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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Shannon Nelson

Bib: 2863 •F •Age: 30

Chesapeake, VA

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Gender (Female)
#0 / 791
Age Group (F30-34)
#0 / 104
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
36:56
3.11 mi
Rank: #1763
Start → 5K
36:56 | 11:54/mi
10K
1:19:06
6.21 mi
Rank: #1850 (-87)
5K → 10K
42:10 | 13:35/mi
15K
2:03:03
9.32 mi
Rank: #1886 (-36)
10K → 15K
43:57 | 14:09/mi
20K
2:49:24
12.43 mi
Rank: #1895 (-9)
15K → 20K
46:21 | 14:56/mi
Half
2:57:55
13.10 mi
Rank: #1882 (+13)
20K → Half
8:31 | 12:42/mi
25K
3:35:15
15.53 mi
Rank: #1889 (-7)
Half → 25K
37:20 | 15:20/mi
30K
4:17:43
18.64 mi
Rank: #1892 (-3)
25K → 30K
42:28 | 13:41/mi
35K
5:16:10
21.75 mi
Rank: #1890 (+2)
30K → 35K
58:27 | 18:49/mi
25.2M
6:12:21
25.20 mi
Rank: #1889 (+1)
35K → 25.2M
56:11 | 16:17/mi
Finish
6:25:48
26.22 mi
Rank: #1884 (+5)
25.2M → Finish
13:27 | 13:12/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:57:55
Pace13:35 /mi
2nd Half
Distance13.12 mi
Time3:27:54
Pace15:51 /mi
📊Positive Split: 16.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:19:3436:5611:5436:56
11:54
-
10K
6.21 mi09:01:441:19:0612:4442:10
13:35
+1:41
15K
9.32 mi09:45:412:03:0313:1343:57
14:09
+0:34
20K
12.43 mi10:32:022:49:2413:3846:21
14:56
+0:47
Half
13.10 mi10:40:332:57:5513:358:31
12:42
-2:14
25K
15.53 mi11:17:533:35:1513:5237:20
15:20
+2:38
30K
18.64 mi12:00:214:17:4313:5042:28
13:41
-1:39
35K
21.75 mi12:58:485:16:1014:3358:27
18:49
+5:08
25.2M
25.20 mi13:54:596:12:2114:4756:11
16:17
-2:32
Finish
26.22 mi14:08:266:25:4814:4413:27
13:12
-3:05

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

11:54 /mi

Average Pace

14:44 /mi

Slowest Pace

18:49 /mi

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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

58:54

15% of race

Time at Steady Pace

2:54:56

45% of race

Time at Slower Pace

2:31:58

39% of race

Average Pace: 14:43 /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 mi08:19:3436:5611:5436:56
11:54
#1763
10K
6.21 mi09:01:441:19:0612:4442:10
13:35
#1850
15K
9.32 mi09:45:412:03:0313:1343:57
14:09
#1886
20K
12.43 mi10:32:022:49:2413:3846:21
14:56
#1895
Half
13.10 mi10:40:332:57:5513:358:31
12:42
#1882
25K
15.53 mi11:17:533:35:1513:5237:20
15:20
#1889
30K
18.64 mi12:00:214:17:4313:5042:28
13:41
#1892
35K
21.75 mi12:58:485:16:1014:3358:27
18:49
#1890
25.2M
25.20 mi13:54:596:12:2114:4756:11
16:17
#1889
Finish
26.22 mi14:08:266:25:4814:4413:27
13:12
#1884
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF30-34Seg. OverallSeg. FemalesSeg. F30-34
5K3.11 mi3.11 mi1763673931905(Top 98%)765(Top 97%)101(Top 97%)
10K6.21 mi3.10 mi1850-87724-5198-51885(Top 97%)751(Top 95%)100(Top 96%)
15K9.32 mi3.11 mi1886-36750-26101-31905(Top 98%)765(Top 97%)101(Top 97%)
20K12.43 mi3.11 mi1895-9756-61011911(Top 98%)771(Top 97%)102(Top 98%)
Half13.10 mi0.67 mi1882+13750+6100+11627(Top 83%)609(Top 77%)83(Top 80%)
25K15.53 mi2.43 mi1889-7752-2101-11869(Top 96%)754(Top 95%)101(Top 97%)
30K18.64 mi3.11 mi1892-3756-41011838(Top 94%)734(Top 93%)98(Top 94%)
35K21.75 mi3.11 mi1890+2756100+11879(Top 96%)759(Top 96%)99(Top 95%)
25.2M25.20 mi3.45 mi1889+1757-1101-11842(Top 95%)746(Top 94%)96(Top 92%)
Finish26.22 mi1.02 mi1884+5755+2100+11716(Top 88%)690(Top 87%)91(Top 88%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×1
+26ft-31ft

Overall

1905

Females

765

F30-34

101

5K→10K

3.1 - 6.2 mi

Top 97%
×2
+38ft-17ft

Overall

1885

Females

751

F30-34

100

10K→15K

6.2 - 9.3 mi

Top 98%
×2
+26ft-44ft

Overall

1905

Females

765

F30-34

101

15K→20K

9.3 - 12.4 mi

Top 98%
×1
+35ft-22ft

Overall

1911

Females

771

F30-34

102

20K→Half

12.4 - 13.1 mi

Top 83%
×1
+7ft-13ft

Overall

1627

Females

609

F30-34

83

Half→25K

13.1 - 15.5 mi

Top 96%
×2
+48ft-19ft

Overall

1869

Females

754

F30-34

101

25K→30K

15.5 - 18.6 mi

Top 94%
×2
+38ft-52ft

Overall

1838

Females

734

F30-34

98

30K→35K

18.6 - 21.8 mi

Top 96%
×2
+39ft-39ft

Overall

1879

Females

759

F30-34

99

35K→25.2M

21.8 - 25.2 mi

Top 95%
×3
+57ft-58ft

Overall

1842

Females

746

F30-34

96

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×1
+17ft-12ft

Overall

1716

Females

690

F30-34

91

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
49
Passed By
170
Net Change
-121
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1763
5K → 10K693-87#1763#1850
10K → 15K036-36#1850#1886
15K → 20K413-9#1886#1895
20K → Half130+13#1895#1882
Half → 25K512-7#1882#1889
25K → 30K36-3#1889#1892
30K → 35K75+2#1892#1890
35K → 25.2M54+1#1890#1889
25.2M → Finish61+5#1889#1884
TOTALS49170-121
📊

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

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
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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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