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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Libby Miles

Bib: 973 •F •Age: 23

Charlottesvle, VA

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Top 12%
Gender (Female)
#0 / 791
Top 8%
Age Group (F20-24)
#0 / 107
Top 12%
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
24:37
3.11 mi
Rank: #316
Start → 5K
24:37 | 7:56/mi
10K
48:51
6.21 mi
Rank: #289 (+27)
5K → 10K
24:14 | 7:48/mi
15K
1:12:57
9.32 mi
Rank: #281 (+8)
10K → 15K
24:06 | 7:46/mi
20K
1:36:47
12.43 mi
Rank: #272 (+9)
15K → 20K
23:50 | 7:41/mi
Half
1:42:20
13.10 mi
Rank: #269 (+3)
20K → Half
5:33 | 8:17/mi
25K
2:01:16
15.53 mi
Rank: #260 (+9)
Half → 25K
18:56 | 7:47/mi
30K
2:22:20
18.64 mi
Rank: #238 (+22)
25K → 30K
21:04 | 6:47/mi
35K
2:49:35
21.75 mi
Rank: #219 (+19)
30K → 35K
27:15 | 8:47/mi
25.2M
3:19:24
25.20 mi
Rank: #228 (-9)
35K → 25.2M
29:49 | 8:39/mi
Finish
3:28:29
26.22 mi
Rank: #236 (-8)
25.2M → Finish
9:05 | 8:55/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time1:42:20
Pace7:49 /mi
2nd Half
Distance13.12 mi
Time1:46:09
Pace8:06 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi07:56:4924:377:5624:37
7:56
-
10K
6.21 mi08:21:0348:517:5224:14
7:48
-0:08
15K
9.32 mi08:45:091:12:577:5024:06
7:46
-0:02
20K
12.43 mi09:08:591:36:477:4823:50
7:41
-0:05
Half
13.10 mi09:14:321:42:207:495:33
8:17
+0:36
25K
15.53 mi09:33:282:01:167:4918:56
7:47
-0:30
30K
18.64 mi09:54:322:22:207:3921:04
6:47
-1:00
35K
21.75 mi10:21:472:49:357:4827:15
8:47
+2:00
25.2M
25.20 mi10:51:363:19:247:5529:49
8:39
-0:08
Finish
26.22 mi11:00:413:28:297:589:05
8:55
+0:16

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

6:47 /mi

Average Pace

7:57 /mi

Slowest Pace

8:55 /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

21:04

10% of race

Time at Steady Pace

1:55:43

56% of race

Time at Slower Pace

1:11:42

34% of race

Average Pace: 7:57 /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 mi07:56:4924:377:5624:37
7:56
#316
10K
6.21 mi08:21:0348:517:5224:14
7:48
#289
15K
9.32 mi08:45:091:12:577:5024:06
7:46
#281
20K
12.43 mi09:08:591:36:477:4823:50
7:41
#272
Half
13.10 mi09:14:321:42:207:495:33
8:17
#269
25K
15.53 mi09:33:282:01:167:4918:56
7:47
#260
30K
18.64 mi09:54:322:22:207:3921:04
6:47
#238
35K
21.75 mi10:21:472:49:357:4827:15
8:47
#219
25.2M
25.20 mi10:51:363:19:247:5529:49
8:39
#228
Finish
26.22 mi11:00:413:28:297:589:05
8:55
#236
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF20-24Seg. OverallSeg. FemalesSeg. F20-24
5K3.11 mi3.11 mi3167416260(Top 13%)53(Top 7%)14(Top 13%)
10K6.21 mi3.10 mi289+2764+1014+2276(Top 14%)59(Top 7%)14(Top 13%)
15K9.32 mi3.11 mi281+862+214260(Top 13%)53(Top 7%)14(Top 13%)
20K12.43 mi3.11 mi272+959+314242(Top 12%)51(Top 6%)14(Top 13%)
Half13.10 mi0.67 mi269+35914255(Top 13%)54(Top 7%)13(Top 12%)
25K15.53 mi2.43 mi260+955+414211(Top 11%)45(Top 6%)11(Top 10%)
30K18.64 mi3.11 mi238+2252+313+1190(Top 10%)43(Top 5%)12(Top 11%)
35K21.75 mi3.11 mi219+1951+112+1181(Top 9%)45(Top 6%)8(Top 7%)
25.2M25.20 mi3.45 mi228-957-613-1291(Top 15%)82(Top 10%)14(Top 13%)
Finish26.22 mi1.02 mi236-860-313559(Top 29%)191(Top 24%)38(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×1
+26ft-31ft

Overall

260

Females

53

F20-24

14

5K→10K

3.1 - 6.2 mi

Top 14%
×2
+38ft-17ft

Overall

276

Females

59

F20-24

14

10K→15K

6.2 - 9.3 mi

Top 13%
×2
+26ft-44ft

Overall

260

Females

53

F20-24

14

15K→20K

9.3 - 12.4 mi

Top 12%
×1
+35ft-22ft

Overall

242

Females

51

F20-24

14

20K→Half

12.4 - 13.1 mi

Top 13%
×1
+7ft-13ft

Overall

255

Females

54

F20-24

13

Half→25K

13.1 - 15.5 mi

Top 11%
×2
+48ft-19ft

Overall

211

Females

45

F20-24

11

25K→30K

15.5 - 18.6 mi

Top 10%
×2
+38ft-52ft

Overall

190

Females

43

F20-24

12

30K→35K

18.6 - 21.8 mi

Top 9%
×2
+39ft-39ft

Overall

181

Females

45

F20-24

8

35K→25.2M

21.8 - 25.2 mi

Top 15%
×3
+57ft-58ft

Overall

291

Females

82

F20-24

14

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×1
+17ft-12ft

Overall

559

Females

191

F20-24

38

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
113
Passed By
33
Net Change
+80
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#316
5K → 10K303+27#316#289
10K → 15K80+8#289#281
15K → 20K101+9#281#272
20K → Half30+3#272#269
Half → 25K112+9#269#260
25K → 30K220+22#260#238
30K → 35K223+19#238#219
35K → 25.2M615-9#219#228
25.2M → Finish19-8#228#236
TOTALS11333+80
📊

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

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
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