Daybreak Racing
Gorge Waterfalls 100K
Cascade Locks, OR (Marine Park Pavilion) → Cascade Locks, OR
Race guide
Updated 19 July 2026
The Gorge Waterfalls 100K, put on by Daybreak Racing, is a stunning out-and-back route that starts and finishes at Marine Park Pavilion in Cascade Locks, Oregon. Covering 99.8 km with 5,640 m of climbing, the race threads through the heart of the Columbia River Gorge — one of the most waterfall-dense corridors in North America — linking iconic trailheads like Wahclella, Ainsworth, and Wahkeena before reversing course and returning home. Despite a modest high point of just 478 m, the relentless accumulation of short, punchy ascents and descents on technical singletrack makes this race far harder than the elevation profile suggests. This is a race defined by cumulative fatigue, wet roots, and sheer volume of vertical movement rather than any single alpine summit.
Course & Terrain
The route runs east-to-west along the Oregon side of the Columbia River Gorge on the outward leg, reaching Wahkeena at 29.3 km before turning back through Ainsworth and Wahclella and returning to Cascade Locks at 62.1 km. From there, the course heads out again to Wyeth at 78.4 km before the final return leg brings you back into Marine Park. The trails are a mix of classic Gorge singletrack: rooted, mossy, and often slick. Stream crossings, wooden footbridges, and steep switchbacked trail sections are the norm. The low overall elevation means you are never above treeline, running almost entirely through dense Pacific Northwest forest and past cascading waterfalls. Technical footing demands constant attention — this is not a course where you can zone out and let the trail come to you.
The Decisive Climbs & Descents
Because the high point is only 478 m and the course is a multi-loop out-and-back rather than a point-to-point ridge traverse, there is no single monster climb that defines the race. Instead, the 5,640 m of gain is carved out in repeated short, steep efforts as the trail dips to creek level at each waterfall and then climbs back out. The section into and out of Wahkeena at 29.3 km and the equivalent return pass at approximately 70 km tend to be where the cumulative toll becomes palpable. The second half of the race — after the 62.1 km Cascade Locks aid station — is where many runners unravel. Legs that felt fine on the outbound leg on fresh trail will protest the same rooted descents on the return. Protect your quads on every downhill from the very first kilometer; there is no free descending on this course.
Pacing & Fueling Strategy
The tight cutoff window — 22:00 finish with a start-line departure early Saturday morning — leaves meaningful but not extravagant time, particularly in the back half. The AS4 Ainsworth return cutoff of 12:15 at 41.5 km and the AS5 Wahclella return cutoff of 14:15 at 53.1 km come in quick succession and should serve as your primary benchmarks. Aim to arrive at AS4 with at least 30 minutes of buffer, because the Wahclella-to-Cascade Locks segment (53.1 km to 62.1 km, cutoff 15:45) covers technical terrain that punishes anyone who has gone out too fast. Fuel early and often — the aid station spacing averages roughly 10–15 km, which is manageable, but the effort on the climbs will spike your caloric burn. Carry enough calories between stations to run independently, and don't skip solid food at the major crew-accessible stops at Wahclella (AS1/AS5), Cascade Locks (AS6/AS8), and Wyeth (AS7). Crew access at five of the ten checkpoints makes this a very crew-friendly race; brief, organized crew meetings will pay dividends late in the day.
Conditions to Expect
The Columbia River Gorge is a notoriously wet environment, and the Gorge Waterfalls 100K typically takes place in spring when the waterfalls are running at full force and the trails are at their most saturated. Expect mud, standing water in trail depressions, and moss-slicked rocks and roots throughout. Waterproof or water-resistant trail shoes with aggressive lugs are strongly recommended over lightweight racing flats. Temperatures at river level tend to stay cool — often in the 40s–50s°F at the start, potentially warming through midday but rarely hot in this canyon environment. A lightweight waterproof shell is worth carrying even if the morning looks clear; the Gorge is famous for localized weather systems that can bring mist or rain at any point. Trekking poles are commonly used and earn their keep on both the repeated steep ascents and the slick descents, particularly in the back 40 km when fatigue sets in.
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Checkpoints & cut-offs
⚠ Auto-researched from public sources — aid stations and cut-offs may be incomplete. Confirm against the official roadbook before race day.
0 km · 28 m · —
9.8 km · 53 m · —
21.4 km · 22 m · —
29.3 km · 70 m · —
41.5 km · 20 m · Sat 12:15
53.1 km · 41 m · Sat 14:15
62.1 km · 76 m · Sat 15:45
78.4 km · 50 m · Sat 18:45
94.6 km · 83 m · Sat 21:25
99.8 km · 28 m · Sat 22:00
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Course data researched from public sources — verify against the official roadbook.