Minimum distance for Single Mode fiber -LR SFP?

Hi all,

I am in the process of purchasing what is necessary to move our infrastructure over to SMF.

Im particularly interested in minimum distance needed for -LR SFP's.

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It is 2m according to https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html

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However, is that overall length or does patch cabling affect this? Id like to use 1m cables from switch stack to patch.

Does the amount of patch cables affect this as well? Ex, stack, to LIU, to LIU (middle LIU), to LIU, to Core.

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Appreciate any help!