Here's a loop if you want z ride to return to the clubhouse. Just over 60 km (so almost 40 miles) in a clockwise direction, showing how nice the countryside around Corby can be.
Here are two 55 Km loops that leave the clubhouse, go West around Market Harborough and then return to the start point for refreshments. One loop goes clockwise, and the other simply reverses the ride and goes anti-clockwise - make sure you download the right one!
For a Sunday club run, go anti-clockwise and stop off at Waterloo Farm, just North of Great Oxendon.
Here are some routes that we regularly use for club runs. Use the Categories to limit the routes you see. The compass points relate to where the ride goes from the clubhouse. Routes can be downloaded for your cycle computer, either directly as a GPX or via Strava for TCX.