Yellow Roads Only, except where stated.

All Spot Heights starting with a 6 or ending with a 7 are Black Spots.

TC1 @ SH 69 in GS 6666

67 66 67 LWR 66 66 66 67 66 67 65 67 65 65 LWR 64 67 64 66 64 64 65 65 65 65 65 LWR 66 65 65 65 67? 67? 64 66 65 64 64 63 62 62 62 65 66 62 66 63 66 63 67 68 63

Then CRO:


Then continuing YRO:

64 71 70 69 65 66 66 69 66 67 70 LWR 68 70 69 70 70 70 69 71 68 71

Then CRO:


Then YRO again:

63 71 63 70 63 63 63 69 68 64 65 68 66 68+67 68 68 68 69 70 67 70 66 69 69 70

To TC2 at next V GL.

The route should be plotted using Autop(i)lot. You may need to switch AP off and plot manually on some sections.
 

I have been wanting to find a good area where the Northings and Eastings are the same for some time. Obviously there are a lot of them dotted around the maps, but finding one that works as a route card isn't so easy. The added bonus of this one was that I could make it Yellow Roads Only (on or two of you still tried using whites), with a couple of CRO herringbones to link it together. The spot height black spots caught out one or two, particularly reaching TC2. A number of competitors also chose to finish on GL70 instead of 71. The 70 was certainly the NEAREST vertical grid line, but you have to cross another horizontal to reach it so I have not allowed this solution. You enter grid square 7065 from the West by crossing 70, the last grid line in the list. For the NEXT grid line you then have a choice of 65 (h) or 71 (v), I specified the 'v' so you should finish at 71, avoiding the 69 spot height to get there.