All Results|Race Analytics|Course|Contact
SHAMROCK MARATHON 2025

Grant Heuer

Bib: 454•M•Age: 42

Iowa City, IA

Shamrock Marathon logo
0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 1949
Gender (Male)
#0 / 1153
Masters (Masters Men)
#0 / 398
Age Group (M40-44)
Official
#0 / 120
Calculated (M40-44)
#0 / 120
Race Day Weather
71°/61°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
38:45
3.11 mi
Rank: #1838
Start → 5K
38:45 | 12:29/mi
10K
1:23:41
6.21 mi
Rank: #1902 (-64)
5K → 10K
44:56 | 14:28/mi
15K
2:10:20
9.32 mi
Rank: #1917 (-15)
10K → 15K
46:39 | 15:01/mi
20K
2:58:24
12.43 mi
Rank: #1923 (-6)
15K → 20K
48:04 | 15:29/mi
Half
3:08:55
13.10 mi
Rank: #1914 (+9)
20K → Half
10:31 | 15:41/mi
25K
3:48:02
15.53 mi
Rank: #1920 (-6)
Half → 25K
39:07 | 16:04/mi
30K
4:31:04
18.64 mi
Rank: #1920
25K → 30K
43:02 | 13:52/mi
35K
5:29:59
21.75 mi
Rank: #1922 (-2)
30K → 35K
58:55 | 18:58/mi
25.2M
6:26:38
25.20 mi
Rank: #1920 (+2)
35K → 25.2M
56:39 | 16:25/mi
Finish
6:41:47
26.22 mi
Rank: #1919 (+1)
25.2M → Finish
15:09 | 14:53/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time3:08:55
Pace14:26 /mi
2nd Half
Distance13.12 mi
Time3:32:52
Pace16:14 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:23:0438:4512:2938:45
12:29
-
10K
6.21 mi09:08:001:23:4113:2944:56
14:28
+1:59
15K
9.32 mi09:54:392:10:2014:0046:39
15:01
+0:33
20K
12.43 mi10:42:432:58:2414:2248:04
15:29
+0:28
Half
13.10 mi10:53:143:08:5514:2610:31
15:41
+0:12
25K
15.53 mi11:32:213:48:0214:4139:07
16:04
+0:23
30K
18.64 mi12:15:234:31:0414:3343:02
13:52
-2:12
35K
21.75 mi13:14:185:29:5915:1158:55
18:58
+5:06
25.2M
25.20 mi14:10:576:26:3815:2156:39
16:25
-2:33
Finish
26.22 mi14:26:066:41:4715:2115:09
14:53
-1:32

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

12:29 /mi

Average Pace

15:20 /mi

Slowest Pace

18:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:06:43

32% of race

Time at Steady Pace

2:39:30

40% of race

Time at Slower Pace

1:55:34

29% of race

Average Pace: 15:19 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi08:23:0438:4512:2938:45
12:29
#1838
10K
6.21 mi09:08:001:23:4113:2944:56
14:28
#1902
15K
9.32 mi09:54:392:10:2014:0046:39
15:01
#1917
20K
12.43 mi10:42:432:58:2414:2248:04
15:29
#1923
Half
13.10 mi10:53:143:08:5514:2610:31
15:41
#1914
25K
15.53 mi11:32:213:48:0214:4139:07
16:04
#1920
30K
18.64 mi12:15:234:31:0414:3343:02
13:52
#1920
35K
21.75 mi13:14:185:29:5915:1158:55
18:58
#1922
25.2M
25.20 mi14:10:576:26:3815:2156:39
16:25
#1920
Finish
26.22 mi14:26:066:41:4715:2115:09
14:53
#1919
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi183811091131926(Top 99%)1143(Top 99%)117(Top 98%)
10K6.21 mi3.10 mi1902-641136-27116-31920(Top 99%)1141(Top 99%)116(Top 97%)
15K9.32 mi3.11 mi1917-151140-41161926(Top 99%)1143(Top 99%)117(Top 98%)
20K12.43 mi3.11 mi1923-61141-11161927(Top 99%)1142(Top 99%)117(Top 98%)
Half13.10 mi0.67 mi1914+91135+6115+11887(Top 97%)1120(Top 97%)113(Top 94%)
25K15.53 mi2.43 mi1920-61139-41151902(Top 98%)1123(Top 97%)114(Top 95%)
30K18.64 mi3.11 mi19201140-1116-11863(Top 96%)1110(Top 96%)111(Top 93%)
35K21.75 mi3.11 mi1922-21140117-11884(Top 97%)1118(Top 97%)116(Top 97%)
25.2M25.20 mi3.45 mi1920+21140116+11854(Top 95%)1101(Top 95%)113(Top 94%)
Finish26.22 mi1.02 mi1919+111401161852(Top 95%)1096(Top 95%)110(Top 92%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×1
+26ft-31ft

Overall

1926

Males

1143

M40-44

117

5K→10K

3.1 - 6.2 mi

Top 99%
×2
+38ft-17ft

Overall

1920

Males

1141

M40-44

116

10K→15K

6.2 - 9.3 mi

Top 99%
×2
+26ft-44ft

Overall

1926

Males

1143

M40-44

117

15K→20K

9.3 - 12.4 mi

Top 99%
×1
+35ft-22ft

Overall

1927

Males

1142

M40-44

117

20K→Half

12.4 - 13.1 mi

Top 97%
×1
+7ft-13ft

Overall

1887

Males

1120

M40-44

113

Half→25K

13.1 - 15.5 mi

Top 98%
×2
+48ft-19ft

Overall

1902

Males

1123

M40-44

114

25K→30K

15.5 - 18.6 mi

Top 96%
×2
+38ft-52ft

Overall

1863

Males

1110

M40-44

111

30K→35K

18.6 - 21.8 mi

Top 97%
×2
+39ft-39ft

Overall

1884

Males

1118

M40-44

116

35K→25.2M

21.8 - 25.2 mi

Top 95%
×3
+57ft-58ft

Overall

1854

Males

1101

M40-44

113

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×1
+17ft-12ft

Overall

1852

Males

1096

M40-44

110

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
24
Passed By
105
Net Change
-81
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1838
5K → 10K165-64#1838#1902
10K → 15K116-15#1902#1917
15K → 20K17-6#1917#1923
20K → Half90+9#1923#1914
Half → 25K39-6#1914#1920
25K → 30K220#1920#1920
30K → 35K24-2#1920#1922
35K → 25.2M42+2#1922#1920
25.2M → Finish10+1#1920#1919
TOTALS24105-81
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Qualifying & Age Grade

See how your performance stacks up against qualifying standards

BQ

Boston Qualifying analysis available

Finisher Certificate

Download and share your official race completion certificate

🏆 Finisher Certificate
Download or share your official race finisher certificate
Loading certificate...

Your certificate is generated on-demand and can be shared on social media or saved for your records

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management