The 2010 Manx Grand Prix races were held between Saturday 21 August and Friday 3 September 2010 on the 37.733-mile Mountain Course.
The Blue Riband event of Manx Grand Prix Race week was won by Simon Fulton claiming victory in the Senior Manx Grand Prix including a lap at an average speed of 120.119 mph. A double was completed by Roy Richardson winning the Senior Classic and Junior Classic races with Peter Wakefield winning the Classic Lightweight class and Chris McGahan the winner of the inaugural Formula Classic Race. The Newcomers Race provided a double win for local Isle of Man competitors with Tim Venables the overall winner and Jonny Heginbotham winning the Class B event. The Post Classic Race was dominated by Michael Dunlop, the overall winner with Chris Palmer first in the Class (ii) Post Classic Junior race. The combined Lightweight Manx Grand Prix produced two new winners for perennial Manx Grand Prix competitors Neil Kent and also Philip McGurk in the Ultra-Lightweight class. During the Junior Manx Grand Prix, two competitors crashed fatally at Alpine Cottage on lap 2. The Junior Manx Grand Prix was declared a result after 1 lap and Michael Sweeney the winner after Simon Fulton received a 10-second race penalty and demoted to third place.
Practice
The first practice session for the 2010 Manx Grand Prix including the Newcomers Speed Control Lap was scheduled for 17:20 pm on Saturday 21 August 2010. The public roads that form the Snaefell Mountain Course closing 1 hour earlier at 17:00 pm for the first time at a Manx Grand Prix meeting. The start of the Newcomers Speed Control Lap was delayed over 1 hour due to clearing showers and low mist on the Mountain Section of the course. The familiarisation lap started at 18:28 pm with 41 new competitors escorted in small groups by three TT Travelling Marshals accompanied with experienced former Manx Grand Prix competitors including Nigel Beattie, Mark Parrett, Carolynn Sells, Isle of Man TT Liaison Officer John Barton and Isle of Man TT winner Chris Palmer. The untimed practice session for the Junior and Senior classes started at 18:50 pm followed by the Lightweight and Classic machines at 19:20 pm with practice ending at 20:05 pm. The Newcomer Osmo Partti from Finland crashed at Sulby Bridge and was uninjured during the first practice session and Colin Martin was evacuated by the Airmed Helicopter to Nobles Hospital after an accident at Cruickshanks Corner in Ramsey.
The second practice session on Monday 23 August 2010 was held in bluster conditions and early evening rain showers that left wet roads all round the Mountain Course. Despite the conditions, the fastest lap of the session was set by local Isle of Man competitor John Smyth in 21 minutes and 45.78 seconds at an average speed of 104.021 mph. The Senior Classic class was led by Olie Linsdell riding a 500c Paton recording a time at an average speed of 100.327 mph and Michael Dunlop set the fastest time in the Post Classic with a time of 24 minutes and 28.12 seconds an average speed of 92.518 mph riding a 997 cc Suzuki XR69 motorcycle. The fastest time in the Newcomers class 'A' was set by Andy Fenton riding a 600 cc Yamaha in 21 minutes and 58.61 seconds an average speed of 103.009 mph and Dan Sayle led the Lightweight class with an average speed of 96.022 mph. Minor incidents reported during the Monday evening practice session included Steve Hodgson and Tim Venables at the Gooseneck and Adam Easton at Bedstead Corner.