Screenshots on an HTC Android phone using the MyTrails app, with FREE map - take your pick. 
Alternatively invest £12 per year, (£1.50 per month) for 1:25k and 1:50k OS maps
Special Offer of free online OS map from MyTrails!!
Plus a photo of the Memory-Map screen -

a) Microsoft Terrain	b) Microsoft Map	c)  OpenStreetMap
d) 4UMaps	e) Google Map	f) Google Terrain

g) OpenCycleMap	h) OpenHikingMap	i) Photo of Memory-Map screen showing OS map*

 *Reproduced from Memory-Map 1:50000 scale by permission of Ordnance Survey® on behalf of The Controller of Her Majesty’s Stationery Office. ©Crown copyright 2000 All rights reserved. Licence number 100047659.

For the MyTrails displays here, the track (where I went last year) is light coloured because of the low altitude near the river; it is red or black at higher elevations.  The colour can be set to a single selected colour (as on the RRR home page) 

This section is being developed - email enquiries and I will try to help.

The following description is probably only meaningful if you have a SmartPhone or Tablet!  It is based on an Android phone (HTC Desire C), but no doubt similar for other Android models. A tablet should also work, but I would not want to carry one with a large screen!  Similar principles should apply for other operating systems (Apple OS or Windows 8), but they need a different app.   For the iPhone and iPad a suggested app is MotionX GPS: <http://gps.motionx.com/iphone/>. As I do not have an Apple device, I can't offer further advice, but reading the following may give you some ideas.

You will probably need to have additional memory in your phone (I have inserted a 32 Gb microSDHC card) and it simplifies matters if you install Dropbox to facilitate file transfer between your phone and PC.  Answer some simple questions and get 18 Gb in The Cloud for free!

Three downloads are required
a) a suitable app
I have tried three apps.  My Tracks (linked to Google Maps) is easy to use for recording runs, but it is not easy to upload a route.  It was also too responsive to inadvertent screen pressings.  On enquiring about loading a route to RunKeeper, I was advised to keep to MyTrails!  My Tracks and RunKeeper are more concerned with sharing your experience than following a route, and do not have all the features described here.  MyTrails is an Android app produced by FrogSparks, downloadable from the Play Store.  Information here is summarised from the MyTrails manual, which can be accessed from the FrogSparks website.  The free version is probably adequate if you are downloading maps as you go; the critical benefits of the paid-for version (around £2) is that you can create a larger downloaded map (see next item) and you can get a warning when you reach a waypoint on the route, i.e. a warning that you need to look at the phone to check where to go next.

b) maps. 
MyTrails offers many different maps, many free, but you can subscribe to the OS 25k and 50k maps for a monthly fee.  The free map I prefer for the RRR is OpenStreetMap, which shows many footpaths.  Mapquest is very similar, with 4UMaps a good alternative.  See examples above, the Google versions being done later, different track file.  For hill-walking or fell races, I would want a Topo map, with contours, e.g. OpenHikingMap (Europe), more visible footpaths.  Consider: The map may not be easy to read if it is sunny (as has often happened!) so photographic depiction of terrain (as in Microsoft Map) would not be easy to follow.  Brighter screens use up the battery more quickly!  The railway is not easy to see on Microsoft Terrain or Google Map, and omitted from Google Terrain - not ideal as they can be useful navigation aids.  You can invest £12 per year, (£1.50 per month) for 1:25k and 1:50k OS maps, but I plan to try the free maps first. 

Special Offer: FrogSparks have offered to make these OS maps available online to walkers and runners for an extended test period, (till after the event rather than the usual 7 days).  Register in the MyTrails app, select (from the menu) Preferences > Accounts > FrogSparks, and send an email to paour 'at' paour.com your registered address, say you are a RRR participant and ask (politely) for a temporary OS subscription.  Let me know how this goes.

These can be large files, which can be downloaded from the Web in advance rather than 'on the fly'.  You can let your phone download the map as you go, relying on a good network connection (and using valuable data megabytes!), or download the appropriate map in advance. For me, with a limited monthly data download limit, I prefer to create an offline map.  Before doing so, first download the overlay of the track and route - you can then easily define the bits of map you want (a total of 9244 map tiles for the RRR, around 72 Mbytes for the OpenStreetMap, 85 Mbytes for the OpenHikingMap).

c) the route for this event
For MyTrails, the .gpx version is required.  This has the track (where I actually went last time), waypoints (decision points, i.e. the turns) and route (straight line between waypoints).  Other versions are available, see GPS routes, tracks and waypoints.

Procedure:

Install MyTrails (free) and ideally add MyTrails Pro License from the Play Store.  More information, including manual, on FrogSparks website.

In PlayStore, search for 'my trails'

Download the route file (right click, Save As , to you PC or Dropbox).  This is updated if necessary right up to race day, depending on late changes forced upon us by (e.g.) path closures.  Initially, the last year's file is provided, and is updated as appropriate.  See the Changes page where file updates are reported (@ symbol is added when change is incorporated into GPS files).  It is recommended to update the route file in the week before the event. 
Typically, download the route file to a PC, copy it to your dropbox and when transferred to your phone.  Open MyTrails, open the menu (3 dots one above the other, top right), select Manage tracks, select Load, find the appropriate route file, and load it.

To create an off-line map, select Map Manager from the menu.  Click Create Offline.  Click below Map Source, select the map you want (e.g. OpenStreetMap in place of Microsoft Terrain), edit name (e.g. RRR Offline).  Click Next.  The map to be created offline will be displayed.   Highlight 'Track'.  Click Select, and find rrr_gps_map_gpx.gpx  Click the name, and the display will go back to show the map to be created offline, to include the full route.  Now select Start.  It will take some time to download the map.  Once done, select Map Manager again, make sure RRR Offline is selected to be Shown, others Hidden. 

I have zipped my copy of the OpenStreetMap for the RRR; save the file on your computer, unzip it and copy the folder structure to the SD card on your phone, to the folder MyTrails/offline.  (I zipped the files to retain the folder structure).  You then have to find the map under Settings - Map Manager to activate it.  It is a very big file (71 Mbytes) so it may well be easier and quicker to create your own offline map!

In Preferences, sub-menu Behavior, you may want to set GPS Orientation (direction of travel up screen, not North), Disk Cache Very Large, and under Waypoints Proximity Location (e.g. Vibrate and speak or Vibrate and ring).  Under Other, Keep screen on (dim) will give quick restart; Let phone sleep will save battery power, but then the Proximity Alert won't work.  To prevent accidental input on touch screen, set Screen lock (unlock with 'volume up' key).  Don't set Optimize battery or you will lose the proximity alert. (American mis-spellings taken from app!)

To start recording your track, click the left-hand of the group of 3 buttons at the top, like an electrical lead or snake.  Click Clear to remove records of previous tracks, then (on the start line) click Resume.  At the Finish, click on Pause (in place of Resume), and Save or Save then clear.  In Track Manager, press and hold a track name to get a sub-menu including upload track, e.g. to dropbox for transfer to your PC for Google Earth, etc.   

Use the + or - buttons to zoom in or out, or use 2-finger swipe. A short swipe will briefly remove the track so that you can see the map detail behind the track.  The colour of the track is altitude related, scale along top of display. Black and Red at the top of the hills, green and yellow on low ground.  The other button (circle with sat receiver) centres the current location in the display.

a) Operational menu, click middle icon at top ('snake') Clear to reset, Save then clear if you want the previous outing saved.  Resume to start (Pause to finish).	b) Set-up menu, from right icon at top (3 dots)	c)  Track Manager sub-menu - select the track to display
d) Map Manager sub-menu, to create and later select for display	e) Create offline sub-sub-menu - select map type at top, edit name, click Next	f) Click Track (instead of Map), then find RRR Track.  Map to be created is based on track

For the Adventurer, connect it to your PC and upload RoundRotherhamRoute.mmo to the User Data folder on the device (click on link and Save File As.../Save Link As...)

After disconnecting and restarting, on the Maps page, click the Tools icon, Overlay, Open and select RoundRotherhamRoute.mmo.  Using the Overlay menu you can Show or Hide All, Track, Route, Waypoints, etc.  Set an alarm for approaching a waypoint (set, e.g., to 50 m)

The area is still under development, and will be expanded upon before the event. Contact me,  Henry Marston, if you have problems with the software or maps; I may be able to help.