For an explanation of the rankings, see
here.
Episode Rankings(previous episode's positions given in brackets)Teams in finish order1) Rob & Kimberly (3)
2) Peter & Sarah (5)
3) Tyler & James (2)
4) Erwin & Godwin (1)
5) David & Mary (7)
6) Lyn & Karlyn (6)
7) Dustin & Kandice (4)
8) Tom & Terry (8)
Teams ranked by performance throughout the episode1) Rob & Kimberly (4)
2) Tyler & James (3)
3) Erwin & Godwin (1)
4) Peter & Sarah (6)
5) David & Mary (8)
6) Tom & Terry (2)
7) Dustin & Kandice (5)
8) Lyn & Karlyn (7)
Peter & Sarah are ranked fourth because they were the second-last team to complete the roadblock and thus find the detour clue. They made up a lot of time at the detour, but that wasn't enough for them to be ranked above Tyler & James and Erwin & Goodwin.
Tom & Terry are ranked ahead of Dustin & Kandice and Lyn & Karlyn because they completed the roadblock and got to the detour before both teams, even though they finished after them. Dustin & Kandice were the first team to get to the bus station at the beginning of the episode, which is enough for them to be ranked ahead of Lyn & Karlyn.
Overall RankingsTeams ranked by average finish position1) Tyler & James (1)
2) Peter & Sarah (2)
3) Rob & Kimberly (4)
4) Erwin & Godwin (6)
5) Dustin & Kandice (3)
6) Tom & Terry (7)
7) David & Mary (9)
8) Lyn & Karlyn (8)
Teams ranked by average episode performance1) Tyler & James (2)
2) Peter & Sarah (1)
3) Rob & Kimberly (7)
4) Tom & Terry (4)
5) Erwin & Godwin (6)
6) Dustin & Kandice (5)
7) David & Mary (9)
8) Lyn & Karlyn (8)
Roadblock RecordDavid: 3, Mary: 1
Dustin: 2, Kandice: 2
Erwin: 3, Godwin: 1
Lyn: 1, Karlyn: 3
Peter: 3, Sarah: 1
Rob: 3, Kimberly: 1
Tom: 2, Terry: 2
Tyler: 2, James: 2