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BOSTON MARATHON 2023

Kit Cho

Bib: 4895•M

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0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Male)
#0 / 15176
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
23:47
Rank: #11058
Start → 5K
23:47 | 7:39/mi
10K· 6.21 mi
47:03
Rank: #10654 (+404)
5K → 10K
23:16 | 7:29/mi
15K· 9.32 mi
1:10:24
Rank: #10523 (+131)
10K → 15K
23:21 | 7:31/mi
20K· 12.43 mi
1:33:38
Rank: #10132 (+391)
15K → 20K
23:14 | 7:29/mi
Half· 13.11 mi
1:38:37
Rank: #10033 (+99)
20K → Half
4:59 | 7:18/mi
25K· 15.53 mi
1:56:40
Rank: #9740 (+293)
Half → 25K
18:03 | 7:27/mi
30K· 18.64 mi
2:20:22
Rank: #9392 (+348)
25K → 30K
23:42 | 7:38/mi
20M
2:30:44
Rank: #9252 (+140)
30K → 20M
10:22 | 7:38/mi
21M
2:38:50
Rank: #9126 (+126)
20M → 21M
8:06 | 8:06/mi
35K· 21.75 mi
2:44:21
Rank: #9066 (+60)
21M → 35K
5:31 | 7:22/mi
23M
3:02:02
Rank: #11772 (-2706)
35K → 23M
17:41 | 14:07/mi
24M
3:09:45
Rank: #11627 (+145)
23M → 24M
7:43 | 7:43/mi
40K· 24.85 mi
3:16:36
Rank: #11568 (+59)
24M → 40K
6:51 | 8:01/mi
25.2M
3:19:41
Rank: #11559 (+9)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:27:40
Rank: #11503 (+56)
25.2M → Finish
7:59 | 7:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:37
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:49:03
Pace8:19 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0423:477:3923:47
7:39
-
10K
6.21 mi11:14:2047:037:3423:16
7:29
-0:10
15K
9.32 mi11:37:411:10:247:3323:21
7:31
+0:02
20K
12.43 mi12:00:551:33:387:3223:14
7:29
-0:02
Half
13.11 mi12:05:541:38:377:314:59
7:18
-0:11
25K
15.53 mi12:23:571:56:407:3118:03
7:27
+0:09
30K
18.64 mi12:47:392:20:227:3223:42
7:38
+0:11
20M
20.00 mi12:58:012:30:447:3210:22
7:38
0:00
21M
21.00 mi13:06:072:38:507:348:06
8:06
+0:28
35K
21.75 mi13:11:382:44:217:335:31
7:22
-0:44
23M
23.00 mi13:29:193:02:027:5517:41
14:07
+6:45
24M
24.00 mi13:37:023:09:457:547:43
7:43
-6:24
40K
24.85 mi13:43:533:16:367:556:51
8:01
+0:18
25.2M
25.20 mi13:46:583:19:417:553:05
8:56
+0:55
Finish
26.22 mi13:54:573:27:407:567:59
7:50
-1:06

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

7:18 /mi

Average Pace

7:56 /mi

Slowest Pace

14:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:06:54

90% of race

Time at Slower Pace

20:46

10% of race

Average Pace: 7:55 /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 mi10:51:0423:477:3923:47
7:39
#11058
10K
6.21 mi11:14:2047:037:3423:16
7:29
#10654
15K
9.32 mi11:37:411:10:247:3323:21
7:31
#10523
20K
12.43 mi12:00:551:33:387:3223:14
7:29
#10132
Half
13.11 mi12:05:541:38:377:314:59
7:18
#10033
25K
15.53 mi12:23:571:56:407:3118:03
7:27
#9740
30K
18.64 mi12:47:392:20:227:3223:42
7:38
#9392
20M
20.00 mi12:58:012:30:447:3210:22
7:38
#9252
21M
21.00 mi13:06:072:38:507:348:06
8:06
#9126
35K
21.75 mi13:11:382:44:217:335:31
7:22
#9066
23M
23.00 mi13:29:193:02:027:5517:41
14:07
#11772
24M
24.00 mi13:37:023:09:457:547:43
7:43
#11627
40K
24.85 mi13:43:533:16:367:556:51
8:01
#11568
25.2M
25.20 mi13:46:583:19:417:553:05
8:56
#11559
Finish
26.22 mi13:54:573:27:407:567:59
7:50
#11503
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi110588685868510302(Top 39%)8308(Top 55%)8308(Top 157%)
10K6.21 mi3.10 mi10654+4048495+1908495+19010361(Top 39%)8367(Top 55%)8367(Top 158%)
15K9.32 mi3.11 mi10523+1318435+608435+6010302(Top 39%)8308(Top 55%)8308(Top 157%)
20K12.43 mi3.11 mi10132+3918231+2048231+2049149(Top 34%)7592(Top 50%)7592(Top 144%)
Half13.11 mi0.68 mi10033+998170+618170+618655(Top 33%)7319(Top 48%)7319(Top 138%)
25K15.53 mi2.42 mi9740+2937991+1797991+1798370(Top 31%)7049(Top 46%)7049(Top 133%)
30K18.64 mi3.11 mi9392+3487733+2587733+2588153(Top 31%)6780(Top 45%)6780(Top 128%)
20M20.00 mi1.36 mi9252+1407626+1077626+1077689(Top 29%)6405(Top 42%)6405(Top 121%)
21M21.00 mi1.00 mi9126+1267529+977529+978016(Top 30%)6493(Top 43%)6493(Top 123%)
35K21.75 mi0.75 mi9066+607487+427487+427655(Top 29%)6297(Top 41%)6297(Top 119%)
23M23.00 mi1.25 mi11772-27068836-13498836-134925904(Top 97%)14781(Top 97%)14781(Top 280%)
24M24.00 mi1.00 mi11627+1458754+828754+829193(Top 35%)6996(Top 46%)6996(Top 132%)
40K24.85 mi0.85 mi11568+598703+518703+5110116(Top 38%)7397(Top 49%)7397(Top 140%)
25.2M25.20 mi0.35 mi11559+98690+138690+1312120(Top 46%)8314(Top 55%)8314(Top 157%)
Finish26.22 mi1.02 mi11503+568634+568634+5610924(Top 41%)7761(Top 51%)7761(Top 147%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21stories
+97ft-345ft

Overall

10302

Males

8308

M18-39

8308

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10361

Males

8367

M18-39

8367

10K→15K

6.2 - 9.3 mi

Top 39%
×3stories
+67ft-78ft

Overall

10302

Males

8308

M18-39

8308

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9149

Males

7592

M18-39

7592

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

8655

Males

7319

M18-39

7319

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8370

Males

7049

M18-39

7049

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8153

Males

6780

M18-39

6780

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

7689

Males

6405

M18-39

6405

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8016

Males

6493

M18-39

6493

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

7655

Males

6297

M18-39

6297

35K→23M

21.8 - 23.0 mi

Top 97%
×5stories
+23ft-63ft

Overall

25904

Males

14781

M18-39

14781

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9193

Males

6996

M18-39

6996

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10116

Males

7397

M18-39

7397

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12120

Males

8314

M18-39

8314

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

10924

Males

7761

M18-39

7761

Passing Analysis

Category:
Athletes Passed
2742*
Passed By
3185
Net Change
-445
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11058
5K → 10K528124+404#11058#10654
10K → 15K268137+131#10654#10523
15K → 20K405*14+391#10523#10132
20K → Half102*3+99#10132#10033
Half → 25K301*8+293#10033#9740
25K → 30K378*30+348#9740#9392
30K → 20M15616+140#9392#9252
20M → 21M14822+126#9252#9126
21M → 35K7414+60#9126#9066
35K → 23M12705-2706#9066#11772
23M → 24M15510+145#11772#11627
24M → 40K9132+59#11627#11568
40K → 25.2M3829+9#11568#11559
25.2M → Finish9741+56#11559#11503
TOTALS2742*3185-445

* 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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing