Upper Trail Lake is situated on the Kenai Peninsula in Alaska, approximately 24 miles north of Seward. The lake lies at an elevation of 459 feet and is part of a chain of lakes that includes Lower Trail Lake to the south. Access to Upper Trail Lake is available near the community of Moose Pass, which is located adjacent to the lake along the Seward Highway.

Paddlers can enjoy scenic views of the surrounding Chugach Mountains while on the water. The lake's glacial origins contribute to its aesthetic appeal. Wildlife that may be spotted around Upper Trail Lake includes moose, bears, river otters, and trumpeter swans.

The Alaska Railroad tracks run near the lake, offering paddlers the unique experience of seeing trains pass by during their excursion. Remnants of Gold Rush-era mining activity can be found in the area, adding historical interest to paddling trips. Guided kayak tours are available on Upper Trail Lake, typically lasting around 3 hours with small group sizes.

The lake connects to a larger system of waterways including Lower Trail Lake and Trail Creek. This connectivity may provide opportunities for extended paddling trips, though portages may be required.

Upper Trail Lake is a glacial lake, which means cold water temperatures year-round. As with all Alaskan waters, appropriate cold-water safety precautions are essential.

Given its proximity to the Seward Highway and the town of Moose Pass, Upper Trail Lake offers relatively accessible wilderness paddling experiences. However, visitors should check current regulations and conditions before planning a trip, as specific paddling restrictions or seasonal considerations may apply.