Following routes are ultra-long trunk services exceeding 30km
per direction. Drivers of these routes are heroes, especially SMRT
61
5
– 33km - semiexpress PIE
10
– 32km
14
– 33km
30
– 37km - semiexpress ECP
51
– 37km
61
– 39km
66
– 33km
67
– 33km
154
– 34km
167
– 30km
168
– 30km - semiexpress SLE/TPE
170
– 34km - semiexpress in JB
171
– 34km - semiexpress BKE
178
– 30km
196
– 31km
197
– 32km
858
– 37km - semiexpress SLE/TPE
961
– 36km
963
– 30km - semiexpress BKE
966
– 33km - semiexpress BKE/PIE
858 and 966 are semi-express Loop services despite their long
trip, hence their journey time is shorter than expected
858 SLs has opportunity for toilet break at Changi Airport, but
not 966
Distance is distance but...
What about the TIME taken? 170 last the longest, normally 2 - 3
hours per ride from terminal to terminal and back. If got jam, lagi
until 6 hours 
