training are non competitive events used for training and coaching, aimed at members of the club, but they can attract people from neighbouring clubs, and are often ideal for newcomers to try the sport. Regional events attract participants from around the local Region, National events are high quality competitions that will attract people from far away, Major events are Major Events such as a British Championships.
Terrain type: Woodland & Forest
Results
Overview
Chobham Common, Surrey, between junctions 2 & 3 of the M3
By kind permission of Surrey County Council and Chobham Parish Council.
NEW - FINAL DETAILS (v2b) for this event are published here (last updated 19th Feb)
The event also includes a free O-Score activity with 15 controls and a 1:750 map for the younger generation of budding orienteers - available between 10:00 and 12:15 (at Assembly).
START LIST here (issued 15:45 20/02/26)
Location Info
/-0.6154,51.3751,12/500x400?access_token=pk.eyJ1IjoicGF1bGZyb3N0IiwiYSI6ImNrb3gwYndwbDBhNjMyb3Q2cTAzajhzbjQifQ.s1B_G4dqnxOBH83Gv9EBmw)
Near: Lat,Lng: 51.3751,-0.6154 OS Grid Ref: SU965649 Postcode: SL5 0HY What3Words: ///pink.hats.text
Open an interactive map in: GoogleMaps - AppleMaps - OpenStreetMap - BingMap (OS 50k)
Directions / Parking
Parking at the Roundabout Car Park, Chobham Rd, on tarmac or adjacent overflow area on level field. Assembly/Download is adjacent to the car park, with space for some club tents.
15 mins walk (0.7 miles) from Assembly to Start, 15 mins walk (0.7 miles) from Finish to Assembly. It is 7 mins walk (0.3 miles) between Finish and Start.
Car Sharing / Public Transport
Competitors are urged to consider sharing cars or using public transport as the parking is limited:
- Sunningdale Station (Waterloo - Reading line, 2 trains / hour on Sundays), 1.8 miles / 40 mins walk to Assembly. No short cut to Start!
- Longcross Station (Waterloo - Reading line, 1 train / hour on Sundays), 1.2 miles / 26 mins walk to Assembly. Route direct to Start (avoiding competition area) 1.5 miles / 35 mins walk
Map / Terrain
1:10000 / 1:7500 with 5m contours updated 2025 by Tom Edelsten
Last used for an open event in 2019, this National Nature Reserve has been described as “amongst the finest remaining examples of lowland heath in the world”. The competition terrain, south of the M3, provides extensive undulating open and semi-open sandy heathland, mainly runnable with some rougher sections, a significant path network, marshy areas and smaller parts of runnable forest offering a variety of challenges for all classes. However, following the recent rain, there are many extra marshes and waterlogged areas - even some of the paths are very watery!
A previous map of the area, as used for an event in 2019, can be viewed on Routegadget
Blank maps: 1:10k and 1:7.5k will be available to inspect at Enquiries (and also at the Start)
Course Information
Cup / Trophy Courses – closed entry for BOF members of competing clubs only (Cup: SO, SLOW, SN, BKO; Trophy: LOK, SAX, GO, MV, BADO).
CompassSport Cup Competition Rule U (Jan 2026)
Note that the course/age-class structure has changed since the 2025 CSC competition.
Course lengths and controls were updated on 16th Feb 2026.
| Course | Age Classes | Colour | Distance | Climb | Controls | Scale |
| 1 | Open | Short Brown | 8.8 km | 140m | 34 | 1:10k |
| 2 | M18- M45+ | Blue | 6.7 km | 100m | 23 | 1:10k |
| 3 | Women Open | Blue | 6.4 km | 120m | 24 | 1:10k |
| 4 | M55+ | Short Blue | 5.7 km | 75m | 24 | 1:10k |
| 5 | W18- W45+ | Green | 4.8 km | 80m | 17 | 1:10k |
| 6 | M65+ | Green | 4.6 km | 70m | 21 | 1:7.5k |
| 7 | M75+ W60+ | Short Green | 3.7 km | 50m | 17 | 1:7.5k |
| 8 | M80+ W70+ | Very Short Green | 3.5 km | 50m | 16 | 1:7.5k |
| 9M | M18- | Light Green | 5.0 km | 75m | 21 | 1:7.5k |
| 9W | W18- | Light Green | 5.0 km | 75m | 21 | 1:7.5k |
| 10M | M14- | Orange | 3.1 km | 45m | 16 | 1:7.5k |
| 10W | W14- | Orange | 3.1 km | 45m | 16 | 1:7.5k |
Course 1 has 34 Controls - check that your dibber has sufficient capacity. Older dibbers with numbers in the range 1 - 499,999 and 2,000,001 - 2,999,999 cannot hold full data for more than 30 controls. If hiring a dibber for this course you should hire a SIAC.
Non Cup/Trophy
| Course | Age Classes | Colour | Distance | Climb | Controls | Scale |
| 11 | any age | Light Green | 3.8 km | 65m | 18 | 1:7.5k |
Anyone competing in the CSC can only shadow someone on Course 11 after they have completed their own course. Shadowing is not allowed on CSC Courses (1 - 10) - Rule U, section 4.1.3.
In case you're wondering whether to risk EOD, we still have 14 maps available - send an email to the Organiser (see under Contacts) to reserve one!
Entry Details
Entry via your Club Captain. Course 11 (non Cup/Trophy) will also have limited EOD subject to map availability.
BOF members: Juniors (under 21) £7, Full time students or Young Adults (21-25) £12, Seniors (26+) £16
SI Dibber hire £1 / SIAC Dibber hire £2
Course 11 only: Non members of BOF: +£1 for Juniors +£2 for over 21s
Registration and Start times
Start window is 10:00 – 13:00 (10:00 - 12:00 for under 16s and for course 11). Courses will close at 15:00.
Punching Start with pre-allocated start times for courses 1-10.
Start anytime between 10:00 - 12:00 for course 11.
Facilities
Portaloos at assembly, Catering provided by Tom’s Wagon, O-Score activity for the younger generation, Professional First Aid cover
Dog restrictions
Allowed in/around Car Park on a lead but not accompanying competitors
Contacts / Officials
Organiser - Frederick Smith, GO: cscorganiser (at) guildfordorienteers.co.uk
Planners - Richard Collyer & John Collyer, GO
Controller - Steve McKinley, SN
Nearest A&E Hospital
St Peter's Hospital Chertsey KT16 0PZ / Frimley Park Hospital GU16 7UJSafety Notes
- A professional first aid service will be provided by Event Medic Services at Assembly.
- Competitors are permitted to carry a mobile phone for use in an emergency and children or vulnerable adults are encouraged to do so.
- There will be an emergency phone number printed on the map.
- Chobham Common is much wetter than normal - there are extra marshy and waterlogged areas.
- Clothing must cover torso and legs. Cagoules may be compulsory if the weather is bad - come prepared. Remember to take a whistle!
- Courses will close at 15:00 - please finish and download by this time.
Miscellaneous
If the event has to be cancelled due to adverse weather or any other reason Guildford Orienteers maintains the right to retain a portion of the entrance fees to cover expenses that have already been incurred.
British Orienteering registered event: 83670