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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Zachary Golden

Bib: 685 •M •Age: 37

Arlington, VA

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Top 7%
Gender (Male)
#0 / 1153
Top 9%
Age Group (M35-39)
Official
#0 / 178
Calculated (M35-39)
#0 / 178
Top 11%
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
21:48
3.11 mi
Rank: #119
Start → 5K
21:48 | 7:02/mi
10K
44:54
6.21 mi
Rank: #136 (-17)
5K → 10K
23:06 | 7:27/mi
15K
1:07:52
9.32 mi
Rank: #152 (-16)
10K → 15K
22:58 | 7:24/mi
20K
1:30:35
12.43 mi
Rank: #152
15K → 20K
22:43 | 7:19/mi
Half
1:35:43
13.10 mi
Rank: #149 (+3)
20K → Half
5:08 | 7:39/mi
25K
1:53:52
15.53 mi
Rank: #148 (+1)
Half → 25K
18:09 | 7:28/mi
30K
2:14:13
18.64 mi
Rank: #142 (+6)
25K → 30K
20:21 | 6:34/mi
35K
2:40:35
21.75 mi
Rank: #134 (+8)
30K → 35K
26:22 | 8:30/mi
25.2M
3:07:26
25.20 mi
Rank: #128 (+6)
35K → 25.2M
26:51 | 7:47/mi
Finish
3:14:50
26.22 mi
Rank: #129 (-1)
25.2M → Finish
7:24 | 7:16/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time1:35:43
Pace7:19 /mi
2nd Half
Distance13.12 mi
Time1:39:07
Pace7:34 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi07:53:5321:487:0221:48
7:02
-
10K
6.21 mi08:16:5944:547:1423:06
7:27
+0:25
15K
9.32 mi08:39:571:07:527:1722:58
7:24
-0:03
20K
12.43 mi09:02:401:30:357:1822:43
7:19
-0:05
Half
13.10 mi09:07:481:35:437:195:08
7:39
+0:20
25K
15.53 mi09:25:571:53:527:2018:09
7:28
-0:11
30K
18.64 mi09:46:182:14:137:1320:21
6:34
-0:54
35K
21.75 mi10:12:402:40:357:2426:22
8:30
+1:56
25.2M
25.20 mi10:39:313:07:267:2726:51
7:47
-0:43
Finish
26.22 mi10:46:553:14:507:277:24
7:16
-0:31

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

6:34 /mi

Average Pace

7:26 /mi

Slowest Pace

8:30 /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

42:09

22% of race

Time at Steady Pace

1:39:28

51% of race

Time at Slower Pace

53:13

27% of race

Average Pace: 7:26 /mi

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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 mi07:53:5321:487:0221:48
7:02
#119
10K
6.21 mi08:16:5944:547:1423:06
7:27
#136
15K
9.32 mi08:39:571:07:527:1722:58
7:24
#152
20K
12.43 mi09:02:401:30:357:1822:43
7:19
#152
Half
13.10 mi09:07:481:35:437:195:08
7:39
#149
25K
15.53 mi09:25:571:53:527:2018:09
7:28
#148
30K
18.64 mi09:46:182:14:137:1320:21
6:34
#142
35K
21.75 mi10:12:402:40:357:2426:22
8:30
#134
25.2M
25.20 mi10:39:313:07:267:2726:51
7:47
#128
Finish
26.22 mi10:46:553:14:507:277:24
7:16
#129
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM35-39Seg. OverallSeg. MalesSeg. M35-39
5K3.11 mi3.11 mi11910420159(Top 8%)131(Top 11%)22(Top 12%)
10K6.21 mi3.10 mi136-17118-1421-1176(Top 9%)145(Top 13%)23(Top 13%)
15K9.32 mi3.11 mi152-16131-1321159(Top 8%)131(Top 11%)22(Top 12%)
20K12.43 mi3.11 mi15213121162(Top 8%)136(Top 12%)21(Top 12%)
Half13.10 mi0.67 mi149+3128+321112(Top 6%)100(Top 9%)19(Top 11%)
25K15.53 mi2.43 mi148+1126+221135(Top 7%)116(Top 10%)20(Top 11%)
30K18.64 mi3.11 mi142+6123+321135(Top 7%)114(Top 10%)20(Top 11%)
35K21.75 mi3.11 mi134+8116+720+1136(Top 7%)111(Top 10%)21(Top 12%)
25.2M25.20 mi3.45 mi128+6110+620114(Top 6%)92(Top 8%)16(Top 9%)
Finish26.22 mi1.02 mi129-1109+120122(Top 6%)98(Top 8%)16(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×1
+26ft-31ft

Overall

159

Males

131

M35-39

22

5K→10K

3.1 - 6.2 mi

Top 9%
×2
+38ft-17ft

Overall

176

Males

145

M35-39

23

10K→15K

6.2 - 9.3 mi

Top 8%
×2
+26ft-44ft

Overall

159

Males

131

M35-39

22

15K→20K

9.3 - 12.4 mi

Top 8%
×1
+35ft-22ft

Overall

162

Males

136

M35-39

21

20K→Half

12.4 - 13.1 mi

Top 6%
×1
+7ft-13ft

Overall

112

Males

100

M35-39

19

Half→25K

13.1 - 15.5 mi

Top 7%
×2
+48ft-19ft

Overall

135

Males

116

M35-39

20

25K→30K

15.5 - 18.6 mi

Top 7%
×2
+38ft-52ft

Overall

135

Males

114

M35-39

20

30K→35K

18.6 - 21.8 mi

Top 7%
×2
+39ft-39ft

Overall

136

Males

111

M35-39

21

35K→25.2M

21.8 - 25.2 mi

Top 6%
×3
+57ft-58ft

Overall

114

Males

92

M35-39

16

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×1
+17ft-12ft

Overall

122

Males

98

M35-39

16

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
36
Passed By
46
Net Change
-10
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#119
5K → 10K219-17#119#136
10K → 15K016-16#136#152
15K → 20K220#152#152
20K → Half30+3#152#149
Half → 25K43+1#149#148
25K → 30K71+6#148#142
30K → 35K102+8#142#134
35K → 25.2M71+6#134#128
25.2M → Finish12-1#128#129
TOTALS3646-10
📊

Passing Analysis Visualizations

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

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

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
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