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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Colette Nortman

Bib: 1239 •F •Age: 25

Washington, DC

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Gender (Female)
#0 / 791
Top 44%
Age Group (F25-29)
Official
#0 / 180
Calculated (F25-29)
#0 / 180
Top 50%
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
30:05
3.11 mi
Rank: #1069
Start → 5K
30:05 | 9:41/mi
10K
1:00:35
6.21 mi
Rank: #1074 (-5)
5K → 10K
30:30 | 9:50/mi
15K
1:30:36
9.32 mi
Rank: #1055 (+19)
10K → 15K
30:01 | 9:40/mi
20K
2:01:13
12.43 mi
Rank: #1054 (+1)
15K → 20K
30:37 | 9:52/mi
Half
2:08:57
13.10 mi
Rank: #1072 (-18)
20K → Half
7:44 | 11:32/mi
25K
2:35:39
15.53 mi
Rank: #1099 (-27)
Half → 25K
26:42 | 10:58/mi
30K
3:03:03
18.64 mi
Rank: #1064 (+35)
25K → 30K
27:24 | 8:50/mi
35K
3:42:40
21.75 mi
Rank: #1056 (+8)
30K → 35K
39:37 | 12:46/mi
25.2M
4:21:04
25.20 mi
Rank: #1041 (+15)
35K → 25.2M
38:24 | 11:08/mi
Finish
4:30:05
26.22 mi
Rank: #1018 (+23)
25.2M → Finish
9:01 | 8:51/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:08:57
Pace9:51 /mi
2nd Half
Distance13.12 mi
Time2:21:09
Pace10:46 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:10:1230:059:4130:05
9:41
-
10K
6.21 mi08:40:421:00:359:4530:30
9:50
+0:09
15K
9.32 mi09:10:431:30:369:4430:01
9:40
-0:10
20K
12.43 mi09:41:202:01:139:4630:37
9:52
+0:12
Half
13.10 mi09:49:042:08:579:517:44
11:32
+1:40
25K
15.53 mi10:15:462:35:3910:0226:42
10:58
-0:34
30K
18.64 mi10:43:103:03:039:5027:24
8:50
-2:08
35K
21.75 mi11:22:473:42:4010:1539:37
12:46
+3:56
25.2M
25.20 mi12:01:114:21:0410:2238:24
11:08
-1:38
Finish
26.22 mi12:10:124:30:0510:199:01
8:51
-2:17

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

8:50 /mi

Average Pace

10:19 /mi

Slowest Pace

12:46 /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

36:25

13% of race

Time at Steady Pace

2:01:13

45% of race

Time at Slower Pace

1:52:27

42% of race

Average Pace: 10:18 /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 mi08:10:1230:059:4130:05
9:41
#1069
10K
6.21 mi08:40:421:00:359:4530:30
9:50
#1074
15K
9.32 mi09:10:431:30:369:4430:01
9:40
#1055
20K
12.43 mi09:41:202:01:139:4630:37
9:52
#1054
Half
13.10 mi09:49:042:08:579:517:44
11:32
#1072
25K
15.53 mi10:15:462:35:3910:0226:42
10:58
#1099
30K
18.64 mi10:43:103:03:039:5027:24
8:50
#1064
35K
21.75 mi11:22:473:42:4010:1539:37
12:46
#1056
25.2M
25.20 mi12:01:114:21:0410:2238:24
11:08
#1041
Finish
26.22 mi12:10:124:30:0510:199:01
8:51
#1018
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF25-29Seg. OverallSeg. FemalesSeg. F25-29
5K3.11 mi3.11 mi1069340881030(Top 53%)319(Top 40%)83(Top 46%)
10K6.21 mi3.10 mi1074-5331+986+21093(Top 56%)337(Top 43%)88(Top 49%)
15K9.32 mi3.11 mi1055+19329+2861030(Top 53%)319(Top 40%)83(Top 46%)
20K12.43 mi3.11 mi1054+1331-287-11087(Top 56%)342(Top 43%)89(Top 49%)
Half13.10 mi0.67 mi1072-18336-588-11372(Top 70%)481(Top 61%)126(Top 70%)
25K15.53 mi2.43 mi1099-27352-1692-41231(Top 63%)420(Top 53%)116(Top 64%)
30K18.64 mi3.11 mi1064+35340+1289+3876(Top 45%)277(Top 35%)82(Top 46%)
35K21.75 mi3.11 mi1056+8345-5891110(Top 57%)407(Top 51%)108(Top 60%)
25.2M25.20 mi3.45 mi1041+15348-390-1940(Top 48%)356(Top 45%)94(Top 52%)
Finish26.22 mi1.02 mi1018+23345+390531(Top 27%)179(Top 23%)51(Top 28%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×1
+26ft-31ft

Overall

1030

Females

319

F25-29

83

5K→10K

3.1 - 6.2 mi

Top 56%
×2
+38ft-17ft

Overall

1093

Females

337

F25-29

88

10K→15K

6.2 - 9.3 mi

Top 53%
×2
+26ft-44ft

Overall

1030

Females

319

F25-29

83

15K→20K

9.3 - 12.4 mi

Top 56%
×1
+35ft-22ft

Overall

1087

Females

342

F25-29

89

20K→Half

12.4 - 13.1 mi

Top 70%
×1
+7ft-13ft

Overall

1372

Females

481

F25-29

126

Half→25K

13.1 - 15.5 mi

Top 63%
×2
+48ft-19ft

Overall

1231

Females

420

F25-29

116

25K→30K

15.5 - 18.6 mi

Top 45%
×2
+38ft-52ft

Overall

876

Females

277

F25-29

82

30K→35K

18.6 - 21.8 mi

Top 57%
×2
+39ft-39ft

Overall

1110

Females

407

F25-29

108

35K→25.2M

21.8 - 25.2 mi

Top 48%
×3
+57ft-58ft

Overall

940

Females

356

F25-29

94

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×1
+17ft-12ft

Overall

531

Females

179

F25-29

51

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
213
Passed By
162
Net Change
+51
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1069
5K → 10K2530-5#1069#1074
10K → 15K3011+19#1074#1055
15K → 20K1817+1#1055#1054
20K → Half523-18#1054#1072
Half → 25K1239-27#1072#1099
25K → 30K372+35#1099#1064
30K → 35K3123+8#1064#1056
35K → 25.2M3217+15#1056#1041
25.2M → Finish230+23#1041#1018
TOTALS213162+51
📊

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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