Garmin 5206 Certified as Fenix 9 Pro Wins Marathon Test

Garmin fitness product model 5206 has been certified in Indonesia in three variants, according to The5kRunner’s filing roundup for the week ending October 28, 2026. The identifier tells us there is another Garmin product moving through regulatory channels, but not what type of device it is, when it will ship, or which athletes it targets. Three variants do suggest Garmin is preparing more than a single, isolated regional configuration.

Fenix 9 Pro takes the race-day test

While the 5206 remains a mystery, Garmin’s current top-end watch got a useful real-world examination at the Frankfurt Marathon. Tom’s Guide put the Garmin Fenix 9 Pro and Apple Watch Ultra 4 on the same runner, manually lapping both watches every 5km and checking the results against kilometer markers and a race bib’s recorded pacing.

The Fenix 9 Pro logged 42.76km, while the Apple Watch Ultra 4 logged 43.33km. The runner’s bib recorded an average pace of 4:52 min/km; Garmin reported 4:48 min/km and Apple reported 4:44 min/km. Neither wrist GPS trace was perfect, which is no surprise among skyscrapers, crowds and 18,000 runners. Still, the Fenix was consistently closer in this one test. For marathoners trying to hold a pace through an urban course, that difference matters more than a glossy list of post-run metrics.

Heart-rate results were less decisive. Both watches recorded an average of 172 beats per minute, while an Oura Ring 5 recorded 179 beats per minute. That does not establish a winner for heart-rate accuracy, especially without a chest strap reading electrical ECG signals as a reference. It does show that GPS and pace, rather than wrist optical heart-rate data, were the clear dividing line on this rainy race day. Tom’s Guide also found the Fenix easier to operate in the rain because of its extra buttons.

More Garmin hardware, and familiar software friction

The same filing roundup lists four unnamed Garmin models approved in the UAE: A04937, A05177, A05178 and A05244. The Edge 1060 was also re-certified in Singapore and the Eurasian Economic Union. That Edge has been on the regulatory trail for a while, as covered in our [Edge 1060 filing roundup](/en/articles/garmin-edge-1060-filing-and-amazfit-activity-sync-june-2026-roundup-2026-06-08). Re-certification is not a new-product announcement, but it is a sign the model remains active across markets.

There is a less polished side to the Garmin picture. The5kRunner’s October 23 fix roundup cites Edge 1050 freezes, Varia 715 drops, lost Bosch eBike pairing, Fenix 8 distance and touchscreen issues, Bluetooth problems, and several other faults across Garmin, Wahoo, Suunto, COROS and KICKR products. Firmware support is part of owning a training device, and the sheer range of listed issues is a reminder to update carefully before a key event, rather than on the night before it.

What is missing from the 5206 filing is almost everything athletes actually need to judge it: no product category, sensor list, battery claim, display details, price or launch date. We also do not know whether its three variants represent sizing, connectivity or regional differences. Filing watchers should resist turning an identifier into a finished spec sheet.

Verdict: the Fenix 9 Pro has the stronger race-day case than the Apple Watch Ultra 4 in this Frankfurt marathon comparison, especially for wet-city pacing. The Garmin 5206 certification is worth tracking, but it is only an early clue, not a buying signal.