Cisco can tell you the length of fiber compatible with the Transceiver you are using.
sh int e1/1 transceiver
Ethernet1/1
transceiver is present
type is 10Gbase-SR
name is CISCO-ACCELINK
part number is RTXM228-551-C98
revision is 1.0
serial number is ACW26281N3Z
nominal bitrate is 10300 MBit/sec
Link length supported for 50/125um OM2 fiber is 82 m
Link length supported for 62.5/125um fiber is 26 m
Link length supported for 50/125um OM3 fiber is 300 m
cisco id is 3
cisco extended id number is 4
cisco part number is 10-2415-03
cisco product id is SFP-10G-SR
cisco version id is V03