| Burbage Summer Sharpener 2 | Wed 13th Jun 2012 | 3/32 | 00:49:17 | See all Karl Marshall at Burbage Summer Sharpener 2 |
| Wingerworth Wobble | Sat 26th May 2012 | 9/82 | 00:33:39 | See all Karl Marshall at Wingerworth Wobble |
| Totley Moor | Tue 22nd May 2012 | 52/242 | 00:43:05 | See all Karl Marshall at Totley Moor |
| Burbage Summer Sharpener 1 | Wed 16th May 2012 | 8/41 | 01:06:40 | See all Karl Marshall at Burbage Summer Sharpener 1 |
| Dark & White MM 3 | Sun 13th May 2012 | 4/131 | 03:02:43 | See all Karl Marshall at Dark & White MM 3 |
| Tiger’s Todger | Wed 2nd May 2012 | 43/238 | 00:40:21 | See all Karl Marshall at Tiger's Todger |
| Dark & White MM 2 | Sun 15th Apr 2012 | 6/133 | 03:06:54 | See all Karl Marshall at Dark & White MM 2 |
| Urban Nights Race 5 | Thu 8th Mar 2012 | 14/ | 00:51:00 | See all Karl Marshall at Urban Nights Race 5 |
| Urban Nights Race 4 | Thu 9th Feb 2012 | 5/10 | 01:10:29 | See all Karl Marshall at Urban Nights Race 4 |
| Urban Nights Race 3 | Tue 10th Jan 2012 | 6/19 | 00:47:58 | See all Karl Marshall at Urban Nights Race 3 |