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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Trenton Shannon

Bib: 1222 •M •Age: 20

Stafford, 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
29:08
3.11 mi
Rank: #966
Start → 5K
29:08 | 9:23/mi
10K
57:28
6.21 mi
Rank: #915 (+51)
5K → 10K
28:20 | 9:08/mi
15K
1:27:18
9.32 mi
Rank: #944 (-29)
10K → 15K
29:50 | 9:37/mi
20K
1:58:49
12.43 mi
Rank: #992 (-48)
15K → 20K
31:31 | 10:09/mi
Half
2:06:06
13.10 mi
Rank: #990 (+2)
20K → Half
7:17 | 10:52/mi
25K
2:33:58
15.53 mi
Rank: #1062 (-72)
Half → 25K
27:52 | 11:27/mi
30K
3:12:33
18.64 mi
Rank: #1235 (-173)
25K → 30K
38:35 | 12:26/mi
35K
3:57:21
21.75 mi
Rank: #1275 (-40)
30K → 35K
44:48 | 14:26/mi
25.2M
4:40:30
25.20 mi
Rank: #1274 (+1)
35K → 25.2M
43:09 | 12:31/mi
Finish
4:52:27
26.22 mi
Rank: #1282 (-8)
25.2M → Finish
11:57 | 11:44/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:06:06
Pace9:38 /mi
2nd Half
Distance13.12 mi
Time2:46:21
Pace12:41 /mi
📊Positive Split: 31.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:13:3829:089:2329:08
9:23
-
10K
6.21 mi08:41:5857:289:1528:20
9:08
-0:15
15K
9.32 mi09:11:481:27:189:2229:50
9:37
+0:29
20K
12.43 mi09:43:191:58:499:3431:31
10:09
+0:32
Half
13.10 mi09:50:362:06:069:387:17
10:52
+0:43
25K
15.53 mi10:18:282:33:589:5527:52
11:27
+0:35
30K
18.64 mi10:57:033:12:3310:2038:35
12:26
+0:59
35K
21.75 mi11:41:513:57:2110:5544:48
14:26
+2:00
25.2M
25.20 mi12:25:004:40:3011:0843:09
12:31
-1:55
Finish
26.22 mi12:36:574:52:2711:1011:57
11:44
-0:47

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

9:08 /mi

Average Pace

11:10 /mi

Slowest Pace

14:26 /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

1:58:49

41% of race

Time at Steady Pace

47:06

16% of race

Time at Slower Pace

2:06:32

43% of race

Average Pace: 11:09 /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 mi08:13:3829:089:2329:08
9:23
#966
10K
6.21 mi08:41:5857:289:1528:20
9:08
#915
15K
9.32 mi09:11:481:27:189:2229:50
9:37
#944
20K
12.43 mi09:43:191:58:499:3431:31
10:09
#992
Half
13.10 mi09:50:362:06:069:387:17
10:52
#990
25K
15.53 mi10:18:282:33:589:5527:52
11:27
#1062
30K
18.64 mi10:57:033:12:3310:2038:35
12:26
#1235
35K
21.75 mi11:41:513:57:2110:5544:48
14:26
#1275
25.2M
25.20 mi12:25:004:40:3011:0843:09
12:31
#1274
Finish
26.22 mi12:36:574:52:2711:1011:57
11:44
#1282
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 mi966678831012(Top 52%)700(Top 61%)84(Top 66%)
10K6.21 mi3.10 mi915+51647+3179+4836(Top 43%)591(Top 51%)73(Top 57%)
15K9.32 mi3.11 mi944-29666-1980-11012(Top 52%)700(Top 61%)84(Top 66%)
20K12.43 mi3.11 mi992-48689-2383-31169(Top 60%)791(Top 69%)96(Top 76%)
Half13.10 mi0.67 mi990+2685+4831161(Top 60%)782(Top 68%)92(Top 72%)
25K15.53 mi2.43 mi1062-72726-4186-31365(Top 70%)874(Top 76%)104(Top 82%)
30K18.64 mi3.11 mi1235-173818-9299-131709(Top 88%)1033(Top 90%)119(Top 94%)
35K21.75 mi3.11 mi1275-40826-898+11410(Top 72%)862(Top 75%)100(Top 79%)
25.2M25.20 mi3.45 mi1274+1812+1497+11303(Top 67%)789(Top 68%)94(Top 74%)
Finish26.22 mi1.02 mi1282-8816-498-11473(Top 76%)887(Top 77%)109(Top 86%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×1
+26ft-31ft

Overall

1012

Males

700

M20-24

84

5K→10K

3.1 - 6.2 mi

Top 43%
×2
+38ft-17ft

Overall

836

Males

591

M20-24

73

10K→15K

6.2 - 9.3 mi

Top 52%
×2
+26ft-44ft

Overall

1012

Males

700

M20-24

84

15K→20K

9.3 - 12.4 mi

Top 60%
×1
+35ft-22ft

Overall

1169

Males

791

M20-24

96

20K→Half

12.4 - 13.1 mi

Top 60%
×1
+7ft-13ft

Overall

1161

Males

782

M20-24

92

Half→25K

13.1 - 15.5 mi

Top 70%
×2
+48ft-19ft

Overall

1365

Males

874

M20-24

104

25K→30K

15.5 - 18.6 mi

Top 88%
×2
+38ft-52ft

Overall

1709

Males

1033

M20-24

119

30K→35K

18.6 - 21.8 mi

Top 72%
×2
+39ft-39ft

Overall

1410

Males

862

M20-24

100

35K→25.2M

21.8 - 25.2 mi

Top 67%
×3
+57ft-58ft

Overall

1303

Males

789

M20-24

94

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×1
+17ft-12ft

Overall

1473

Males

887

M20-24

109

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
104
Passed By
420
Net Change
-316
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#966
5K → 10K576+51#966#915
10K → 15K231-29#915#944
15K → 20K351-48#944#992
20K → Half64+2#992#990
Half → 25K173-72#990#1062
25K → 30K0173-173#1062#1235
30K → 35K1353-40#1235#1275
35K → 25.2M2019+1#1275#1274
25.2M → Finish210-8#1274#1282
TOTALS104420-316
📊

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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