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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Brook Sanderson

Bib: 1925 •F •Age: 19

Forest, VA

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Top 45%
Gender (Female)
#0 / 791
Top 36%
Age Group (F15-19)
#0 / 12
Top 33%
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
26:15
3.11 mi
Rank: #503
Start → 5K
26:15 | 8:27/mi
10K
53:12
6.21 mi
Rank: #546 (-43)
5K → 10K
26:57 | 8:41/mi
15K
1:20:43
9.32 mi
Rank: #592 (-46)
10K → 15K
27:31 | 8:52/mi
20K
1:48:02
12.43 mi
Rank: #619 (-27)
15K → 20K
27:19 | 8:48/mi
Half
1:54:25
13.10 mi
Rank: #618 (+1)
20K → Half
6:23 | 9:31/mi
25K
2:18:12
15.53 mi
Rank: #664 (-46)
Half → 25K
23:47 | 9:46/mi
30K
2:48:17
18.64 mi
Rank: #772 (-108)
25K → 30K
30:05 | 9:41/mi
35K
3:31:21
21.75 mi
Rank: #866 (-94)
30K → 35K
43:04 | 13:52/mi
25.2M
4:11:21
25.20 mi
Rank: #903 (-37)
35K → 25.2M
40:00 | 11:36/mi
Finish
4:20:16
26.22 mi
Rank: #884 (+19)
25.2M → Finish
8:55 | 8:45/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time1:54:25
Pace8:45 /mi
2nd Half
Distance13.12 mi
Time2:25:52
Pace11:08 /mi
📊Positive Split: 27.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:02:2226:158:2726:15
8:27
-
10K
6.21 mi08:29:1953:128:3426:57
8:41
+0:14
15K
9.32 mi08:56:501:20:438:4027:31
8:52
+0:11
20K
12.43 mi09:24:091:48:028:4227:19
8:48
-0:04
Half
13.10 mi09:30:321:54:258:456:23
9:31
+0:43
25K
15.53 mi09:54:192:18:128:5423:47
9:46
+0:15
30K
18.64 mi10:24:242:48:179:0230:05
9:41
-0:05
35K
21.75 mi11:07:283:31:219:4443:04
13:52
+4:11
25.2M
25.20 mi11:47:284:11:219:5940:00
11:36
-2:16
Finish
26.22 mi11:56:234:20:169:578:55
8:45
-2:51

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. Green = fastest, yellow = moderate, red = slowest segments.

Fastest Pace

8:27 /mi

Average Pace

9:56 /mi

Slowest Pace

13:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Color indicates pace quality: green = fast pace, yellow = moderate, red = slow pace.

Time at Fast Pace

53:12

20% of race

Time at Moderate Pace

2:04:00

48% of race

Time at Slow Pace

1:23:04

32% of race

Average Pace: 9:56 /mi

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Fast pace (< avg)
Moderate pace (≈ avg)
Slow pace (> avg)

🎨Heatmap

Pace Heatmap

Visual intensity map of your pacing throughout the race. Green = fastest, yellow = moderate, red = slowest.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Fast
Moderate
Slow

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 mi08:02:2226:158:2726:15
8:27
#503
10K
6.21 mi08:29:1953:128:3426:57
8:41
#546
15K
9.32 mi08:56:501:20:438:4027:31
8:52
#592
20K
12.43 mi09:24:091:48:028:4227:19
8:48
#619
Half
13.10 mi09:30:321:54:258:456:23
9:31
#618
25K
15.53 mi09:54:192:18:128:5423:47
9:46
#664
30K
18.64 mi10:24:242:48:179:0230:05
9:41
#772
35K
21.75 mi11:07:283:31:219:4443:04
13:52
#866
25.2M
25.20 mi11:47:284:11:219:5940:00
11:36
#903
Finish
26.22 mi11:56:234:20:169:578:55
8:45
#884
Fast pace
Moderate pace
Slow pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF15-19Seg. OverallSeg. FemalesSeg. F15-19
5K3.11 mi3.11 mi5031272694(Top 36%)191(Top 24%)1(Top 8%)
10K6.21 mi3.10 mi546-43140-132608(Top 31%)160(Top 20%)2(Top 17%)
15K9.32 mi3.11 mi592-46152-122694(Top 36%)191(Top 24%)1(Top 8%)
20K12.43 mi3.11 mi619-27165-131+1672(Top 34%)177(Top 22%)1(Top 8%)
Half13.10 mi0.67 mi618+1164+11683(Top 35%)185(Top 23%)2(Top 17%)
25K15.53 mi2.43 mi664-46174-101850(Top 44%)246(Top 31%)5(Top 42%)
30K18.64 mi3.11 mi772-108219-454-31150(Top 59%)405(Top 51%)6(Top 50%)
35K21.75 mi3.11 mi866-94267-4841302(Top 67%)494(Top 62%)7(Top 58%)
25.2M25.20 mi3.45 mi903-37291-2441061(Top 54%)414(Top 52%)6(Top 50%)
Finish26.22 mi1.02 mi884+19283+84504(Top 26%)165(Top 21%)3(Top 25%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×1
+26ft-31ft

Overall

694

Females

191

F15-19

1

5K→10K

3.1 - 6.2 mi

Top 31%
×2
+38ft-17ft

Overall

608

Females

160

F15-19

2

10K→15K

6.2 - 9.3 mi

Top 36%
×2
+26ft-44ft

Overall

694

Females

191

F15-19

1

15K→20K

9.3 - 12.4 mi

Top 34%
×1
+35ft-22ft

Overall

672

Females

177

F15-19

1

20K→Half

12.4 - 13.1 mi

Top 35%
×1
+7ft-13ft

Overall

683

Females

185

F15-19

2

Half→25K

13.1 - 15.5 mi

Top 44%
×2
+48ft-19ft

Overall

850

Females

246

F15-19

5

25K→30K

15.5 - 18.6 mi

Top 59%
×2
+38ft-52ft

Overall

1150

Females

405

F15-19

6

30K→35K

18.6 - 21.8 mi

Top 67%
×2
+39ft-39ft

Overall

1302

Females

494

F15-19

7

35K→25.2M

21.8 - 25.2 mi

Top 54%
×3
+57ft-58ft

Overall

1061

Females

414

F15-19

6

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×1
+17ft-12ft

Overall

504

Females

165

F15-19

3

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
61
Passed By
442
Net Change
-381
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#503
5K → 10K245-43#503#546
10K → 15K147-46#546#592
15K → 20K734-27#592#619
20K → Half87+1#619#618
Half → 25K551-46#618#664
25K → 30K3111-108#664#772
30K → 35K599-94#772#866
35K → 25.2M1148-37#866#903
25.2M → Finish190+19#903#884
TOTALS61442-381
📊

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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