Race-Tested Trail Kit: Saucony Endorphin Edge, Shokz OpenRun Pro Mini and SOAR Three Season Shorts 4.0

Introduction

Racing a hilly off-road half marathon is one of the best ways to find out whether new running kit can actually deliver. The Sussex Downs Off-Road Half Marathon, climbing up from Plumpton near Lewes into the South Downs, offered roughly 600 metres of elevation, thick mud after a week of rain, and long dragging inclines that punish both legs and gear. Three products went into this test under genuine race conditions: the Saucony Endorphin Edge trail shoes, the Shokz OpenRun Pro Mini bone conduction headphones, and the SOAR Three Season Shorts 4.0. Here is how each of them held up across 1 hour and 46 minutes of demanding trail running.

Saucony Endorphin Edge: Confident Grip on Muddy Trails

The Saucony Endorphin Edge is a cushioned trail shoe with a plate in the midsole, and it has quickly become one of the standout trail releases of the year. The question going into race day was whether its outsole lugs would be enough on wet, muddy South Downs terrain, or whether something more aggressive like the Speedcross 6 would have been the safer pick.

In practice, grip was never a problem. The mud on the course was thick and coagulated rather than slippery, and the Edge bit into it without slipping, while rocks and harder sections posed no issues either. The lugs are certainly sufficient for off-road use, even if they are not the most aggressive on the market.

Where the shoe really earns its place is on the flats and harder surfaces. The combination of the plate and midsole foam helps you run fast in a way that feels very similar to Saucony’s road-oriented Endorphin Speed 3. Over the tougher trail sections the pace sat around 5:20 per kilometre, but on the flat and road-like stretches it dropped under 4 minutes per kilometre, and the shoe felt great doing it.

There were no complaints about the thick cushioning on soft ground either, which is where highly cushioned trail shoes sometimes feel counterproductive and trudgey. The Edge gripped nicely without holding anything back, and it did not pick up mud, so it never turned heavy by the end. Comfort was faultless throughout, making it an excellent choice for races that mix tricky off-road terrain with runnable flat sections.

Shokz OpenRun Pro Mini: Same Sound, Smaller Fit

The Shokz OpenRun Pro Mini is essentially the same bone conduction headphone as the well-regarded OpenRun Pro, just in a smaller package. The sound quality is identical, the operation is identical, and the open-ear design keeps you aware of ambient sounds around you, which is exactly what you want when running on roads and shared trails.

The difference is the fit. The original OpenRun Pro sticks out from the back of the head quite a bit, which can get annoying when wearing hats or adjusting position. The Mini sits closer to the head and simply feels more comfortable, and despite its smaller size it still leaves plenty of room at the back. Even on a larger head there was ample space, so the Mini is likely a good option for most people rather than only those with small heads.

The sound remains impressive for bone conduction. It is not the equal of in-ear buds, but that is by design: you still want to hear the world around you alongside your audio. For most buyers, the Mini is the smarter pick because it is considerably cheaper than the OpenRun Pro while the sound difference is hard to detect. Unless you have a really large head, the Mini is the one to go for.

SOAR Three Season Shorts 4.0: Premium Comfort That Lasts

SOAR shorts are a fixture at big marathon start lines for a reason. The Three Season Shorts 4.0, the latest update to the line, feature an inner layer of very thin fabric that prevents chafing and keeps everything comfortable over long distances. They are also extremely light, so even when sweating heavily there is no hot, weighed-down feeling.

The rear pocket is genuinely useful in races. Carrying a couple of gels in the shorts and a couple more in a race belt makes it easy to separate caffeine gels from regular ones and know exactly which to reach for. As for what is new in 4.0, the changes are hard to notice, but the fundamentals were already excellent.

These shorts are undeniably pricey, but the value argument is simple: buy one pair, use them for races, and they last. A pair from four years ago is still in perfect condition and still getting race duty. If you want gear you can trust on the start line to do its job while you run as fast as you can, this is a sound investment.

Race-Day Takeaways

The race itself proved to be an advanced-level trail half marathon, with a big field of around 500 runners drawn from London and beyond, excellent organisation with clear signage, marshals and three water stations, and plenty of bottlenecking on narrow footpaths at the start. Finishing 31st in 1:46 was a solid result, but the long dragging climbs showed how much trail-specific hill work pays off. The kit, at least, passed without a single complaint.

Conclusion

All three products earned their place on a tough, muddy, hilly course. The Saucony Endorphin Edge proved it can race, combining genuine off-road grip with road-shoe speed on the flats. The Shokz OpenRun Pro Mini delivers the same strong bone conduction sound as its bigger sibling in a more comfortable, cheaper package. And the SOAR Three Season Shorts 4.0 remains the premium pick for race-day comfort, backed by impressive durability. If your target races mix technical trails with runnable sections, this combination is a very strong starting point.