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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management
SHAMROCK MARATHON 2025

Matthew Lemaster

Bib: 615 •M •Age: 30

Baltimore, MD

Shamrock Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 1949
Top 30%
Gender (Male)
#0 / 1153
Top 36%
Age Group (M30-34)
#0 / 185
Top 37%
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
28:09
3.11 mi
Rank: #807
Start → 5K
28:09 | 9:04/mi
10K
54:27
6.21 mi
Rank: #659 (+148)
5K → 10K
26:18 | 8:28/mi
15K
1:20:55
9.32 mi
Rank: #614 (+45)
10K → 15K
26:28 | 8:32/mi
20K
1:47:32
12.43 mi
Rank: #582 (+32)
15K → 20K
26:37 | 8:35/mi
Half
1:53:45
13.10 mi
Rank: #577 (+5)
20K → Half
6:13 | 9:16/mi
25K
2:15:43
15.53 mi
Rank: #582 (-5)
Half → 25K
21:58 | 9:02/mi
30K
2:40:12
18.64 mi
Rank: #562 (+20)
25K → 30K
24:29 | 7:53/mi
35K
3:13:03
21.75 mi
Rank: #547 (+15)
30K → 35K
32:51 | 10:35/mi
25.2M
3:49:11
25.20 mi
Rank: #594 (-47)
35K → 25.2M
36:08 | 10:29/mi
Finish
3:58:15
26.22 mi
Rank: #590 (+4)
25.2M → Finish
9:04 | 8:54/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.10 mi
Time1:53:45
Pace8:42 /mi
2nd Half
Distance13.12 mi
Time2:04:30
Pace9:30 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:02:2928:099:0428:09
9:04
-
10K
6.21 mi08:28:4754:278:4626:18
8:28
-0:36
15K
9.32 mi08:55:151:20:558:4126:28
8:32
+0:04
20K
12.43 mi09:21:521:47:328:4026:37
8:35
+0:03
Half
13.10 mi09:28:051:53:458:426:13
9:16
+0:41
25K
15.53 mi09:50:032:15:438:4521:58
9:02
-0:14
30K
18.64 mi10:14:322:40:128:3624:29
7:53
-1:09
35K
21.75 mi10:47:233:13:038:5332:51
10:35
+2:42
25.2M
25.20 mi11:23:313:49:119:0636:08
10:29
-0:06
Finish
26.22 mi11:32:353:58:159:069:04
8:54
-1:35

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

7:53 /mi

Average Pace

9:06 /mi

Slowest Pace

10:35 /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

1:43:52

44% of race

Time at Steady Pace

1:05:24

27% of race

Time at Slower Pace

1:08:59

29% of race

Average Pace: 9:05 /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 mi08:02:2928:099:0428:09
9:04
#807
10K
6.21 mi08:28:4754:278:4626:18
8:28
#659
15K
9.32 mi08:55:151:20:558:4126:28
8:32
#614
20K
12.43 mi09:21:521:47:328:4026:37
8:35
#582
Half
13.10 mi09:28:051:53:458:426:13
9:16
#577
25K
15.53 mi09:50:032:15:438:4521:58
9:02
#582
30K
18.64 mi10:14:322:40:128:3624:29
7:53
#562
35K
21.75 mi10:47:233:13:038:5332:51
10:35
#547
25.2M
25.20 mi11:23:313:49:119:0636:08
10:29
#594
Finish
26.22 mi11:32:353:58:159:069:04
8:54
#590
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
5K3.11 mi3.11 mi807575102512(Top 26%)385(Top 33%)67(Top 36%)
10K6.21 mi3.10 mi659+148479+9681+21506(Top 26%)383(Top 33%)66(Top 36%)
15K9.32 mi3.11 mi614+45451+2873+8512(Top 26%)385(Top 33%)67(Top 36%)
20K12.43 mi3.11 mi582+32432+1970+3544(Top 28%)403(Top 35%)71(Top 38%)
Half13.10 mi0.67 mi577+5430+270580(Top 30%)432(Top 37%)77(Top 42%)
25K15.53 mi2.43 mi582-5428+268+2591(Top 30%)431(Top 37%)66(Top 36%)
30K18.64 mi3.11 mi562+20410+1864+4525(Top 27%)383(Top 33%)64(Top 35%)
35K21.75 mi3.11 mi547+15395+1564569(Top 29%)397(Top 34%)63(Top 34%)
25.2M25.20 mi3.45 mi594-47418-2370-6752(Top 39%)477(Top 41%)82(Top 44%)
Finish26.22 mi1.02 mi590+4414+469+1552(Top 28%)363(Top 31%)55(Top 30%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×1
+26ft-31ft

Overall

512

Males

385

M30-34

67

5K→10K

3.1 - 6.2 mi

Top 26%
×2
+38ft-17ft

Overall

506

Males

383

M30-34

66

10K→15K

6.2 - 9.3 mi

Top 26%
×2
+26ft-44ft

Overall

512

Males

385

M30-34

67

15K→20K

9.3 - 12.4 mi

Top 28%
×1
+35ft-22ft

Overall

544

Males

403

M30-34

71

20K→Half

12.4 - 13.1 mi

Top 30%
×1
+7ft-13ft

Overall

580

Males

432

M30-34

77

Half→25K

13.1 - 15.5 mi

Top 30%
×2
+48ft-19ft

Overall

591

Males

431

M30-34

66

25K→30K

15.5 - 18.6 mi

Top 27%
×2
+38ft-52ft

Overall

525

Males

383

M30-34

64

30K→35K

18.6 - 21.8 mi

Top 29%
×2
+39ft-39ft

Overall

569

Males

397

M30-34

63

35K→25.2M

21.8 - 25.2 mi

Top 39%
×3
+57ft-58ft

Overall

752

Males

477

M30-34

82

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×1
+17ft-12ft

Overall

552

Males

363

M30-34

55

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
330
Passed By
113
Net Change
+217
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#807
5K → 10K1480+148#807#659
10K → 15K461+45#659#614
15K → 20K342+32#614#582
20K → Half105+5#582#577
Half → 25K1823-5#577#582
25K → 30K277+20#582#562
30K → 35K3116+15#562#547
35K → 25.2M956-47#547#594
25.2M → Finish73+4#594#590
TOTALS330113+217
📊

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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