C Mantz Running

Deseret News Half Marathon

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Member Since:

May 18, 2010



Goal Type:

NCAA Champ

Running Accomplishments:

Pre-high school: I ran a lot of local 5ks and a few half marathons.  I didn't do a ton of training, but I just had fun, and I got more serious about it as high school got closer.

High school: I enjoyed running a lot, especially cross country.  I originally did track to keep my in shape for cross country.  I ran at Footlocker Nationals, the Adidas Dream mile, Brooks PR Invitational, world xc junior championships, and a few local 5ks. 

PRs: 800: 1:56.80-State Track 2014

1600: 4:10-State Track 2014/Mile: Sea Level-Adidas Grand Prix-4:07

3200:Alititude(~4500ft): 8:57.99-State Track 2014-2 Mile:8:53 at Brooks PR Invitational

5K: New Balance Indoor Nationals(2014) - 14:24

10K:USA Junior Track Championships (2014)-31:01

15K: Blacksmith Fork Freedom Run (aided) 48:10(2013).

Half Marathon: 
Utah Valley Half - 1:11:24(aided)(2012)



3k-7:50 at dr. Sander Invitational and MPSF



NCAA finishes:

Cross Country: 10th(2018);

Indoor: 3k-7th(2019) 5k-10th(2019);

Outdoor: 10k-22nd(2018), 4th(2019), 5k-7th(2019)

Long-Term Running Goals:

Make sure I have fun, not get burned out, and get faster.

Eventually get the school records in the 5km and 10km.  


Served a mission for The Church of Jesus Christ of Latter-Day Saints from July 2015-July 2017.  I gained 30 lbs. during the service and came back out of shape; however I knew that if the Lord wanted me to once again run competitively, he would bless me to return to fitness. 

I graduated from Sky View High School in Smithfield, Utah. I currently run for Brigham Young University in Provo, Utah.  

Favorite Blogs:

Miles:This week: 0.00 Month: 0.00 Year: 0.00
Race: Deseret News Half Marathon (13.109 Miles) 01:05:08, Place overall: 2, Place in age division: 2
Total Distance

I came to Salt Lake City yesterday with Weston, and then stayed the night. Woke up early(4AM), ate some fruits snacks and a granola bar, then we drove over.  I dropped Weston off at the 10k start line and then drove to the busses that drove us to the top.   About 15 minutes before the race I went for a short warm up up the canyon and then came down.  I felt pretty good, not ready for an all out race, but decent.  When I talked to Coach Eyestone about running this race, he said to treat it like a long run, and I asked if I could run it at 5 flat pace, and he said that would be good. I was pretty nervous going into the race though, becuase the fastest mile I've run since nationals was 5:40 and now I was trying to run 13 miles 40 seconds faster. Then the race started.  

I knew if I wanted to run 5 flat pace, I should run with Brett Hales and Riley Cook.  Well, the first mile was out of my comfort zone for sure.  It is pretty downhill, but usually I work into races like this as they're long.  Well, they didn't.  That first mil was hard, and then after going through the second and seeing we were at about 9:25, I asked them what time they were going for.  They said 1:04-05, so I thought that maybe if I was going to run 5:00 pace, maybe I'd just put a bit in the bank.  I was feeling pretty good at 3 miles into it and it felt like we were just cruising, however I had new shoes I was trying out and they were hurting my feet.  I was a bit scared of getting an injury, but gambled it and kept going.  At mile 4, Riley seemed to speed it up, and Brett fell off.  After another half mile, I also fell off. I could've stayed with him here, but made a conscious decision to slow it down, and if I'm close to Riley with 5k to go(when it gets flat), then I'll go for it to catch him, I didn't want to overdo it and have this race put me out for a few days.  Slowly he built a small gap on me from miles 5-7.  I felt pretty good during these portions of the race.  At one point I heard Garrett Barton call out and tell me to catch him, so that gave me some encouragement.  I came through 10km somwhere around 29:30 and halfway around 31:10 I think.  I thought at this point I may have overdone it and gone out too hard, but I felt good.  At mile 8 I started to feel fatigued, and that was about the same time I stopped thinking about my feet hurting.  

The next few miles felt like they went on forever.  I knew I was going to run a good time, but was feeling pretty tired. It's been a long time since I've ran a race this long and it was hard to focus.  After mile 8 I started passing people, and I wasted some energy weeving through people.  I should've just focused on getting to one side of the path and staying on it.  The last few miles were hard to push, I was tired and it took a while for me to set a goal for the next few miles.  I decided to try and go 1:05 and that seemed doable.  With 2 miles to go, it seemed that I needed to run 10:30 for them and I'd do it.  Well, my watch started to get a bit off the distance the mile markers were, so when I thought I had it at the end I cruised it in.  

It was a good effor tthough for the day.  I believe I can go faster, but it might take better preparation, mentally and physically; however I do think that I underestimated how hard it would be to run 65 minutes even on this course(the majority of the course is considerably downhill), and I think I paid the price as it took more out of me.  I don't know if Coach will allow me to run another during the next few years, but it was a fun experience.  I'm excited for cross country even more.  

Mile splits according to my watch: 4:39, 4:47, 4:48, 4:42, 4:48, 4:48, 4:43, 5:09, 5:00, 5:08, 5:15, 5:10, 5:18, 49 for the last .16(watch said it was .16, but it was likely just the extra I was weeving through people the last 4 miles).  

From Shawn H on Tue, Jul 24, 2018 at 20:20:47 from

Nice run, Conner. I think that, just like your coach, you'll be an excellent marathon runner in the future. Cross country is your real love right now, though, and it'll be fun watching your progress in a few months.

From Russ on Fri, Jul 27, 2018 at 13:37:51 from

Great effort, fun to read your race report. Nice job with 2nd place in a competitive race when this was meant to be a "long run". Fun to watch you do great things. And super nice 'stache.


From Sasha Pachev on Sat, Aug 18, 2018 at 14:17:31 from

Conner - for your a downhill half is an interesting beast at this point. There are two limits of running performance - power and impact tolerance. 5:00 pace down Desnews grade is not going to challenge your power, but it is 5:00 pace for 13 miles, so you have to absorb it impact-wise regardless of which way it goes, up, down, or flat. This was a good introduction to the concept. As your impact tolerance goes up, a lot of things improve - you can race more frequently, you do not get injured, you can train harder and recover well, and as a result of all things combined you get faster. One advantage you have that will allow you to cash out on improved impact tolerance is that you have a lot of power. My problem was that while my impact tolerance was great (and is still decent even at 45), I did not have the power to push its limits.

Regarding the GPS, I do not think it is accurate enough to properly account for the swerving, but I can definitely see how when you swerve it would mess up its distance calculation algorithm. GPS signal in all truth does not have enough precision for accurate distance calculations. But if you throw in some correction logic - e.g. a runner likely will not be going 100 meters forward followed by 5 meters backwards, zigzag across the street in awfully weird patterns, alternate the speed between 4:00 and 8:00 in erratic patterns, etc, then you can get an appearance of accurate distance calculation - which often backfires. Knowing that the distance is only pretend accurate has bugged me enough that I stopped using GPS for distance altogether, and now just use landmarks measuring the distance with a wheel or when travelling with a Google map if I really care. Or for easy runs just go by time and approximate the distance from that.

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