This one's entirely run on sand, so have your buckets and spades at the ready!
City of Cardiff 10K (Cardiff, September 3)
This giant 10K starts and finishes in Cardiff city centre, with a route taking in the River Taff, Cardiff Castle and Bute Park.
Ash Excellent 8 (Somerset, Sept 10)
Multiterrain event through country lanes and tracks, with plenty of hills and picturesque scenery.
Yorkshireman Off Road Half-Marathon (W Yorks, Sept 10)
The course takes you to the highest point in West Yorkshire, where on a sunny day you can see as far as the Peak District.
National HighlightsTotley Tormentor 17 (South Yorkshire, September 10)
If you're looking for an off-road test of your physical and mental toughness, look no further than the Totley Tormentor 17. This category 'A' fell race is the last in a five-race series, and includes climbing more than 4,000 ft through some of the Peak District's most demanding terrain.
Competitors have to navigate through nine checkpoints, as the race heads out from the outskirts of Sheffield to offer fantastic views over the Hope Valley.
Stansted Slog (Hants, September 17)
If you're not familiar with the joys of trail running, this a great chance to discover them. Starting and finishing in Stansted Park near Rowlands Castle in Hampshire, the race is run over forest trials and farmland with only 1,200 metres of tarmac to cover.
Don't expect a pancake-flat course, though. It's littered with long sweeping drags and energy-sapping hills, through some of the best Hampshire and Sussex countryside.
If that sounds too demanding, why not try the eight-mile Stansted Slug instead? The shorter distance and fewer hills make it a more user-friendly companion to the main event.
Swansea Bay 10K (W Glamorgan, September 24)
& City of Cardiff 10K (Cardiff, September 3)
You wait for a super-sized Welsh 10K to come along, and then two pop up almost at once. Isn't that just typical?
September sees Cardiff and Swansea compete for the biggest Welsh 10K on the running calendar, with an expected turnout of 3,000 runners at each race.
First off the blocks is the capital's event, which starts and finishes in the city centre. The route sails past the River Taff, past Cardiff Castle and through Bute Park.
Two weeks later, it's Swansea's turn to play host. After a record field last year, it's no surprise to see entries up this year too, and there are enough sub events to cater for a variety of ages.
One one of our top-rated 10Ks, the pancake-flat route winds through St Helen's Ground to Mumbles and back along the promenade, with great views of Swansea Bay.
The Welsh theme continues with the race rated September's best by RW members.
The Anglesey Marathon is the exemplary small event: very well organised, great value and well supported, though it attracts fewer runners than it deserves.
Run over a one-lap course, the race offers views towards Snowdonia and the Caernarfon coastline, winding through untouched countryside and small sleepy villages.
With a field of around 300 runners, this could be one of the best-kept racing secrets. There are 10K and 5K events too.
(Channel Islands, Oct 1)
Now in its second year, this kayak-bike-run event takes place along much of the rural and quieter north coast of the island.
Competitors will have to battle in two-man teams to cover and finish the course together. The challenge begins with 2K of kayaking in St Catherine's Bay, followed by a 40-mile cycle route, climbing out of the Bay and rolling along country roads.
Finally there's the small matter of an eight-mile trail run through woods and farmland, rising back up to cliff-top paths. While the hardier among you can tackle the full-length version, you may be pleased to hear there's a half-length version too.