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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Donald Potter

Bib: 3048 •M •Age: 36

Chesapeake, VA

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Gender (Male)
#0 / 1153
Age Group (M35-39)
Official
#0 / 178
Calculated (M35-39)
#0 / 178
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
35:26
3.11 mi
Rank: #1673
Start → 5K
35:26 | 11:25/mi
10K
1:10:10
6.21 mi
Rank: #1601 (+72)
5K → 10K
34:44 | 11:11/mi
15K
1:45:12
9.32 mi
Rank: #1588 (+13)
10K → 15K
35:02 | 11:17/mi
20K
2:21:39
12.43 mi
Rank: #1610 (-22)
15K → 20K
36:27 | 11:44/mi
Half
2:31:20
13.10 mi
Rank: #1623 (-13)
20K → Half
9:41 | 14:26/mi
25K
3:04:09
15.53 mi
Rank: #1652 (-29)
Half → 25K
32:49 | 13:29/mi
30K
3:47:02
18.64 mi
Rank: #1708 (-56)
25K → 30K
42:53 | 13:49/mi
35K
4:38:31
21.75 mi
Rank: #1709 (-1)
30K → 35K
51:29 | 16:35/mi
25.2M
5:28:41
25.20 mi
Rank: #1708 (+1)
35K → 25.2M
50:10 | 14:33/mi
Finish
5:42:05
26.22 mi
Rank: #1711 (-3)
25.2M → Finish
13:24 | 13:09/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:31:20
Pace11:34 /mi
2nd Half
Distance13.12 mi
Time3:10:46
Pace14:33 /mi
📊Positive Split: 26.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:07:4335:2611:2535:26
11:25
-
10K
6.21 mi08:42:271:10:1011:1834:44
11:11
-0:14
15K
9.32 mi09:17:291:45:1211:1835:02
11:17
+0:06
20K
12.43 mi09:53:562:21:3911:2436:27
11:44
+0:27
Half
13.10 mi10:03:372:31:2011:349:41
14:26
+2:42
25K
15.53 mi10:36:263:04:0911:5232:49
13:29
-0:57
30K
18.64 mi11:19:193:47:0212:1142:53
13:49
+0:20
35K
21.75 mi12:10:484:38:3112:4951:29
16:35
+2:46
25.2M
25.20 mi13:00:585:28:4113:0350:10
14:33
-2:02
Finish
26.22 mi13:14:225:42:0513:0413:24
13:09
-1:24

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

11:11 /mi

Average Pace

13:03 /mi

Slowest Pace

16:35 /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

2:21:39

41% of race

Time at Steady Pace

1:29:06

26% of race

Time at Slower Pace

1:51:20

33% of race

Average Pace: 13:03 /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 mi08:07:4335:2611:2535:26
11:25
#1673
10K
6.21 mi08:42:271:10:1011:1834:44
11:11
#1601
15K
9.32 mi09:17:291:45:1211:1835:02
11:17
#1588
20K
12.43 mi09:53:562:21:3911:2436:27
11:44
#1610
Half
13.10 mi10:03:372:31:2011:349:41
14:26
#1623
25K
15.53 mi10:36:263:04:0911:5232:49
13:29
#1652
30K
18.64 mi11:19:193:47:0212:1142:53
13:49
#1708
35K
21.75 mi12:10:484:38:3112:4951:29
16:35
#1709
25.2M
25.20 mi13:00:585:28:4113:0350:10
14:33
#1708
Finish
26.22 mi13:14:225:42:0513:0413:24
13:09
#1711
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 mi167310431661552(Top 80%)991(Top 86%)159(Top 89%)
10K6.21 mi3.10 mi1601+721011+32161+51542(Top 79%)982(Top 85%)158(Top 89%)
15K9.32 mi3.11 mi1588+131012-1162-11552(Top 80%)991(Top 86%)159(Top 89%)
20K12.43 mi3.11 mi1610-221017-5163-11614(Top 83%)1015(Top 88%)160(Top 90%)
Half13.10 mi0.67 mi1623-131022-5164-11827(Top 94%)1097(Top 95%)174(Top 98%)
25K15.53 mi2.43 mi1652-291032-10165-11698(Top 87%)1035(Top 90%)161(Top 90%)
30K18.64 mi3.11 mi1708-561057-25167-21859(Top 95%)1109(Top 96%)175(Top 98%)
35K21.75 mi3.11 mi1709-11053+4165+21703(Top 87%)1023(Top 89%)162(Top 91%)
25.2M25.20 mi3.45 mi1708+11050+3166-11675(Top 86%)1003(Top 87%)160(Top 90%)
Finish26.22 mi1.02 mi1711-310501661709(Top 88%)1019(Top 88%)166(Top 93%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×1
+26ft-31ft

Overall

1552

Males

991

M35-39

159

5K→10K

3.1 - 6.2 mi

Top 79%
×2
+38ft-17ft

Overall

1542

Males

982

M35-39

158

10K→15K

6.2 - 9.3 mi

Top 80%
×2
+26ft-44ft

Overall

1552

Males

991

M35-39

159

15K→20K

9.3 - 12.4 mi

Top 83%
×1
+35ft-22ft

Overall

1614

Males

1015

M35-39

160

20K→Half

12.4 - 13.1 mi

Top 94%
×1
+7ft-13ft

Overall

1827

Males

1097

M35-39

174

Half→25K

13.1 - 15.5 mi

Top 87%
×2
+48ft-19ft

Overall

1698

Males

1035

M35-39

161

25K→30K

15.5 - 18.6 mi

Top 95%
×2
+38ft-52ft

Overall

1859

Males

1109

M35-39

175

30K→35K

18.6 - 21.8 mi

Top 87%
×2
+39ft-39ft

Overall

1703

Males

1023

M35-39

162

35K→25.2M

21.8 - 25.2 mi

Top 86%
×3
+57ft-58ft

Overall

1675

Males

1003

M35-39

160

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×1
+17ft-12ft

Overall

1709

Males

1019

M35-39

166

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
180
Passed By
218
Net Change
-38
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1673
5K → 10K8614+72#1673#1601
10K → 15K3421+13#1601#1588
15K → 20K1133-22#1588#1610
20K → Half922-13#1610#1623
Half → 25K837-29#1623#1652
25K → 30K258-56#1652#1708
30K → 35K1617-1#1708#1709
35K → 25.2M1110+1#1709#1708
25.2M → Finish36-3#1708#1711
TOTALS180218-38
📊

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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