At 3:55pm yesterday I cried.

I was getting ready for a Google Hangout back to my office with my partners and I noticed something about an explosion at the Boston Marathon on twitter. I did a quick scan of Twitter, clicked through to a few links, and realized a bomb had gone off near the finish line.

I went blank – just stared at my computer screen – and then started crying. I called Amy – she hadn’t heard about it yet and told her what had happened. I collected myself and called in to my Hangout. My partners were all shaken also – Seth lived in Boston for many years, Ryan has done several marathons, and Jason just did his first marathon last year in Detroit.

During our Hangout I sent some emails out to friends in Boston. Four close friends were on the third floor of the building above the first explosion. They were ok – but shocked and very shaken up. Emails continued to flow with me checking in on people and people checking in on me since they knew I was a marathoner and on the east coast.

My emotion shifted from sadness, to a wave of being horrified, to temporary anger, back to a very deep sadness. At the NJ Tech Meetup, before I started talking I asked for a moment of silence to recognize the people who were at the Boston Marathon, especially those who were injured. I can’t remember exactly what I said – I just know that I teared up again before my talk.

On my way back to Manhattan, Amy and I talked. We were both incredibly sad. And lonely – she’s home and I’m in NY. She was supposed to go to Boston yesterday for a Wellesley board meeting – she decided not to go because of some stuff going on. She would have stayed at the Mandarin Oriental, just down the block from the explosion. It’s all too close for comfort.

Lying in bed, I couldn’t fall asleep. I tossed and turned until 1am. I kept thinking about being in NY on 9/11, about running the Boston Marathon, about the bike accident I had in September where a turn of the wheel a different direction would have meant lights out for me. It was some combination of PTSD, sadness, obsessions, and contemplation of mortality. I finally fell asleep.

This morning on my run with Reece Pacheco we talked about it a little more. I haven’t even begun to really process this. Brent Hill sent out a tweet to me and a bunch of friends to commit to running Boston in 2014. I’m in.

I just contributed to the Boston Tech Communities fundraiser for the Boston Marathon victims. All proceeds will be donated completely to programs working with victims of the attacks including Red Cross, Children’s Hospital, and others.

Ever since I did the American River 50 Mile Endurance Run I’ve been fascinated with ultramarathons. After struggling through the emotional fallout of the six weeks after the race, I decided that for now I’m sticking to marathons given my work schedule and general life tempo, but I’m still completely intrigued by them and the people who do them.

A few months I watched the movie Unbreakable: The Western States 100 - it gave me chills and was hugely inspiring. A few minutes ago I watched the trailer for Finding Traction.

Wow – this is going to be an amazing movie. Nikki Kimball totally blows me away.

If you are into this stuff, go support the Indiegogo campaign for Finding Traction and help the film become a reality!

Marathon #23 is complete. On Sunday, I finished the Detroit Marathon in 4:41:39. The two smiling faces next to me in the picture are Matt Shobe, who I’ve now done three marathons with, and my running coach Gary Ditsch. They ran with me in Detroit and it was super helpful to have them.

The most exciting thing for me about the Detroit Marathon was that my partner Jason Mendelson completed his first marathon! The whole notion of this is pretty awesome as Jason had major hip surgery eighteen months ago. It was brave of him to take on the training for this and powerful that he got it done.

We had a big party – Becky Cooper, Ryan McIntyre, and Jill Spruiel from Foundry Group also ran Detroit, as did Andrew Tschesnok of Organic Motion, my long time friend Warren Katz (this is his second marathon), and a few other friends.

The day was perfect for a marathon – sunny and cool. I had very low expectations for myself – my goal was simply to finish. I haven’t run much at all since my bike accident in Slovenia in early September and my ribs and left elbow still hurt a little. While I’d done a couple of 10 mile runs, I think I’d run a total of five times since I got back. So my goal was to rely on muscle memory and just get through 26.2 miles.

Matt, Gary, and I went out slow – doing a 2:26 pace for the first half. We were probably on a 2:30 pace through 10 but then picked it up a little after we got through the mile long tunnel that connects Canada and the US. One of the interesting features of the marathon is that miles 4 through 7 are in Windsor Canada – you head from Detroit to Canada over the Ambassador Bridge and then come back to Detroit via the tunnel between the two cities. As a bonus, I learned that South Detroit is actually Windsor, although my guess is that the people of Windsor refer to Detroit as North Windsor.

I turned my left ankle heading into the tunnel and was nervous for about a half a mile but it was fine. I was also claustrophobic in the tunnel – I really hate running in enclosed spaces for any length of time. But we started to cruise once we got back on America soil.

I did the second half in 2:15:13 – another solid negative split.We had been using an 8:2 run:walk pattern up to about 20 and then shifted to 9:1 for the balance. There was a point were I thought we had 4:39 in our sites but we just couldn’t quite make up enough time. But given that my goal was to finish, it was very satisfying to turn in another sub 4:45 marathon.

I had a blast in Detroit from Friday until I left on Tuesday. I spent all day Monday with entrepreneurs and the activity in the core of Detroit around the emerging Detroit Startup Community is really exciting. Look for a longer post on Startup Revolution from me in the next few days about my thoughts on what’s going on there.

If you see Jason this week, give him a high five for his amazing achievement.

When I started Retrofit last fall, I weighed 216. I’ve struggled for a decade to get below 210 – it would happen sometimes but I’d quickly end back up in the 210 – 220 range. I ran marathons so this was frustrating – I am a pescatarian and eat healthy, just too much.

I started Retrofit and within three months was down to 200. I’ve been between 195 and 200 for the past six months and have a clear understanding of how to be at 195 by simply cutting out a few things for a few weeks. My running has improved by a minute a mile, I’ve dropped from a 38 waist to a 36 waist (and could probably pull off a 34), and feel so much better.

If your have been struggling to lose weight for a long time, give Retrofit a try. It’s not a diet, it’s a complete and total reprogramming of the way you think about food. The founder Jeff Hyman is a long time friend (I was a seed investor in his first company in 1996) and is incredibly passionate about Retrofit and what he and his team is doing. I’m not an investor (it’s outside our themes), but I’m a huge supporter of Jeff and Retrofit – it’s been amazing for me as a customer.

Following is a short video that will start appearing on national TV in the next month. I’m honored to be part of it with David Cohen, the CEO of TechStars, who has lost over 30 pounds (and looks awesome) since starting Retrofit at about the same time as me.

While I feel like the guy on late night TV some times, this experience has been transformational. Seriously, take a look. I can’t rave enough about what Retrofit has done for me.

Last night Amy and I watched the movie Unbreakable: The Western States 100. Our friends Pam and Mark Solon gave it to us. It was awesome, powerful, riveting, and inspirational. If you are a long distance runner, or athlete of any kind, you will love it. More after the trailer below.

While my experience with marathons is now extensive (22 to date), my experience with ultras is limited to one – the American River 50. I learned an enormous amount from my ultra – mostly about myself – and wrote about it twice – two weeks after the race in a post titled The Physiological And Emotional Fallout Of My 50 Mile Race and then six weeks later in a post titled I’m Finally Recovered From My 50 Mile Run.

While I’d love to try another 50 and even do a 100 miler, I’ve decided that it’s just not realistic or healthy (emotionally) for me given my current work and travel dynamics. I’m comfortable with that decision and have doubled down on the marathon running while tossing in some road biking (today’s ride will be 35 miles, the longest to date) for variety  and mostly to amuse my partner Seth.

It was extremely powerful and motivating to watch this movie. The Western States 100 is the original ultramarathon that was first run by  Gordy Ainsleigh in 1974 (he’s in the movie – and he is awesome.) There are four main characters in the race that the movie follows.

• Hal Koerner, two time defending Western States champion, and running store entrepreneur from Ashland, Oregon.
• Geoff Roes, undefeated at the 100-mile distance, an organic chef from Juneau, Alaska.
• Anton Krupicka, undefeated in every ultramarathon he has ever started, a graduate student living in Boulder, Colorado.
• Kilian Jornet, the young mountain runner and two time Ultra-trail du Mont-Blanc champion, from Spain.

Four amazing ultra runners (two undefeated) going after the win and a world record from the very beginning of the race. The movie does a great job of mixing drama with personality with footage of the race. While I don’t know any of the runners, I’ve been passed by Krupicka running in the mountains in Boulder (he’s easy to recognize) and I related to different parts of each of their stories.

As I look out my window in Keystone this morning I see a beautiful blue sky with a layer of fog in the meadow behind my house. The mountains are in the background. While I’ll be on a bike today getting ready for a week long bike trip (my first) the love that these four guys have for running will echo in my mind. When people ask me why I run marathons, it’s easy – I love to run. So do they. Watch the movie and be inspired.