Organised by One Step Beyond, the series visits Clumber Park, Sherwood Pines and the National Water Sports Centre.
All races will follow a sprint duathlon format, attracting a mixture of novices and seasoned athletes.
Every age group winner will receive prize vouchers for Giant Store Lincoln and the overall Series winners will receive a £250 overall series prize voucher.
The Off Road Series features three events, with the first set for Clumber Park on 17 October.
Entries for Clumber Park event will close on Tuesday morning, 13 October. Enter here now:http://www.onestepbeyond.org.uk/midlands-off-road-duathlon-series.php.
There are also 10km trail running events taking place alongside the duathlon events, find out more at http://www.onestepbeyond.org.uk/midlands-10k-trail-run-series.php
Race 1 – Clumber Park, 17 October
Race 2 – Sherwood Pines, 07 November
Race 3 – National Water Sports Centre, 21 November