Prior to 1997, the course was known to be short, which led to a new course that year, about which there was some uncertainty, leading to re-measurement in 1998. This revealed that the original course was short by 266 yards (4 miles and 1494 yards = 7803 metres). This new course was re-measured again in 2008 and slight adjustments made to the start and finish lines for easy recognition of the start position, placing it alongside an identifiable tree. See here for full details of the current, accurately measured 5 mile course, which is acceptable for records and rankings.

The current men's record is 23 minutes and 1 second (4:36 mile pace), held by Mumin Gala of Newham and Essex Beagles, and the current women's record is 26 minutes and 21 seconds (5:16 mile pace), held by Justina Heslop of Clapham Chasers.

The course record is the joint 20th fastest time ever run by a UKA registered runner.