Of course, it was all converted to spreadsheets around 1990 and still kept today.
Must have been Excel 3.0 - I was using the a free "bicycle log" calendar that came with a subscription to Bicycling Magazine. - 1981
Kept using free bank give-a-way calendars - jotting daily mileage and then totaling by week and by month. Got into Excel 4.0 in 1992 - but never used for bike logging until 1995.
Not to mention - I quit smoking Jan 1 - 1981 - and never had a cigarette since.