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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

David Boldt

Bib: 1624 •M •Age: 57

Chesapeake, VA

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 (M55-59)
#0 / 61
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
28:39
3.11 mi
Rank: #898
Start → 5K
28:39 | 9:14/mi
10K
57:58
6.21 mi
Rank: #938 (-40)
5K → 10K
29:19 | 9:27/mi
15K
1:28:11
9.32 mi
Rank: #973 (-35)
10K → 15K
30:13 | 9:44/mi
20K
1:59:05
12.43 mi
Rank: #995 (-22)
15K → 20K
30:54 | 9:57/mi
Half
2:06:13
13.10 mi
Rank: #993 (+2)
20K → Half
7:08 | 10:38/mi
25K
2:31:50
15.53 mi
Rank: #1004 (-11)
Half → 25K
25:37 | 10:32/mi
30K
3:00:44
18.64 mi
Rank: #1011 (-7)
25K → 30K
28:54 | 9:19/mi
35K
3:45:38
21.75 mi
Rank: #1110 (-99)
30K → 35K
44:54 | 14:28/mi
25.2M
4:33:52
25.20 mi
Rank: #1195 (-85)
35K → 25.2M
48:14 | 13:59/mi
Finish
4:45:11
26.22 mi
Rank: #1198 (-3)
25.2M → Finish
11:19 | 11:07/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:06:13
Pace9:39 /mi
2nd Half
Distance13.12 mi
Time2:38:59
Pace12:08 /mi
📊Positive Split: 26.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:08:4728:399:1428:39
9:14
-
10K
6.21 mi08:38:0657:589:2029:19
9:27
+0:13
15K
9.32 mi09:08:191:28:119:2830:13
9:44
+0:17
20K
12.43 mi09:39:131:59:059:3530:54
9:57
+0:13
Half
13.10 mi09:46:212:06:139:397:08
10:38
+0:41
25K
15.53 mi10:11:582:31:509:4725:37
10:32
-0:06
30K
18.64 mi10:40:523:00:449:4228:54
9:19
-1:13
35K
21.75 mi11:25:463:45:3810:2344:54
14:28
+5:09
25.2M
25.20 mi12:14:004:33:5210:5348:14
13:59
-0:29
Finish
26.22 mi12:25:194:45:1110:5411:19
11:07
-2:52

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

9:14 /mi

Average Pace

10:53 /mi

Slowest Pace

14:28 /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

1:26:52

30% of race

Time at Steady Pace

1:45:11

37% of race

Time at Slower Pace

1:33:08

33% of race

Average Pace: 10:53 /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 mi08:08:4728:399:1428:39
9:14
#898
10K
6.21 mi08:38:0657:589:2029:19
9:27
#938
15K
9.32 mi09:08:191:28:119:2830:13
9:44
#973
20K
12.43 mi09:39:131:59:059:3530:54
9:57
#995
Half
13.10 mi09:46:212:06:139:397:08
10:38
#993
25K
15.53 mi10:11:582:31:509:4725:37
10:32
#1004
30K
18.64 mi10:40:523:00:449:4228:54
9:19
#1011
35K
21.75 mi11:25:463:45:3810:2344:54
14:28
#1110
25.2M
25.20 mi12:14:004:33:5210:5348:14
13:59
#1195
Finish
26.22 mi12:25:194:45:1110:5411:19
11:07
#1198
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi898641301051(Top 54%)721(Top 63%)31(Top 51%)
10K6.21 mi3.10 mi938-40660-1930970(Top 50%)684(Top 59%)30(Top 49%)
15K9.32 mi3.11 mi973-35683-2331-11051(Top 54%)721(Top 63%)31(Top 51%)
20K12.43 mi3.11 mi995-22691-830+11118(Top 57%)764(Top 66%)33(Top 54%)
Half13.10 mi0.67 mi993+2687+4301080(Top 55%)737(Top 64%)34(Top 56%)
25K15.53 mi2.43 mi1004-11690-331-11085(Top 56%)735(Top 64%)34(Top 56%)
30K18.64 mi3.11 mi1011-7692-233-21041(Top 53%)694(Top 60%)35(Top 57%)
35K21.75 mi3.11 mi1110-99739-4734-11415(Top 73%)864(Top 75%)39(Top 64%)
25.2M25.20 mi3.45 mi1195-85779-4037-31603(Top 82%)959(Top 83%)44(Top 72%)
Finish26.22 mi1.02 mi1198-3776+3371322(Top 68%)800(Top 69%)33(Top 54%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×1
+26ft-31ft

Overall

1051

Males

721

M55-59

31

5K→10K

3.1 - 6.2 mi

Top 50%
×2
+38ft-17ft

Overall

970

Males

684

M55-59

30

10K→15K

6.2 - 9.3 mi

Top 54%
×2
+26ft-44ft

Overall

1051

Males

721

M55-59

31

15K→20K

9.3 - 12.4 mi

Top 57%
×1
+35ft-22ft

Overall

1118

Males

764

M55-59

33

20K→Half

12.4 - 13.1 mi

Top 55%
×1
+7ft-13ft

Overall

1080

Males

737

M55-59

34

Half→25K

13.1 - 15.5 mi

Top 56%
×2
+48ft-19ft

Overall

1085

Males

735

M55-59

34

25K→30K

15.5 - 18.6 mi

Top 53%
×2
+38ft-52ft

Overall

1041

Males

694

M55-59

35

30K→35K

18.6 - 21.8 mi

Top 73%
×2
+39ft-39ft

Overall

1415

Males

864

M55-59

39

35K→25.2M

21.8 - 25.2 mi

Top 82%
×3
+57ft-58ft

Overall

1603

Males

959

M55-59

44

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×1
+17ft-12ft

Overall

1322

Males

800

M55-59

33

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
70
Passed By
370
Net Change
-300
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#898
5K → 10K747-40#898#938
10K → 15K439-35#938#973
15K → 20K426-22#973#995
20K → Half75+2#995#993
Half → 25K1021-11#993#1004
25K → 30K1825-7#1004#1011
30K → 35K11110-99#1011#1110
35K → 25.2M388-85#1110#1195
25.2M → Finish69-3#1195#1198
TOTALS70370-300
📊

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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