Anyone here from Rotherham?

[Cathryn]

It depends to some extent where in Rawmarsh you're starting from, but here's one 16 mile option:
https://cycle.travel/map/journey/280510

Generally quiet lanes/roads couple with a good proportion of firm cinder/crushed limestone trail, although there might be a few puddles given recent weather. It's lovely in summer. Wildlife (Old Moor wetlands), heritage (Elsecar Branch Canal & the Heritage Centre), and history (Holy Trinity Church in Wentworth and Wentworth Woodhouse definitely worth a look ... although these may of course be familiar to your SiL).
Several cafe options: RSPB Old Moor Visitor Centre, Elsecar Heritage Centre, Village Tea Rooms or Garden Centre in Wentworth.

It's a bit of a climb from Elsecar up to Wentworth (and there's a short one approaching Wath), but otherwise OK, especially if SiL is on an e-bike.

@IaninSheffield We did your route today! It was brilliant, thank you SO much! Two cafes to warm us up in the bitter cold! My SIL and I are super grateful!

 

[Milzy]

I don’t know any cycle routes but I visit as there’s a lot of good walking & Wentworth nearby has some good pubs, garden centre & antique shops.

 

[IaninSheffield]

@IaninSheffield We did your route today! It was brilliant, thank you SO much! Two cafes to warm us up in the bitter cold! My SIL and I are super grateful!

Glad you enjoyed it.
Always happy to try to present Rov'rum area in a positive light.

 

[Cathryn]

Glad you enjoyed it.
Always happy to try to present Rov'rum area in a positive light.

my SIL was astonished at the places we went, she had no idea she lived near such nice places!