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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Margeret McGrogan

Bib: 2833 •F •Age: 43

Virginia Bch, VA

Shamrock Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 1949
Gender (Female)
#0 / 791
Masters (Masters Women)
#0 / 277
Age Group (F40-44)
Official
#0 / 100
Calculated (F40-44)
#0 / 100
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
37:44
3.11 mi
Rank: #1796
Start → 5K
37:44 | 12:09/mi
10K
1:23:32
6.21 mi
Rank: #1898 (-102)
5K → 10K
45:48 | 14:45/mi
15K
2:02:01
9.32 mi
Rank: #1873 (+25)
10K → 15K
38:29 | 12:24/mi
20K
2:44:04
12.43 mi
Rank: #1870 (+3)
15K → 20K
42:03 | 13:33/mi
Half
2:54:33
13.10 mi
Rank: #1863 (+7)
20K → Half
10:29 | 15:38/mi
25K
3:37:15
15.53 mi
Rank: #1900 (-37)
Half → 25K
42:42 | 17:32/mi
30K
4:22:42
18.64 mi
Rank: #1906 (-6)
25K → 30K
45:27 | 14:38/mi
35K
5:26:51
21.75 mi
Rank: #1915 (-9)
30K → 35K
1:04:09 | 20:39/mi
25.2M
6:34:19
25.20 mi
Rank: #1926 (-11)
35K → 25.2M
1:07:28 | 19:33/mi
Finish
6:51:34
26.22 mi
Rank: #1928 (-2)
25.2M → Finish
17:15 | 16:56/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:54:33
Pace13:20 /mi
2nd Half
Distance13.12 mi
Time3:57:02
Pace18:04 /mi
📊Positive Split: 35.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:20:3437:4412:0937:44
12:09
-
10K
6.21 mi09:06:221:23:3213:2745:48
14:45
+2:36
15K
9.32 mi09:44:512:02:0113:0638:29
12:24
-2:21
20K
12.43 mi10:26:542:44:0413:1342:03
13:33
+1:09
Half
13.10 mi10:37:232:54:3313:2010:29
15:38
+2:05
25K
15.53 mi11:20:053:37:1514:0042:42
17:32
+1:54
30K
18.64 mi12:05:324:22:4214:0645:27
14:38
-2:54
35K
21.75 mi13:09:415:26:5115:021:04:09
20:39
+6:01
25.2M
25.20 mi14:17:096:34:1915:391:07:28
19:33
-1:06
Finish
26.22 mi14:34:246:51:3415:4317:15
16:56
-2:37

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

12:09 /mi

Average Pace

15:43 /mi

Slowest Pace

20:39 /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

1:58:16

29% of race

Time at Steady Pace

1:58:59

29% of race

Time at Slower Pace

2:54:19

42% of race

Average Pace: 15:42 /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 mi08:20:3437:4412:0937:44
12:09
#1796
10K
6.21 mi09:06:221:23:3213:2745:48
14:45
#1898
15K
9.32 mi09:44:512:02:0113:0638:29
12:24
#1873
20K
12.43 mi10:26:542:44:0413:1342:03
13:33
#1870
Half
13.10 mi10:37:232:54:3313:2010:29
15:38
#1863
25K
15.53 mi11:20:053:37:1514:0042:42
17:32
#1900
30K
18.64 mi12:05:324:22:4214:0645:27
14:38
#1906
35K
21.75 mi13:09:415:26:5115:021:04:09
20:39
#1915
25.2M
25.20 mi14:17:096:34:1915:391:07:28
19:33
#1926
Finish
26.22 mi14:34:246:51:3415:4317:15
16:56
#1928
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi1796695831764(Top 91%)670(Top 85%)81(Top 81%)
10K6.21 mi3.10 mi1898-102759-6492-91926(Top 99%)780(Top 99%)97(Top 97%)
15K9.32 mi3.11 mi1873+25737+2289+31764(Top 91%)670(Top 85%)81(Top 81%)
20K12.43 mi3.11 mi1870+3737891842(Top 95%)728(Top 92%)91(Top 91%)
Half13.10 mi0.67 mi1863+7736+190-11886(Top 97%)762(Top 96%)98(Top 98%)
25K15.53 mi2.43 mi1900-37761-2596-61928(Top 99%)785(Top 99%)100(Top 100%)
30K18.64 mi3.11 mi1906-6765-4961911(Top 98%)776(Top 98%)97(Top 97%)
35K21.75 mi3.11 mi1915-9772-797-11927(Top 99%)780(Top 99%)99(Top 99%)
25.2M25.20 mi3.45 mi1926-11780-898-11941(Top 100%)789(Top 100%)100(Top 100%)
Finish26.22 mi1.02 mi1928-2780981927(Top 99%)785(Top 99%)98(Top 98%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×1
+26ft-31ft

Overall

1764

Females

670

F40-44

81

5K→10K

3.1 - 6.2 mi

Top 99%
×2
+38ft-17ft

Overall

1926

Females

780

F40-44

97

10K→15K

6.2 - 9.3 mi

Top 91%
×2
+26ft-44ft

Overall

1764

Females

670

F40-44

81

15K→20K

9.3 - 12.4 mi

Top 95%
×1
+35ft-22ft

Overall

1842

Females

728

F40-44

91

20K→Half

12.4 - 13.1 mi

Top 97%
×1
+7ft-13ft

Overall

1886

Females

762

F40-44

98

Half→25K

13.1 - 15.5 mi

Top 99%
×2
+48ft-19ft

Overall

1928

Females

785

F40-44

100

25K→30K

15.5 - 18.6 mi

Top 98%
×2
+38ft-52ft

Overall

1911

Females

776

F40-44

97

30K→35K

18.6 - 21.8 mi

Top 99%
×2
+39ft-39ft

Overall

1927

Females

780

F40-44

99

35K→25.2M

21.8 - 25.2 mi

Top 100%
×3
+57ft-58ft

Overall

1941

Females

789

F40-44

100

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×1
+17ft-12ft

Overall

1927

Females

785

F40-44

98

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
48
Passed By
180
Net Change
-132
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1796
5K → 10K0102-102#1796#1898
10K → 15K272+25#1898#1873
15K → 20K96+3#1873#1870
20K → Half92+7#1870#1863
Half → 25K239-37#1863#1900
25K → 30K06-6#1900#1906
30K → 35K09-9#1906#1915
35K → 25.2M112-11#1915#1926
25.2M → Finish02-2#1926#1928
TOTALS48180-132
📊

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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