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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Taylor Johnston

Bib: 470 •M •Age: 24

Chester, VA

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Gender (Male)
#0 / 1153
Age Group (M20-24)
Official
#0 / 127
Calculated (M20-24)
#0 / 127
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
46:51
3.11 mi
Rank: #1943
Start → 5K
46:51 | 15:05/mi
10K
1:37:06
6.21 mi
Rank: #1946 (-3)
5K → 10K
50:15 | 16:11/mi
15K
2:25:32
9.32 mi
Rank: #1946
10K → 15K
48:26 | 15:36/mi
20K
3:20:22
12.43 mi
Rank: #1948 (-2)
15K → 20K
54:50 | 17:39/mi
Half
3:29:41
13.10 mi
Rank: #1939 (+9)
20K → Half
9:19 | 13:53/mi
25K
4:04:08
15.53 mi
Rank: #1943 (-4)
Half → 25K
34:27 | 14:09/mi
30K
4:47:51
18.64 mi
Rank: #1940 (+3)
25K → 30K
43:43 | 14:05/mi
35K
5:53:28
21.75 mi
Rank: #1944 (-4)
30K → 35K
1:05:37 | 21:08/mi
25.2M
6:57:58
25.20 mi
Rank: #1946 (-2)
35K → 25.2M
1:04:30 | 18:42/mi
Finish
7:15:55
26.22 mi
Rank: #1946
25.2M → Finish
17:57 | 17:37/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time3:29:41
Pace16:01 /mi
2nd Half
Distance13.12 mi
Time3:46:14
Pace17:15 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:19:0746:5115:0546:51
15:05
-
10K
6.21 mi09:09:221:37:0615:3850:15
16:11
+1:06
15K
9.32 mi09:57:482:25:3215:3748:26
15:36
-0:35
20K
12.43 mi10:52:383:20:2216:0854:50
17:39
+2:03
Half
13.10 mi11:01:573:29:4116:019:19
13:53
-3:46
25K
15.53 mi11:36:244:04:0815:4334:27
14:09
+0:16
30K
18.64 mi12:20:074:47:5115:2743:43
14:05
-0:04
35K
21.75 mi13:25:445:53:2816:161:05:37
21:08
+7:03
25.2M
25.20 mi14:30:146:57:5816:361:04:30
18:42
-2:26
Finish
26.22 mi14:48:117:15:5516:3917:57
17:37
-1:05

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

13:53 /mi

Average Pace

16:38 /mi

Slowest Pace

21:08 /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

1:27:29

20% of race

Time at Steady Pace

2:25:32

33% of race

Time at Slower Pace

3:22:54

47% of race

Average Pace: 16:38 /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 mi08:19:0746:5115:0546:51
15:05
#1943
10K
6.21 mi09:09:221:37:0615:3850:15
16:11
#1946
15K
9.32 mi09:57:482:25:3215:3748:26
15:36
#1946
20K
12.43 mi10:52:383:20:2216:0854:50
17:39
#1948
Half
13.10 mi11:01:573:29:4116:019:19
13:53
#1939
25K
15.53 mi11:36:244:04:0815:4334:27
14:09
#1943
30K
18.64 mi12:20:074:47:5115:2743:43
14:05
#1940
35K
21.75 mi13:25:445:53:2816:161:05:37
21:08
#1944
25.2M
25.20 mi14:30:146:57:5816:361:04:30
18:42
#1946
Finish
26.22 mi14:48:117:15:5516:3917:57
17:37
#1946
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM20-24Seg. OverallSeg. MalesSeg. M20-24
5K3.11 mi3.11 mi194311511271940(Top 100%)1148(Top 100%)127(Top 100%)
10K6.21 mi3.10 mi1946-31150+11271947(Top 100%)1152(Top 100%)127(Top 100%)
15K9.32 mi3.11 mi194611501271940(Top 100%)1148(Top 100%)127(Top 100%)
20K12.43 mi3.11 mi1948-21152-21271949(Top 100%)1153(Top 100%)127(Top 100%)
Half13.10 mi0.67 mi1939+91145+71271788(Top 92%)1085(Top 94%)127(Top 100%)
25K15.53 mi2.43 mi1943-41150-51271765(Top 91%)1067(Top 93%)122(Top 96%)
30K18.64 mi3.11 mi1940+31149+11271871(Top 96%)1114(Top 97%)126(Top 99%)
35K21.75 mi3.11 mi1944-41150-11271933(Top 99%)1145(Top 99%)126(Top 99%)
25.2M25.20 mi3.45 mi1946-21151-11271934(Top 99%)1144(Top 99%)126(Top 99%)
Finish26.22 mi1.02 mi194611511271936(Top 99%)1142(Top 99%)126(Top 99%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 100%
×1
+26ft-31ft

Overall

1940

Males

1148

M20-24

127

5K→10K

3.1 - 6.2 mi

Top 100%
×2
+38ft-17ft

Overall

1947

Males

1152

M20-24

127

10K→15K

6.2 - 9.3 mi

Top 100%
×2
+26ft-44ft

Overall

1940

Males

1148

M20-24

127

15K→20K

9.3 - 12.4 mi

Top 100%
×1
+35ft-22ft

Overall

1949

Males

1153

M20-24

127

20K→Half

12.4 - 13.1 mi

Top 92%
×1
+7ft-13ft

Overall

1788

Males

1085

M20-24

127

Half→25K

13.1 - 15.5 mi

Top 91%
×2
+48ft-19ft

Overall

1765

Males

1067

M20-24

122

25K→30K

15.5 - 18.6 mi

Top 96%
×2
+38ft-52ft

Overall

1871

Males

1114

M20-24

126

30K→35K

18.6 - 21.8 mi

Top 99%
×2
+39ft-39ft

Overall

1933

Males

1145

M20-24

126

35K→25.2M

21.8 - 25.2 mi

Top 99%
×3
+57ft-58ft

Overall

1934

Males

1144

M20-24

126

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×1
+17ft-12ft

Overall

1936

Males

1142

M20-24

126

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
17
Passed By
20
Net Change
-3
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1943
5K → 10K14-3#1943#1946
10K → 15K000#1946#1946
15K → 20K02-2#1946#1948
20K → Half90+9#1948#1939
Half → 25K48-4#1939#1943
25K → 30K30+3#1943#1940
30K → 35K04-4#1940#1944
35K → 25.2M02-2#1944#1946
25.2M → Finish000#1946#1946
TOTALS1720-3
📊

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.

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