Mt. Audubon Duathlon FKT

After doing the Longs Peak Duathlon a few weeks ago, I decided to research other projects for next summer, just in case 2021 happens to be another non-race year due to Covid. Turns out there aren’t many established mountain duathlons, so I might have to create some of my own. But I did happen upon the Audubon Duathlon on the Fastest Known Time website. It starts right here in Boulder at Broadway and Lee Hill and summits Mt. Audubon, which is near Brainard Lake for all you cyclists who have no clue where it is (I didn’t anyways). 

The route: ride up Lee Hill, descend the backside, ride up through Ward to Brainard, and leave the bike behind at the Mitchell Lake trailhead for an eight-mile round-trip run/hike up Mt. Audubon, which has a modest elevation of 13,229 feet. Then you ride back to Boulder of course. Round trip, it’s 52 miles and a little under 9,000 feet of elevation gain. Originally, I figured this would be something for next year, but because of the warm fall we’re having, I realized it could be done sooner, “Like this week!” I thought. “Who needs preparation? I’ll just go for it!” 

The previous FKT stood for 18 years, which led me to assume that it wasn’t a very hotly contested record. Afterall, it’s not even a 14’er, so why bother amIright? But upon further research, I realized that the previous FKT (4:38 set by Kraig Koski in 2002) was actually sort of fast. He rode to the trailhead in 2:05, summiting in a little over one hour, ran down in 35 minutes, and was back in Boulder in just under 60 minutes. Most likely on a road bike with a backpack, pulling a wagon of beats to the market or something (that’s how I assume people back in 2002 made a living). I began wondering if I could even get to the trailhead in under two hours. I mean, I wasn’t confident I’d ever ridden to Ward without stopping to pee once or five times. Has anyone? It’s a pretty long ride to go without peeing.

While I didn’t feel like doing any training for the Duathlon, a few days before I made the attempt, I decided to scout the trail at the very least. But on the damn scouting mission, Adelaide and I ended up hiking to Little Blue Lake (the top lake in the above picture) instead, after setting out on the wrong trailhead. “I thought Mt. Audubon would be a little more mountainous,” I mentioned to Adelaide. So, I was off to a very similar start as my Longs Peak Duathlon attempt—getting lost at the trailhead and never actually summiting until ‘race’ day. 

Thursday, September 24th—I started the FKT attempt nice and early, with an 8:20 AM roll out after two packets of instant cinnamon apple oats, three pieces of toast, and two eggs with sweet chili sauce. As I rode up the base of Lee Hill, I agreed with my past self that I should have done at least some sort of warm up (I live about a quarter mile from Lee Hill and Broadway), but successfully kept my breakfast down and continued grinding away in the 42×28, my smallest gear. I think I made it up and down Lee Hill in around half an hour, which seemed like an okay time. 

My power dropped from there, and I spent the next 30 minutes calculating times in my head, hoping I’d at least beat the mark Megan Roche set to the trailhead (1:59 hours). She just set the women’s FKT a few days prior, and I was sort of blown away at how fast she rode, especially considering that she isn’t a bike racer or triathlete. 

Judging by the headwind I was fighting through Ward, I knew that whatever time I put in today would easily be beatable by my future self on a windless day, which put a dent in my motivation. I think I was looking for a reason to not bury myself, which is why I spent so much time adding numbers in my head instead of just going for it. Anyways, I ended up at the trailhead in an hour and 47 minutes after averaging 284 watts—16 lower than my arbitrary goal of 300. I hopped off the bike, locked it to the trailhead sign post, and tugged on my running shoes before trotting down the trail and fumbling with a bungee cord that I’d forgotten to leave with my bike. 

After stuffing the bungee in my pocket—I’d used it to strap my running shoes to my aerobars during the ride—I set off at a fast walking pace while I tied my windbreaker around my waist. I let out a groan and a curse at how slow the transition was going, then finally set off at a very slow jog. Shit. My legs weren’t working. I could tell straight away that they were tired from getting dropped by Justin the day before on a 10-mile tempo run. My hamstrings and calves already felt trashed and tight, and my quads felt super weak—not good, because I get about 98 percent of my power from my quads. I’m what you call a “non believer” in all the glute activation nonsense. 

Thankfully, the Audubon trail is fairly forgiving, and the FKT requires that you stay on the trail the whole time, unlike the Longs Peak FKT, which is “open course.”  I chugged along like a slow-moving tractor, steadily and letting out nasty exhaust from all ends. I was oddly unable to put myself into threshold due to sheer lack of willpower. But by the halfway-to-the-summit point, I realized I was going to be at the top in roughly one hour (from the trailhead) as long as the terrain didn’t get a lot steeper (it did). 

The one hour goal gave me something to shoot for, and I managed to summit in basically 60 minutes exactly, despite the steep talus in the last half mile. I tagged a pile of rocks at the high point of the flat-topped peak, refused to take in any view whatsoever, and began trotting back down the steep talus section. I took a backwards fall and caught myself with my hands, just barely. My ass didn’t make contact with the ground, so I assume this doesn’t count as a true fall, but I took it conservatively from there on out. Baring a flat tire on the bike, I knew I’d take the FKT pretty comfortably, and my body just wasn’t moving well today. I felt slow and uncoordinated, so I tried to just take it easy, focus on my footing, and not sumersault my way down the mountain.

Back on the bike (after a 38 minute descent), I flew down Brainard road, passing a few cars in the process and zipping through Ward without a moment’s thought of getting water at the faucet. I’d hauled two liters up on the bike and still had a full bike bottle left. Over the next half hour, I set the second fastest Strava KOM descent from Ward over Lee Hill, which must have meant I had a favorable wind because I didn’t do much hard pedaling, save for the backside of the Lee Hill climb. Even as I ground my way up and over Lee Hill, I felt sluggish and unmotivated, knowing that sub four hours wasn’t going to happen, and the old FKT was reachable even if I had to push my bike the rest of the way. 

I stopped the clock at Broadway at 4:10:20, roughly half an hour faster than Kraig’s nearly two decade-long FKT, and coasted home, tired but not blown to pieces like two weeks ago after doing Longs.

This record can easily be chopped to pieces by any strong pro triathlete in town on a good day, especially since Audubon requires no technical scrambling or talus skillz. It’s basically all normal hiking terrain. I’ll give it another shot early next summer and see if I can whittle it down by another half hour, which seems possible considering the half-assed effort I gave. Although, when you’re sitting on the couch writing a blog, it’s hard to remember what the effort really felt like. In retrospect it seemed easy. In reality, I’m sure it hurt. I guess that’s like a lot of races. You almost always look back and feel like you could have given a bit more. Maybe that’s life in general: you look back on even your finest accomplishments with shame, and regret the chances you never took. Or maybe that’s the way a try-hard ends a blog post: searching desperately for deep meaning—a concise one-liner that makes you seem wise and thoughtful—when, of course, there is no such meaning to be found.

Longs Peak Duathlon FKT

With Covid putting a quick end to the race season this year, I chose to focus on writing a novel or two instead of continuing to train. I did, however, manage to put in eight to 14 hours of training a week, for sanity’s sake, and came up with the goal of setting a new FKT (Fastest Known Time) for the Long’s Peak Duathlon, which involves riding 38 miles from Boulder up to the trailhead at 9.2K feet, summiting and descending Longs Peak (a 14er), and riding back to Boulder. I’d heard of this ‘event’ a number of years ago, and always thought it would be cool to do, but with racing, it just never made sense to attempt it. Now that my first manuscript is mostly completed, though I’m sure it needs a fourth round of editing, I decided to spend the previous couple weeks getting in passable shape to give the Duathlon a shot. I did a few four hour rides a few weeks ago, finally built my A-Squared TT bike up last week, then began scouting Longs for the route I was planning to take (the Cables route, which involves a pitch of class 5 scrambling).

The previous fastest time (6:55) was set a month ago by mountain runner Anton Krupicka, who beat his own previous fastest time of 7:05 from a few years ago. The following is just my report that I submitted to the Fastest Known Time website. If the writing sounds off, it’s because I rushed through it—aspiring novelists (and law blog writers) have to save their best writing for The Work.

My brother Galen, taken five or six weeks ago when he and Ryan and I did the Glacier Gorge Traverse, which kicked my ass like no other. 22 miles and 12K feet of elevation gain, with a ton of class 5 scrambling and a few extra sub peaks thrown in for fun. Galen left me for dead in the last six miles, and I limped in solo after Ryan cruely chose to do the same. This day deserves its own blog post, but alas, my novel writing and editing is getting in the way of personal blog writing. And my work blog writing too actually.


My total time for the Longs Peak Duathlon was 6:23:56 to and from the Boulder city limit sign. I didn’t take any other interval time checks, so the following times are plus or minus a handful of seconds each.

Bike up—2:11 and change
Transition #1—2 minutes
Run up—1:48:11
Run down—1:01:45
Transition#2—2 minutes
Bike back—1:18 ish

Started out late in the morning (8:00AM) with tired legs, and worries the Cables route was going to be iced over again. This was the third attempt I’ve done going up Cables. I didn’t make it up the other two times due to thick ice. Since snow and cold weather was predicted for the next day, I decided that if I was going to have a chance at even trying the Duathlon, it would have to be today.

I made it to Lyons in a little over 23 minutes, feeling okay but not great. Riding is my strong suit, but because of Covid I’ve done very little training this year. By the Peak to Peak intersection on St. Vrain, I was pretty upset with my time (1:25 I believe). I’d averaged 275 watts by that point, and was already feeling pretty bad. I was hoping to hit the Peak to Peak intersection at around 1:15, but the headwind and my legs weren’t cooperating. 

The new steed, ridden a grand total of two times this year (okay, so I just had it built up by Gav the Mechanic last week).

The wind grew worse as I climbed. By Allenspark, it was gusting at 30+ miles an hour, and I actually had to pedal down some of the steep hills to keep my speed up. I was considering pulling the plug on the entire attempt at this point because I knew I needed to make up an hour or so on Anton’s bike splits to be in contention for the FKT, and the wind seemed to have other plans in store. 

I got to the trailhead tired, defeated, and pissed off, but I had a fast transition time so decided to see if I could at least make it to the top of Longs for the first time on Cables (I’ve summited twice on Keyhole).

I finally figured out where the shortcut goat trail is, and took that up. Two climbers who I passed said that Cables was mostly clear of ice, but to be careful of the wind. I wasn’t sure what that meant, and continued trudging up the goat trail and hoping that I was going the right way. During my eight days of training for this, I got extremely lost twice taking short cuts while trying to figure out how Kyle Richardson and Anton Krupicka get up the mountain so incredibly fast (other than just pure athleticism and skill). My brother Galen, who’s a climber, put together an excellent PowerPoint presentation that gave step by step directions on the fastest route for me the other week, but each time I still managed to get lost. But not this time!

I trudged up the mountain with lead legs and fought 50 mile an hour wind gusts, yelling at the wind in frustration and having to hike most of it instead of run. But I made it to the base of Cables in 91 minutes—not bad for me, considering the conditions and how tired I was from doing the Keyhole the day before. I was happy to see two climbers rappelling down, thinking I could grab onto their rope if I slipped. Just kidding. They said the same thing as the other climbers near the trailhead—there was minimal ice. I slowed down and took a few deep breaths as I began climbing since I was super dizzy and breathing like a 90-year-old caged lion with asthma.

Because there was very little ice, climbing the Cables was a breeze. In fact, I realized that the previous time I attempted the Cables, I had essentially made it past the crux but didn’t realize it. I’d been a bit sketched out about having to do another pitch of what I’d just done, and I wasn’t excited about downclimbing with wet, slippery shoes.

I got a bit mixed up route finding to the top of Longs after I finished the Cables, but figured it out without too big of an issue and without losing more than a minute or two. I quickly texted my wife Adelaide at the top to let her know I was okay, then turned around without taking in the beautiful brown sky view that pretty much stopped at Mt. Lady Washington. The smoke was getting really bad at that point.

Descending the Cables was easy because, over the last week, I got used to descending on the outside of the crack, away from the ice. Because it was clear this time, it felt super secure. The two climbers that had rappelled down snapped a quick picture for me near the bottom (and later emailed it) and I made it through the Boulder field pretty fast.

Coming off the Cables (not pictured). Photo credit: Will Rosenburg

With the massive headwind that I’d been battling on the way up the mountain now pushing me down, I felt like I was flying at points. I’d never tried running down the mountain before because I’ve been nursing a bum knee all summer, but my footing was good and I didn’t take any spills, choosing caution over courage because at this point, I was getting confident that I’d set a new best time. 

I did get a bit turned around going through the Battle Mountain area and took a different trail than I did on the way up, but I ended up popping out unscathed, and I still hadn’t fallen (though I came close a few times). I flew down the normal trail and briefly got confused trying to find the turn after Goblin. Not to worry though, I found it shortly after, then greedily chugged water at the creek. I rolled both ankles in the next five minutes, made it to the big drain pipes at the bottom (chugged more water and filled my hand-held bottle again) and was on the bike after a two minute transition.

I gave a few hoots of joy ripping down the access road, knowing that, barring a flat tire or two, I was going to take the FKT. Then I felt that gut-dropping squishy feeling in my wheels. Shit, I do have a flat! I bounced both wheels up and down for the next half hour, paranoid that I had a slow leak, but it all ended up just being in my mind.

The descent down St. Vrain was fast and the wind was swirling like crazy. A few cars held me up briefly, but luckily they were speeding like everyone seems to do these days (the only time I ever condone a car speeding is when it’s currently slowing me down on a descent while I’m riding). I made it through Lyons and onto 36 with plenty of time to spare. Just under six hours I believe. 

I set a goal of coming in at under six and a half hours, just for something to focus on, as I was now dying a slow death of dehydration. It was around 90 degrees at that point, and I had a single sip of water left. As the minutes wore on, I felt sicker and sicker, groaning from the heat and thirst. I was still pushing out good power, and the wind was minimal, so I had no excuses, though I did coast a few times unnecessarily. I mainly made it through those last 20 minute by shaming myself for being weak and fragile and afraid of pain, and finally got through the Boulder city limit finish line in just under 6:24. At home, it took two hours before I could eat anything—I hadn’t been that dehydrated for years. 

Next summer I plan to give this another crack. With some good fitness, better trail knowledge, and perfect wind conditions, I think I can go under six hours. Possibly under 5:45 if I’m in race shape. A huge shout out goes to Anton, who has helped pave the way for this super cool event, and who set a high bar earlier this summer. 


This was taken back in May. It has nothing to do with the Duathlon. I just like it because LOOK HOW SKINNY MY ARMS APPEAR TO BE!

Photo credit: Galen Peterson

Adelaide, Maybellene, and I did an 18-mile hike last week to Gibraltar Lake while camping at Peaceful Valley. This also has nothing to do with the Duathlon, but it was a super fun hike! This summer has been, by far, the most time I’ve spent hiking and roaming the mountains. It’s been a lot of fun, but I do miss the regimented, monotonous, grueling swim-bike-run training and feeling super fit. I guess above all (at least when it comes to the athlete lifestyle anyways) I miss competition and a reason to destroy myself during intervals. Sigh. 2021?