Argh... typed it and lost it, start again...
From Montem through Chalvey and over Eton Bridge to Windsor, then through Dedworth to Oakley Green and Fifield, south onto the Drift Road, along to North Street, Winkfield, pick up Braziers Lane, through Winkfield Row to Hayley Green, past Warfield Church and onto the Ascot Road. From there we can either turn right to Maidens Green and over Winkfield Plain or left to the other end of the Drift Road, then back through Dedworth to Eton. About 25 miles and 500 feet of climbing, although most of that is between mile 6 and 8, the rest is gentle bobbling.
Alternatively, out of Windsor on the A332 through the park to Woodside, pik up Lovel Road to North Street and follow the second half of the above. About 4 miles shorter but more climbing as the road through the park has a bugger of a
walk climb on it.
Plan C, about the same distance as Plan A but an extra 100 ft of climb is through Chalvey to Eton, then through Datchet to Old Windsor, up Crimp Hill (bring walking shoes
) and into the park at Bishopsgate, then car-free past the Copper Horse, through the Village and out onto the roads again at Cranbourne Gate, then to Woodside and follow the above.