200 of the best boulders that can be easily reached Via Bus from Sheffield Centre.

Time to get to crag in minutes (From my accommodation somewhere south mid-Sheff):


Below an hour:

Lawrencefield: 33
Mother Cap: 33
Secret Garden: 33
Millstone Edge: 33
Over Owler Tor: 33 (Previous 4 crags have the same parking and are in the same Millstone area)
Derwent Edge (Dovestone, Wheelstones etc): 35
Gardoms Edge: 37
Bell Hagg: 37
Burbage South: 38
Rivelin Edge (& Quarries): 38
Houndkirk Tor (same stop as Burbage South): 38
Yarncliffe: 48
Froggatt Edge: 53

More than an Hour:

Wharncliffe: 62
Stoney Middleton: 67
Anston Stones: 73
Higgar Tor: 38 to Burbage South, then a 36 min walk
The P: 79
Upper Matlock Quarries: 82
Raven Tor: 84

Other possible but not great Options (climbs are not included in the ticklist below):

Crag S: 94
High Tor (Sport Climbing): 97
Boston Castle (Small Mag Lime Crag): 72 mins, but requires 3 buses.
Baslow: 84, but has a 52 min walk!
Curbar: 84, also has a 52 min wal hail the 272 bus & The Fox Housek