Competitors from all over the UK take on TV's toughest obstacle course.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2015-04-11 | 60 min |
| Season 1 | Episode 2 | Episode 2 | 2015-04-18 | 60 min |
| Season 1 | Episode 3 | Episode 3 | 2015-04-25 | 60 min |
| Season 1 | Episode 4 | Episode 4 | 2015-05-02 | 60 min |
| Season 1 | Episode 5 | Episode 5 | 2015-05-09 | 60 min |
| Season 1 | Episode 6 | Episode 6 | 2015-05-16 | 60 min |
| Season 1 | Episode 7 | Episode 7 | 2015-05-23 | 60 min |
| Season 1 | Episode 8 | Final | 2015-05-30 | 60 min |
| Season 2 | Episode 1 | Episode 1 | 2016-01-02 | 60 min |
| Season 2 | Episode 2 | Episode 2 | 2016-01-03 | 60 min |
| Season 2 | Episode 3 | Episode 3 | 2016-01-09 | 60 min |
| Season 2 | Episode 4 | Episode 4 | 2016-01-16 | 60 min |
| Season 2 | Episode 5 | Episode 5 | 2016-01-23 | 60 min |
| Season 2 | Episode 6 | Semi-Final | 2016-01-30 | 60 min |
| Season 2 | Episode 7 | Semi–Final 2 | 2016-02-06 | 60 min |
| Season 2 | Episode 8 | Final | 2016-02-13 | 60 min |
| Season 3 | Episode 1 | Episode 1 | 2016-12-31 | 60 min |
| Season 3 | Episode 2 | Episode 2 | 2017-01-07 | 60 min |
| Season 3 | Episode 3 | Episode 3 | 2017-01-14 | 60 min |
| Season 3 | Episode 4 | Heat 4 | 2017-01-21 | 60 min |
| Season 3 | Episode 5 | Heat 5 | 2017-01-28 | 60 min |
| Season 3 | Episode 6 | Semi-final 1 | 2017-02-04 | 60 min |
| Season 3 | Episode 7 | Semi-final 2 | 2017-02-11 | 60 min |
| Season 3 | Episode 8 | Final | 2017-02-18 | 60 min |
| Season 4 | Episode 1 | Heat 1 | 2018-04-14 | 60 min |
| Season 4 | Episode 2 | Heat 2 | 2018-04-21 | 60 min |
| Season 4 | Episode 3 | Heat 3 | 2018-04-28 | 60 min |
| Season 4 | Episode 4 | Heat 4 | 2018-05-05 | 60 min |
| Season 4 | Episode 5 | Semi-Final | 2018-05-12 | 60 min |
| Season 4 | Episode 6 | Semi-Final 2 | 2018-05-19 | 60 min |
| Season 4 | Episode 7 | Final - Part 1 | 2018-05-26 | 60 min |
| Season 4 | Episode 8 | Final - Part 2 | 2018-06-09 | 60 min |
| Season 5 | Episode 1 | Heat 1 | 2019-04-13 | 60 min |
| Season 5 | Episode 2 | Heat 2 | 2019-04-20 | 60 min |
| Season 5 | Episode 3 | Heat 3 | 2019-04-27 | 60 min |
| Season 5 | Episode 4 | Heat 4 | 2019-05-04 | 60 min |
| Season 5 | Episode 5 | Semi-Final 1 | 2019-05-11 | 60 min |
| Season 5 | Episode 6 | Semi-Final 2 | 2019-05-18 | 60 min |
| Season 5 | Episode 7 | Eliminator | 2019-05-25 | 60 min |
| Season 5 | Episode 8 | Grand Final | 2019-06-01 | 60 min |
| Season 6 | Episode 1 | Episode 1 | 2022-09-10 | 50 min |
| Season 6 | Episode 2 | Episode 2 | 2022-09-17 | 60 min |
| Season 6 | Episode 3 | Episode 3 | 2022-09-24 | 60 min |
| Season 6 | Episode 4 | Episode 4 | 2022-10-01 | 60 min |
| Season 6 | Episode 5 | Episode 5 | 2022-10-08 | 60 min |
| Season 6 | Episode 6 | Episode 6 | 2022-10-15 | 65 min |
| Season 6 | Episode 7 | Episode 7 | 2022-10-22 | 60 min |
| Season 6 | Episode 8 | Grand Final | 2022-10-29 | 65 min |
