This Saturday I completed the North Bend Triple Crown. 35.5 miles, and 12,300' gain and loss, in 13 hours and 15 minutes.
At a high level the Triple Crown is up and down: Mount Si, Mount Teneriffe, and Mailbox Peak, three of the most well-known peaks in North Bend/the i90 corridor near Seattle. As this was just three big up and down efforts (connected via road running), it changed the effort feel/pacing compared to rolling elevation like my previous races. It also has some very steep, technical portions which slow things materially.
I decided to do a full writeup as it's an interesting, accessible route stitching together three well-known Washington peaks, without many trip reports online. Planning was a (mostly) fun logistics puzzle with many different variables to weigh.
It was my fifth ultra but my first unofficial/non-race backcountry race. I had support via my wife covering the mobile aid station (her car), and friends joining for the first mountain (Si).
Route: No single variation is the "official" route that I am aware of. I chose to do "full send": Doing the class 3 Haystack scramble at the top of Mount Si, Teneriffe via the climber's boothpath (fka Kamikaze trail), and Mailbox via the Old trail. For the latter two I took the new, easier trails down - more mileage but runnable. I also ascended/descended Si and Teneriffe all the way to trailheads to maximize the vert (versus linking them via the ridgeline trail).
I also connected the trailheads on foot via road running. I opted to do this because I wanted to hit the 50k mileage marker and because I liked the style of doing the whole effort on foot (honestly, I also wanted a nice clean Strava map… which is a dumbass reason, I know). I considered biking the connectors but didn't because of the reasons above and also for safety; there are numerous shoulder-less places on the road, blind turns, guardrails, etc and I wanted the option to be able to physically jump out of danger if a car was driving dangerously. In hindsight I would probably just give up the 50k goal and drive between trailheads; the road run didn't feel very safe and wasn't particularly enjoyable.
Peak Order Debate:
I went in circles on this one.
- Mount Si with the haystack - the easiest trail, but the exposed class 3 scramble is the most dangerous/technical part of the whole route. Wet rock scramble could suck, so would be not ideal to do up first if it had rained the previous day. Generally the busiest of the three hikes - a pro and a con.
- Teneriffe - the most consistently difficult ascent (climber's bootpath is notably harder than Mailbox old trail imo), a long but easy descent via the new trail. The least amount of people so less safety margin.
- Mailbox - The last 1,000 feet up the boulder field is the most exposed to weather in my experience of any of the three peaks, I would time this around inclement weather if it's in the forecast.
- Road run - mentally fatiguing due to watching/dodging cars in some sections.
I ended up doing Si first, to get the Haystack out of the way on fresh legs, and to avoid the crowds/mid morning parking lot zoo. Teneriffe next because it's next door less than a mile of road running away (or a slightly longer trail connector), which leaves Mailbox last. I think this is the best order overall though I might reorder based on forecast.
Weather and gear:
Forecast was looking like high 30s and rain/sleet which I was very nervous about, but luckily it improved closer to the day and ended up being beautiful weather. Since it was late in the year, daylight hours were limited so I started and finished in the dark. Cold rain and more wind would have made this a much harder effort and demanded pretty precise layering to mitigate hypothermia risk.
Since it is basically three climbs of 3-4k each vs a rolling course, you can get a pretty wide range of conditions from base to summit, plus you have more time to cook on the ascents and cool down on the descent.
I wore my most breathable base layers and carried a backup rain shell rolled up tight in my pack + a breathable midlayer which I only needed on Mailbox when it got windy up top and colder in the dark on descent.
Mailbox was when I was most fatigued/slowed, was going to be finished in the dark, and had the risk of some potential rain so I swapped into my warmer (and non-sweaty!) merino wool base layer before heading up. Other than that, swapping from trail runners to cushioned road shoes for the road portion, my kit stayed fairly identical all day (I also put on blinking lights on my pack and flashing headlamp on for the road run for visibility, and ditched poles for the road run).
Carried my usual other items - gloves, buff, two headlamps for redundancy, Inreach, emergency blanket. 6 lb pack weight total with water and snacks.
Used my phone a fair amount for navigation and videos and drained battery, so carried my battery bank plugged into it for the road run to have it charged before Mailbox.
Effort summary:
Started up at 6 am on Si. It was very uneventful, though I budgeted time a bit wrong (scramble took longer than expected). Beautiful sunrise/dawn on the haystack. Took it easy on the descent to save quads for the next two mountains. Teneriffe was also pretty uneventful, it was my fastest mountain in 3h40m roundtrip.
I started to feel the fatigue on the road run, I was moving pretty well overall but in blind turns and hills and sketchy road sections I had to run fast to pass through quickly, which spiked my heart rate and was mentally draining. I hopped off the road into the brush at least a dozen times. Drivers were overall pretty considerate though - thanks!
I started Mailbox pretty cooked around 3:45 pm (6 pm sunset), and too nauseous to eat, but pushed on (should have spent a bit longer at the aid station) because I was getting nervous about daylight hours and being solo on the mountain. I came dangerously close to a big bonk partway up Mailbox, forced myself to eat, and gutted out the last 3000 feet quite dizzy and miserable. There was a single hiker behind me who I suspected was the last person on the mountain (she was), so the 'game' I made up in my head was just to keep ahead of her at all costs so that I had a small extra safety buffer - more of a psychological boost than anything. Ended up summiting in 2 hours which in hindsight I think is actually solid for how wiped out I was. The sun started to set right before I summited and once I cleared the boulder field and back into the trees I put on my headlamp for the descent.
Timing was a bit harder to predict in advance, at our slowest I was around 1 mile per hour on the scramble, and at my fastest 9 minute miles on the road. Teneriffe up is especially slow going due to the very rough and steep trail, but had plenty of cruisy sections down.
I am a middle of the pack runner and finished in 13h15m - I am actually pretty proud of that as I ended up finishing withing 5 minutes of when my timing chart predicted. I think a strong runner could easily go sub-12 hours, and then obviously even faster if you skip the road connectors.
Aid station planning:
My lovely wife supported me via car aid station which was a huge help. She also tracked my location - I had my Inreach sending tracks every 10 minutes - to make sure I was on the move. She was planning to do Mailbox with me but had caught a cough the week before and decided not to.
For aid stations I did Si trailhead after Si (in busier months I'd reco doing Teneriffe trailhead as the lot is way less crowded… and better maintained), Si trailhead again from Teneriffe, Mailbox parking lot before Mailbox.
If you don't connect the mountains on foot and drive instead (what I would do if I were to do this again), you don't need support and can self-serve on your car aid stations (versus starting at Si and ending at Mailbox which leaves you in a pickle), as long as you think you'll be OK to drive home after.
Anyway, really cool route/effort that I overall recommend :) I am all ears if you know of other approximately similar linkups in Washington.