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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Brock Dehlin

Bib: 472 •M •Age: 36

Toano, VA

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Gender (Male)
#0 / 1153
Age Group (M35-39)
Official
#0 / 178
Calculated (M35-39)
#0 / 178
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
30:03
3.11 mi
Rank: #1063
Start → 5K
30:03 | 9:41/mi
10K
1:02:14
6.21 mi
Rank: #1171 (-108)
5K → 10K
32:11 | 10:22/mi
15K
1:34:38
9.32 mi
Rank: #1205 (-34)
10K → 15K
32:24 | 10:26/mi
20K
2:08:42
12.43 mi
Rank: #1273 (-68)
15K → 20K
34:04 | 10:58/mi
Half
2:16:46
13.10 mi
Rank: #1294 (-21)
20K → Half
8:04 | 12:02/mi
25K
2:49:50
15.53 mi
Rank: #1401 (-107)
Half → 25K
33:04 | 13:35/mi
30K
3:30:09
18.64 mi
Rank: #1522 (-121)
25K → 30K
40:19 | 12:59/mi
35K
4:16:16
21.75 mi
Rank: #1512 (+10)
30K → 35K
46:07 | 14:51/mi
25.2M
5:18:07
25.20 mi
Rank: #1638 (-126)
35K → 25.2M
1:01:51 | 17:56/mi
Finish
5:30:08
26.22 mi
Rank: #1635 (+3)
25.2M → Finish
12:01 | 11:48/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time2:16:46
Pace10:27 /mi
2nd Half
Distance13.12 mi
Time3:13:22
Pace14:45 /mi
📊Positive Split: 41.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:06:2530:039:4130:03
9:41
-
10K
6.21 mi08:38:361:02:1410:0132:11
10:22
+0:41
15K
9.32 mi09:11:001:34:3810:1032:24
10:26
+0:04
20K
12.43 mi09:45:042:08:4210:2234:04
10:58
+0:32
Half
13.10 mi09:53:082:16:4610:278:04
12:02
+1:04
25K
15.53 mi10:26:122:49:5010:5633:04
13:35
+1:33
30K
18.64 mi11:06:313:30:0911:1740:19
12:59
-0:36
35K
21.75 mi11:52:384:16:1611:4846:07
14:51
+1:52
25.2M
25.20 mi12:54:295:18:0712:381:01:51
17:56
+3:05
Finish
26.22 mi13:06:305:30:0812:3712:01
11:48
-6:08

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

9:41 /mi

Average Pace

12:36 /mi

Slowest Pace

17:56 /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

1:34:38

29% of race

Time at Steady Pace

1:34:28

29% of race

Time at Slower Pace

2:21:02

43% of race

Average Pace: 12:35 /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 mi08:06:2530:039:4130:03
9:41
#1063
10K
6.21 mi08:38:361:02:1410:0132:11
10:22
#1171
15K
9.32 mi09:11:001:34:3810:1032:24
10:26
#1205
20K
12.43 mi09:45:042:08:4210:2234:04
10:58
#1273
Half
13.10 mi09:53:082:16:4610:278:04
12:02
#1294
25K
15.53 mi10:26:122:49:5010:5633:04
13:35
#1401
30K
18.64 mi11:06:313:30:0911:1740:19
12:59
#1522
35K
21.75 mi11:52:384:16:1611:4846:07
14:51
#1512
25.2M
25.20 mi12:54:295:18:0712:381:01:51
17:56
#1638
Finish
26.22 mi13:06:305:30:0812:3712:01
11:48
#1635
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM35-39Seg. OverallSeg. MalesSeg. M35-39
5K3.11 mi3.11 mi10637241121319(Top 68%)875(Top 76%)137(Top 77%)
10K6.21 mi3.10 mi1171-108792-68125-131304(Top 67%)862(Top 75%)138(Top 78%)
15K9.32 mi3.11 mi1205-34811-19131-61319(Top 68%)875(Top 76%)137(Top 77%)
20K12.43 mi3.11 mi1273-68846-35138-71436(Top 74%)921(Top 80%)147(Top 83%)
Half13.10 mi0.67 mi1294-21852-61381495(Top 77%)951(Top 82%)149(Top 84%)
25K15.53 mi2.43 mi1401-107903-51144-61708(Top 88%)1040(Top 90%)163(Top 92%)
30K18.64 mi3.11 mi1522-121964-61155-111770(Top 91%)1069(Top 93%)168(Top 94%)
35K21.75 mi3.11 mi1512+10952+12152+31468(Top 75%)892(Top 77%)138(Top 78%)
25.2M25.20 mi3.45 mi1638-1261012-60159-71918(Top 98%)1136(Top 99%)178(Top 100%)
Finish26.22 mi1.02 mi1635+31010+21591491(Top 77%)894(Top 78%)138(Top 78%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×1
+26ft-31ft

Overall

1319

Males

875

M35-39

137

5K→10K

3.1 - 6.2 mi

Top 67%
×2
+38ft-17ft

Overall

1304

Males

862

M35-39

138

10K→15K

6.2 - 9.3 mi

Top 68%
×2
+26ft-44ft

Overall

1319

Males

875

M35-39

137

15K→20K

9.3 - 12.4 mi

Top 74%
×1
+35ft-22ft

Overall

1436

Males

921

M35-39

147

20K→Half

12.4 - 13.1 mi

Top 77%
×1
+7ft-13ft

Overall

1495

Males

951

M35-39

149

Half→25K

13.1 - 15.5 mi

Top 88%
×2
+48ft-19ft

Overall

1708

Males

1040

M35-39

163

25K→30K

15.5 - 18.6 mi

Top 91%
×2
+38ft-52ft

Overall

1770

Males

1069

M35-39

168

30K→35K

18.6 - 21.8 mi

Top 75%
×2
+39ft-39ft

Overall

1468

Males

892

M35-39

138

35K→25.2M

21.8 - 25.2 mi

Top 98%
×3
+57ft-58ft

Overall

1918

Males

1136

M35-39

178

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×1
+17ft-12ft

Overall

1491

Males

894

M35-39

138

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
57
Passed By
629
Net Change
-572
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1063
5K → 10K4112-108#1063#1171
10K → 15K842-34#1171#1205
15K → 20K573-68#1205#1273
20K → Half829-21#1273#1294
Half → 25K1108-107#1294#1401
25K → 30K1122-121#1401#1522
30K → 35K2616+10#1522#1512
35K → 25.2M0126-126#1512#1638
25.2M → Finish41+3#1638#1635
TOTALS57629-572
📊

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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