-pace tempo runs in training; slightly heavier or less stable runners like them for racing. The GRID Spy is a long overdue update to Saucony’s GRID Swerve, and it well deserves a ‘performance trainer’ label, not just for its weight, but for its wide appeal. It

SAUCONYThe Old Treasury, 7 Kings Road, Southsea, Portsmouth, Hants PO5 4DJ; 023 9282 3664; www.saucony.co.uk2005 MODELSSTABILITYGrid Trigon 3 Guide Grid T5 Grid Hurricane 7 CUSHIONEDGrid Trigon 3 Ride Grid Jazz X PERFORMANCEGrid Tangent MOTION

GRID Spy (£74.99); Mizuno Wave Precision