We’re back for a 2023 MBO Score series and have planners and courses lined up to test your route planning and navigation skills. Events are run by SLOW in affiliation with the BMBO. Individual event and series/league results 2023.

Event Schedule and Information

23rd AprilHanningtonIan Norfield
21st MayOxtedAdam Eyre-Walker
Sat 10th JuneIvinghoe, ChilternsNuno Cerqueira
8th JulyHolmbury St MaryJulian Hemsted
9th JulyHolmbury St MaryDave Uglow, Nuno Cerqueira
5th NovemberPreston CandoverMark Humphrey, Sid Hardy
General info: SLOW MBOEvent & Series/League Results: 2023Event updates: Newsletter
Social:Facebook GroupStrava Club

Our events this year are mostly using the phone based app MapRun. Instructions for using the app are published in the event details.

We have several Virtual MBO Score Courses available using MapRun which you can go and ride at any time. You could also create your own MapRun course.

If you would like to contact any of the organisers, email the series coordinator Dave Uglow at:

Online Entry

Your age class for ALL 2023 events is your age on 31st Dec 2023.

All competitors take part at their own risk.

Results will be available on the SLOW and BMBO websites shortly after the event.

Event Details

Maps will be 1:25,000 Ordnance Survey format. Events are public – all are welcome. Start times are shown on the BMBO website.

For events run using a phone based app further information can be found in Instructions for using MapRun.

Events will be run under British Mountain Bike Orienteering rules, which competitors are advised to read in advance. The BMBO also has some helpful MBO Score tips.

All riders must wear a helmet and carry a whistle and first aid kit (a minimum of plasters & dressings). The following equipment is also recommended:

  • Mobile phone for use in an emergency
  • Waterproof top
  • Compass and map board or cardboard to support the map on your handlebars

The majority of riders use mountain bikes but many of the events are suitable for gravel bikes. You may gain on the smoother sections but have to go more slowly on rougher tracks. If you’re not familiar with the terrain at an event location please contact the organisers.

Entry Classes

  • Solos
    Y18 = Youth 15 – 20
    M21/W21 = Open, 21 to 39
    M40/W40 = 40 to 49
    M50/W50 = 50 to 59
    M60/W60 = 60 to 69
    M70/W70 = 70+
  • Pairs, Mixed Pairs
    Y18 = Youth 15 – 20
    M21/W21, MIX21 = Open, combined age 34* to 79 (* minimum 17+)
    M40/W40, MIX40 = combined age 80 to 99
    M50/W50, MIX50 = combined age 100 to 119
    M60/W60, MIX60 = combined age 120+
    GEN = Generation (Youth 10-17 accompanied at all times by Adult 18+)
  • Teams of 3+
    GEN = Generation (enter online in a suitable combination of pairs and solos)

Series Prizes

Series prizes will be presented to the first and second places in the following categories:

Male Veteran (50+), Male Senior (18-49), Female Veteran (50+), Female Senior (18-49), Youth/Junior.

Series rankings are based on your top 4 scores from this years events. To qualify for prizes or rankings, participants must have attended at least 3 events.


Listed below are the most common route options. See Map Symbols for a more detailed list of permitted/not allowed routes on an OS 1:25,000 scale map.

Out of bounds: Footpaths, tracks, dual carriageways, anything private

Permitted: Bridleways, byways, single carriageway roads, white roads, permissive bridleways