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BOSTON MARATHON 2023

Samuel Cho

Bib: 6680•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 22%
Gender (Male)
#0 / 15176
Top 35%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:07
Rank: #4654
Start → 5K
21:07 | 6:48/mi
10K· 6.21 mi
42:05
Rank: #4726 (-72)
5K → 10K
20:58 | 6:45/mi
15K· 9.32 mi
1:03:15
Rank: #4870 (-144)
10K → 15K
21:10 | 6:49/mi
20K· 12.43 mi
1:24:47
Rank: #5048 (-178)
15K → 20K
21:32 | 6:56/mi
Half· 13.11 mi
1:29:28
Rank: #5109 (-61)
20K → Half
4:41 | 6:52/mi
25K· 15.53 mi
1:46:41
Rank: #5347 (-238)
Half → 25K
17:13 | 7:06/mi
30K· 18.64 mi
2:09:27
Rank: #5493 (-146)
25K → 30K
22:46 | 7:20/mi
20M
2:19:38
Rank: #5554 (-61)
30K → 20M
10:11 | 7:30/mi
21M
2:27:36
Rank: #5590 (-36)
20M → 21M
7:58 | 7:58/mi
35K· 21.75 mi
2:33:04
Rank: #5617 (-27)
21M → 35K
5:28 | 7:18/mi
23M
2:42:48
Rank: #5675 (-58)
35K → 23M
9:44 | 7:46/mi
24M
2:50:20
Rank: #5722 (-47)
23M → 24M
7:32 | 7:32/mi
40K· 24.85 mi
2:56:45
Rank: #5709 (+13)
24M → 40K
6:25 | 7:30/mi
25.2M
2:59:37
Rank: #5715 (-6)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:07:35
Rank: #5840 (-125)
25.2M → Finish
7:58 | 7:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:28
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:38:07
Pace7:29 /mi
📊Positive Split: 9.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:4621:076:4821:07
6:48
-
10K
6.21 mi10:45:4442:056:4620:58
6:45
-0:03
15K
9.32 mi11:06:541:03:156:4721:10
6:49
+0:04
20K
12.43 mi11:28:261:24:476:4921:32
6:56
+0:07
Half
13.11 mi11:33:071:29:286:494:41
6:52
-0:04
25K
15.53 mi11:50:201:46:416:5217:13
7:06
+0:14
30K
18.64 mi12:13:062:09:276:5722:46
7:20
+0:14
20M
20.00 mi12:23:172:19:386:5910:11
7:30
+0:10
21M
21.00 mi12:31:152:27:367:027:58
7:58
+0:28
35K
21.75 mi12:36:432:33:047:025:28
7:18
-0:40
23M
23.00 mi12:46:272:42:487:059:44
7:46
+0:28
24M
24.00 mi12:53:592:50:207:067:32
7:32
-0:14
40K
24.85 mi13:00:242:56:457:076:25
7:30
-0:02
25.2M
25.20 mi13:03:162:59:377:082:52
8:19
+0:49
Finish
26.22 mi13:11:143:07:357:107:58
7:49
-0:30

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

6:45 /mi

Average Pace

7:10 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:41

57% of race

Time at Steady Pace

52:22

28% of race

Time at Slower Pace

28:32

15% of race

Average Pace: 7:09 /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 mi10:24:4621:076:4821:07
6:48
#4654
10K
6.21 mi10:45:4442:056:4620:58
6:45
#4726
15K
9.32 mi11:06:541:03:156:4721:10
6:49
#4870
20K
12.43 mi11:28:261:24:476:4921:32
6:56
#5048
Half
13.11 mi11:33:071:29:286:494:41
6:52
#5109
25K
15.53 mi11:50:201:46:416:5217:13
7:06
#5347
30K
18.64 mi12:13:062:09:276:5722:46
7:20
#5493
20M
20.00 mi12:23:172:19:386:5910:11
7:30
#5554
21M
21.00 mi12:31:152:27:367:027:58
7:58
#5590
35K
21.75 mi12:36:432:33:047:025:28
7:18
#5617
23M
23.00 mi12:46:272:42:487:059:44
7:46
#5675
24M
24.00 mi12:53:592:50:207:067:32
7:32
#5722
40K
24.85 mi13:00:242:56:457:076:25
7:30
#5709
25.2M
25.20 mi13:03:162:59:377:082:52
8:19
#5715
Finish
26.22 mi13:11:143:07:357:107:58
7:49
#5840
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4654433743375252(Top 20%)4856(Top 32%)4856(Top 92%)
10K6.21 mi3.10 mi4726-724407-704407-704813(Top 18%)4470(Top 29%)4470(Top 85%)
15K9.32 mi3.11 mi4870-1444532-1254532-1255252(Top 20%)4856(Top 32%)4856(Top 92%)
20K12.43 mi3.11 mi5048-1784688-1564688-1565551(Top 21%)5106(Top 34%)5106(Top 97%)
Half13.11 mi0.68 mi5109-614740-524740-525771(Top 22%)5303(Top 35%)5303(Top 100%)
25K15.53 mi2.42 mi5347-2384945-2054945-2056108(Top 23%)5521(Top 36%)5521(Top 104%)
30K18.64 mi3.11 mi5493-1465060-1155060-1156175(Top 23%)5495(Top 36%)5495(Top 104%)
20M20.00 mi1.36 mi5554-615104-445104-446716(Top 25%)5776(Top 38%)5776(Top 109%)
21M21.00 mi1.00 mi5590-365127-235127-237100(Top 27%)5916(Top 39%)5916(Top 112%)
35K21.75 mi0.75 mi5617-275149-225149-227123(Top 27%)5963(Top 39%)5963(Top 113%)
23M23.00 mi1.25 mi5675-585175-265175-268194(Top 31%)6512(Top 43%)6512(Top 123%)
24M24.00 mi1.00 mi5722-475198-235198-237882(Top 30%)6230(Top 41%)6230(Top 118%)
40K24.85 mi0.85 mi5709+135174+245174+246720(Top 25%)5457(Top 36%)5457(Top 103%)
25.2M25.20 mi0.35 mi5715-65173+15173+18277(Top 31%)6309(Top 42%)6309(Top 119%)
Finish26.22 mi1.02 mi5840-1255259-865259-8610754(Top 40%)7665(Top 51%)7665(Top 145%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5252

Males

4856

M18-39

4856

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4813

Males

4470

M18-39

4470

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5252

Males

4856

M18-39

4856

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5551

Males

5106

M18-39

5106

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

5771

Males

5303

M18-39

5303

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6108

Males

5521

M18-39

5521

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6175

Males

5495

M18-39

5495

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6716

Males

5776

M18-39

5776

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7100

Males

5916

M18-39

5916

21M→35K

21.0 - 21.8 mi

Top 27%
×7stories
+17ft-86ft

Overall

7123

Males

5963

M18-39

5963

35K→23M

21.8 - 23.0 mi

Top 31%
×5stories
+23ft-63ft

Overall

8194

Males

6512

M18-39

6512

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

7882

Males

6230

M18-39

6230

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6720

Males

5457

M18-39

5457

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8277

Males

6309

M18-39

6309

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

10754

Males

7665

M18-39

7665

Passing Analysis

Category:
Athletes Passed
710
Passed By
1896
Net Change
-1186
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4654
5K → 10K176248-72#4654#4726
10K → 15K61205-144#4726#4870
15K → 20K60238-178#4870#5048
20K → Half364-61#5048#5109
Half → 25K46284-238#5109#5347
25K → 30K81227-146#5347#5493
30K → 20M3899-61#5493#5554
20M → 21M3874-36#5554#5590
21M → 35K2754-27#5590#5617
35K → 23M56114-58#5617#5675
23M → 24M3279-47#5675#5722
24M → 40K5239+13#5722#5709
40K → 25.2M1723-6#5709#5715
25.2M → Finish23148-125#5715#5840
TOTALS7101896-1186
📊

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing