It is late and I may have made mistakes.
So might the UMCA
1 If you use the official results where available you get a different result. Up to and including 31 May (day 151):
Spreadsheet: 22249.1
Official results: 22711.5
So using the official results where posted and the spreadsheet since Steve's total to date is 26073.4 leaving 247.4
runs miles per day required.
Or, projecting forward using the published schedules, the lower schedule ends up 946.6 short and the upper schedule beats Tommy by 955.6 miles.
1As well as the discrepancy noted here when I was scrutinising Miles daily results I found the spreadsheet.php often disagreed with the details.php. Never mind eh? The official results will settle which is correct? No, when they were posted including Miles for the first time they disagreed with both on some days. Corrections have been made since.