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SHAMROCK MARATHON 2026

Byounggu Ko

Bib: 124•M•Age: 54

alexandria, VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 2429
Top 4%
Gender (Male)
#0 / 1480
Top 6%
Masters (Masters Men)
#0 / 477
Top 4%
Division (M50-54)
#0 / 77
Top 4%
Race Day Weather
55°/45°F
few clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:10
Rank: #128
Start → 5K
21:10 | 6:49/mi
10K· 6.21 mi
42:29
Rank: #132 (-4)
5K → 10K
21:19 | 6:52/mi
15K· 9.32 mi
1:03:50
Rank: #135 (-3)
10K → 15K
21:21 | 6:52/mi
20K· 12.43 mi
1:25:07
Rank: #126 (+9)
15K → 20K
21:17 | 6:51/mi
Half· 13.10 mi
1:29:49
Rank: #124 (+2)
20K → Half
4:42 | 7:00/mi
30K· 18.64 mi
2:09:05
Rank: #124
Half → 30K
39:16 | 7:05/mi
35K· 21.75 mi
2:34:15
Rank: #121 (+3)
30K → 35K
25:10 | 8:06/mi
25.2M
3:00:52
Rank: #100 (+21)
35K → 25.2M
26:37 | 7:43/mi
Finish· 26.22 mi
3:08:16
Rank: #100
25.2M → Finish
7:24 | 7:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.10 mi
Time1:29:49
Pace6:51 /mi
2nd Half
Distance13.12 mi
Time1:38:27
Pace7:30 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi07:51:1421:106:4921:10
6:49
-
10K
6.21 mi08:12:3342:296:5021:19
6:52
+0:03
15K
9.32 mi08:33:541:03:506:5121:21
6:52
0:00
20K
12.43 mi08:55:111:25:076:5121:17
6:51
-0:01
Half
13.10 mi08:59:531:29:496:514:42
7:00
+0:09
30K
18.64 mi09:39:092:09:056:5539:16
7:05
+0:05
35K
21.75 mi10:04:192:34:157:0625:10
8:06
+1:01
25.2M
25.20 mi10:30:563:00:527:1126:37
7:43
-0:23
Finish
26.22 mi10:38:203:08:167:117:24
7:16
-0:27

Checkpoints & Pacing

📈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

6:49 /mi

Average Pace

7:11 /mi

Slowest Pace

8:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:29

72% of race

Time at Steady Pace

26:37

14% of race

Time at Slower Pace

25:10

13% of race

Average Pace: 7:11 /mi

Loading chart...
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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi07:51:1421:106:4921:10
6:49
#128
10K
6.21 mi08:12:3342:296:5021:19
6:52
#132
15K
9.32 mi08:33:541:03:506:5121:21
6:52
#135
20K
12.43 mi08:55:111:25:076:5121:17
6:51
#126
Half
13.10 mi08:59:531:29:496:514:42
7:00
#124
30K
18.64 mi09:39:092:09:056:5539:16
7:05
#124
35K
21.75 mi10:04:192:34:157:0625:10
8:06
#121
25.2M
25.20 mi10:30:563:00:527:1126:37
7:43
#100
Finish
26.22 mi10:38:203:08:167:117:24
7:16
#100
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi1281252139(Top 6%)136(Top 9%)3(Top 4%)
10K6.21 mi3.10 mi132-4129-43-1137(Top 6%)135(Top 9%)3(Top 4%)
15K9.32 mi3.11 mi135-3133-43139(Top 6%)136(Top 9%)3(Top 4%)
20K12.43 mi3.11 mi126+9124+93113(Top 5%)110(Top 7%)3(Top 4%)
Half13.10 mi0.67 mi124+2122+23134(Top 6%)130(Top 9%)3(Top 4%)
30K18.64 mi5.54 mi124121+13142(Top 6%)134(Top 9%)4(Top 5%)
35K21.75 mi3.11 mi121+3116+53142(Top 6%)128(Top 9%)6(Top 8%)
25.2M25.20 mi3.45 mi100+2195+213103(Top 4%)93(Top 6%)5(Top 7%)
Finish26.22 mi1.02 mi10094+13126(Top 5%)108(Top 7%)4(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×1story
+26ft-31ft

Overall

139

Males

136

M50-54

4

5K→10K

3.1 - 6.2 mi

Top 6%
×2stories
+38ft-17ft

Overall

137

Males

135

M50-54

4

10K→15K

6.2 - 9.3 mi

Top 6%
×2stories
+26ft-44ft

Overall

139

Males

136

M50-54

4

15K→20K

9.3 - 12.4 mi

Top 5%
×1story
+35ft-22ft

Overall

113

Males

110

M50-54

4

20K→Half

12.4 - 13.1 mi

Top 6%
×1human
+7ft-13ft

Overall

134

Males

130

M50-54

4

Half→30K

13.1 - 18.6 mi

Top 6%
×2stories
+86ft-72ft

Overall

142

Males

134

M50-54

5

30K→35K

18.6 - 21.8 mi

Top 6%
×2humans
+39ft-39ft

Overall

142

Males

128

M50-54

7

35K→25.2M

21.8 - 25.2 mi

Top 4%
×3stories
+57ft-58ft

Overall

103

Males

93

M50-54

6

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×1human
+17ft-12ft

Overall

126

Males

108

M50-54

5

Passing Analysis

Category:
Athletes Passed
63*
Passed By
35
Net Change
+28
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#128
5K → 10K59-4#128#132
10K → 15K58-3#132#135
15K → 20K101+9#135#126
20K → Half2*0+2#126#124
Half → 30K10*100#124#124
30K → 35K96+3#124#121
35K → 25.2M21*0+21#121#100
25.2M → Finish110#100#100
TOTALS63*35+28

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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