All Results|Race Analytics|Course|Contact

Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Jacob Westbrook

Bib: 82 •M •Age: 31

Alexandria, VA

Shamrock Marathon logo
0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 1949
Gender (Male)
#0 / 1153
Age Group (M30-34)
#0 / 185
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
27:33
3.11 mi
Rank: #719
Start → 5K
27:33 | 8:53/mi
10K
55:27
6.21 mi
Rank: #731 (-12)
5K → 10K
27:54 | 8:59/mi
15K
1:23:10
9.32 mi
Rank: #734 (-3)
10K → 15K
27:43 | 8:56/mi
20K
1:50:54
12.43 mi
Rank: #727 (+7)
15K → 20K
27:44 | 8:56/mi
Half
1:57:28
13.10 mi
Rank: #723 (+4)
20K → Half
6:34 | 9:48/mi
25K
2:22:27
15.53 mi
Rank: #794 (-71)
Half → 25K
24:59 | 10:16/mi
30K
2:54:41
18.64 mi
Rank: #896 (-102)
25K → 30K
32:14 | 10:23/mi
35K
3:39:48
21.75 mi
Rank: #1014 (-118)
30K → 35K
45:07 | 14:32/mi
25.2M
4:21:27
25.20 mi
Rank: #1045 (-31)
35K → 25.2M
41:39 | 12:04/mi
Finish
4:32:36
26.22 mi
Rank: #1061 (-16)
25.2M → Finish
11:09 | 10:57/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time1:57:28
Pace8:59 /mi
2nd Half
Distance13.12 mi
Time2:35:08
Pace11:50 /mi
📊Positive Split: 32.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi07:59:4627:338:5327:33
8:53
-
10K
6.21 mi08:27:4055:278:5627:54
8:59
+0:06
15K
9.32 mi08:55:231:23:108:5627:43
8:56
-0:03
20K
12.43 mi09:23:071:50:548:5627:44
8:56
0:00
Half
13.10 mi09:29:411:57:288:596:34
9:48
+0:52
25K
15.53 mi09:54:402:22:279:1124:59
10:16
+0:28
30K
18.64 mi10:26:542:54:419:2332:14
10:23
+0:07
35K
21.75 mi11:12:013:39:4810:0745:07
14:32
+4:09
25.2M
25.20 mi11:53:404:21:2710:2341:39
12:04
-2:28
Finish
26.22 mi12:04:494:32:3610:2511:09
10:57
-1:07

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

8:53 /mi

Average Pace

10:24 /mi

Slowest Pace

14:32 /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

1:50:54

41% of race

Time at Steady Pace

1:14:56

27% of race

Time at Slower Pace

1:26:46

32% of race

Average Pace: 10:24 /mi

Loading chart...
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 mi07:59:4627:338:5327:33
8:53
#719
10K
6.21 mi08:27:4055:278:5627:54
8:59
#731
15K
9.32 mi08:55:231:23:108:5627:43
8:56
#734
20K
12.43 mi09:23:071:50:548:5627:44
8:56
#727
Half
13.10 mi09:29:411:57:288:596:34
9:48
#723
25K
15.53 mi09:54:402:22:279:1124:59
10:16
#794
30K
18.64 mi10:26:542:54:419:2332:14
10:23
#896
35K
21.75 mi11:12:013:39:4810:0745:07
14:32
#1014
25.2M
25.20 mi11:53:404:21:2710:2341:39
12:04
#1045
Finish
26.22 mi12:04:494:32:3610:2511:09
10:57
#1061
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
5K3.11 mi3.11 mi71951787722(Top 37%)523(Top 45%)93(Top 50%)
10K6.21 mi3.10 mi731-12525-892-5766(Top 39%)549(Top 48%)94(Top 51%)
15K9.32 mi3.11 mi734-3527-294-2722(Top 37%)523(Top 45%)93(Top 50%)
20K12.43 mi3.11 mi727+7530-395-1741(Top 38%)540(Top 47%)93(Top 50%)
Half13.10 mi0.67 mi723+4527+393+2807(Top 41%)581(Top 50%)103(Top 56%)
25K15.53 mi2.43 mi794-71572-4599-61004(Top 52%)691(Top 60%)115(Top 62%)
30K18.64 mi3.11 mi896-102632-60107-81359(Top 70%)848(Top 74%)138(Top 75%)
35K21.75 mi3.11 mi1014-118683-51117-101426(Top 73%)870(Top 75%)145(Top 78%)
25.2M25.20 mi3.45 mi1045-31695-12120-31191(Top 61%)721(Top 63%)120(Top 65%)
Finish26.22 mi1.02 mi1061-16701-61201266(Top 65%)778(Top 67%)131(Top 71%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×1
+26ft-31ft

Overall

722

Males

523

M30-34

93

5K→10K

3.1 - 6.2 mi

Top 39%
×2
+38ft-17ft

Overall

766

Males

549

M30-34

94

10K→15K

6.2 - 9.3 mi

Top 37%
×2
+26ft-44ft

Overall

722

Males

523

M30-34

93

15K→20K

9.3 - 12.4 mi

Top 38%
×1
+35ft-22ft

Overall

741

Males

540

M30-34

93

20K→Half

12.4 - 13.1 mi

Top 41%
×1
+7ft-13ft

Overall

807

Males

581

M30-34

103

Half→25K

13.1 - 15.5 mi

Top 52%
×2
+48ft-19ft

Overall

1004

Males

691

M30-34

115

25K→30K

15.5 - 18.6 mi

Top 70%
×2
+38ft-52ft

Overall

1359

Males

848

M30-34

138

30K→35K

18.6 - 21.8 mi

Top 73%
×2
+39ft-39ft

Overall

1426

Males

870

M30-34

145

35K→25.2M

21.8 - 25.2 mi

Top 61%
×3
+57ft-58ft

Overall

1191

Males

721

M30-34

120

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×1
+17ft-12ft

Overall

1266

Males

778

M30-34

131

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
68
Passed By
410
Net Change
-342
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#719
5K → 10K921-12#719#731
10K → 15K1114-3#731#734
15K → 20K1811+7#734#727
20K → Half73+4#727#723
Half → 25K273-71#723#794
25K → 30K1103-102#794#896
30K → 35K7125-118#896#1014
35K → 25.2M1142-31#1014#1045
25.2M → Finish218-16#1045#1061
TOTALS68410-342
📊

Passing Analysis Visualizations

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

Time:
Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

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
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
Share Feedback