Sunday early March annually (starts 11am)
Well renowned, organised and attended; the Bath Half Marathon is one of the longest established and most popular city centre road events in the country. Fast and flat the course appeals to all abilities – Vast sums are raised with charity fundraiser runners lining up alongside beginner runners challenging themselves to completing a half marathon in [...]

Sunday mid October annually (Starts 9-30am)

Lincoln
A trail run (or walk) endurance event over an almost full marathon or half marathon distance. Gaining popularity and very well put together with prizes and nice touches for all competitors who enjoy the well thought out and pleasant course.
Online entry and further details at http://spiresandsteeples.com

Sunday early September annually (starts 11am)
Blacksmiths Arms, Rothwell
Good all round well organised longstanding 10 mile road race. Limited facilities at race HQ/start so you will need to change in your car but other than that all you could want/need from a local club event with competition and prizes.
 Enter online or for more details visit www.woldsvets.co.uk

Sunday mid to late August annually (starts 11am)

Village Hall, Welbourn, LN5 0NJAn off road rural offering organised by the Toonie Express Adventure Racing Team. Limited to 200 entrants online early entry is advised as this event gain popularity year on year. Well organised and supported a fun late morning and early afternoon’s running. A 10k walk and fun run [...]

Sunday late July annually (starts 9-30am)
Another new’ish event by independent organiser Fat Feet, the Grimsthorpe Half Marathon at Grimsthorpe Castle in Lincolnshire. A half marathon test in beautiful surroundings with the level of organisation and support expected. 
Further details and entry via www.fat-feet.co.uk/grimsthorpe.aspx

2 days late July annually
Grimsthorpe Castle, Lincolnshire
An interesting test of endurance and stamina brought to you by enthusiastic independent organiser Fat Feet. What promises to be an exceptional race at an inspiring location this is an ultra marathon of 70 miles. A non stop race the route will be lit with glow sticks during the evening hours and [...]

Sunday early June annually (starts 11am)

Jubilee Park, Woodhall Spa

The Woodhall Spa 10K has tripled entry numbers during the course of its first few years and with this big leap in competitors on line entry is suggested to aviod disappointment as overall levels of particpation is limited to 1000. The course is a flat single loop of the grounds on quiet country [...]

Sunday end of May annually (starts 9-30am)
Bourne Woods, South Lincolnshire
The Woodland Half Marathon is organsised by an independent event organiser (Fat Feet) within Bourne Woods in South Lincolnshire and the race/run route is circuits of the main woodland trail and open farmland. All the usual organisation and support with T-shirts and Medals for finishers.
Details and entry via webpage www.fat-feet.co.uk/woodland.aspx

Sunday early May annually (starts 9-30am)
Sports Pavillion, Manor Close, Langtoft
The Langtoft Road Run is an annual event held on the first sunday in May. This popular event consists of a 3K fun run through the village of Langtoft, followed by a 10K road run through the local villages with a good atmospshere, healthy competition and prizwes or just [...]

Sunday mid April annually (starts 9-15am)
Lion Gates, Belton House, Grantham, NG31 9SH
One of those new events you know will secure its place in the racing calendar. A challenging, hilly, trail course plus!…. The event HQ and route is a special one as Belton House is a 17th Century National Trust property and also the setting for the Belton Horse Trials which follows but as a entrant [...]