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BOSTON MARATHON 2024

Ko Kei Li

Bib: 9833•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 23%
Gender (Male)
#0 / 14578
Top 34%
Masters (Masters Men)
#0 / 9729
Top 22%
Division (M50-54)
#0 / 1935
Top 18%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:15
Rank: #5969
Start → 5K
21:15 | 6:50/mi
10K· 6.21 mi
43:00
Rank: #6306 (-337)
5K → 10K
21:45 | 7:00/mi
15K· 9.32 mi
1:04:54
Rank: #6343 (-37)
10K → 15K
21:54 | 7:03/mi
20K· 12.43 mi
1:27:06
Rank: #6229 (+114)
15K → 20K
22:12 | 7:09/mi
Half· 13.11 mi
1:31:52
Rank: #6182 (+47)
20K → Half
4:46 | 6:59/mi
25K· 15.53 mi
1:49:30
Rank: #6017 (+165)
Half → 25K
17:38 | 7:16/mi
30K· 18.64 mi
2:13:09
Rank: #5810 (+207)
25K → 30K
23:39 | 7:37/mi
20M
2:24:07
Rank: #5852 (-42)
30K → 20M
10:58 | 8:04/mi
21M
2:32:55
Rank: #5859 (-7)
20M → 21M
8:48 | 8:48/mi
35K· 21.75 mi
2:38:42
Rank: #5816 (+43)
21M → 35K
5:47 | 7:44/mi
23M
2:48:56
Rank: #5772 (+44)
35K → 23M
10:14 | 8:10/mi
24M
2:56:58
Rank: #5755 (+17)
23M → 24M
8:02 | 8:02/mi
40K· 24.85 mi
3:04:08
Rank: #5737 (+18)
24M → 40K
7:10 | 8:23/mi
25.2M
3:07:20
Rank: #5742 (-5)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:15:31
Rank: #5794 (-52)
25.2M → Finish
8:11 | 8:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:52
Pace7:00 /mi
2nd Half
Distance13.11 mi
Time1:43:39
Pace7:54 /mi
📊Positive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0021:156:5021:15
6:50
-
10K
6.21 mi11:08:4543:006:5521:45
7:00
+0:10
15K
9.32 mi11:30:391:04:546:5821:54
7:03
+0:03
20K
12.43 mi11:52:511:27:067:0122:12
7:09
+0:06
Half
13.11 mi11:57:371:31:527:004:46
6:59
-0:10
25K
15.53 mi12:15:151:49:307:0317:38
7:16
+0:17
30K
18.64 mi12:38:542:13:097:0923:39
7:37
+0:21
20M
20.00 mi12:49:522:24:077:1210:58
8:04
+0:27
21M
21.00 mi12:58:402:32:557:178:48
8:48
+0:44
35K
21.75 mi13:04:272:38:427:185:47
7:44
-1:04
23M
23.00 mi13:14:412:48:567:2110:14
8:10
+0:26
24M
24.00 mi13:22:432:56:587:228:02
8:02
-0:08
40K
24.85 mi13:29:533:04:087:257:10
8:23
+0:21
25.2M
25.20 mi13:33:053:07:207:263:12
9:17
+0:54
Finish
26.22 mi13:41:163:15:317:288:11
8:02
-1:15

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

6:50 /mi

Average Pace

7:28 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:30

56% of race

Time at Steady Pace

56:37

29% of race

Time at Slower Pace

29:24

15% of race

Average Pace: 7:27 /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 mi10:47:0021:156:5021:15
6:50
#5969
10K
6.21 mi11:08:4543:006:5521:45
7:00
#6306
15K
9.32 mi11:30:391:04:546:5821:54
7:03
#6343
20K
12.43 mi11:52:511:27:067:0122:12
7:09
#6229
Half
13.11 mi11:57:371:31:527:004:46
6:59
#6182
25K
15.53 mi12:15:151:49:307:0317:38
7:16
#6017
30K
18.64 mi12:38:542:13:097:0923:39
7:37
#5810
20M
20.00 mi12:49:522:24:077:1210:58
8:04
#5852
21M
21.00 mi12:58:402:32:557:178:48
8:48
#5859
35K
21.75 mi13:04:272:38:427:185:47
7:44
#5816
23M
23.00 mi13:14:412:48:567:2110:14
8:10
#5772
24M
24.00 mi13:22:432:56:587:228:02
8:02
#5755
40K
24.85 mi13:29:533:04:087:257:10
8:23
#5737
25.2M
25.20 mi13:33:053:07:207:263:12
9:17
#5742
Finish
26.22 mi13:41:163:15:317:288:11
8:02
#5794
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5969542454246496(Top 25%)5732(Top 39%)5732(Top 296%)
10K6.21 mi3.10 mi6306-3375650-2265650-2266667(Top 26%)5884(Top 40%)5884(Top 304%)
15K9.32 mi3.11 mi6343-375674-245674-246496(Top 25%)5732(Top 39%)5732(Top 296%)
20K12.43 mi3.11 mi6229+1145559+1155559+1156069(Top 24%)5364(Top 37%)5364(Top 277%)
Half13.11 mi0.68 mi6182+475519+405519+405664(Top 22%)5085(Top 35%)5085(Top 263%)
25K15.53 mi2.42 mi6017+1655373+1465373+1465669(Top 22%)4959(Top 34%)4959(Top 256%)
30K18.64 mi3.11 mi5810+2075149+2245149+2245679(Top 22%)4793(Top 33%)4793(Top 248%)
20M20.00 mi1.36 mi5852-425157-85157-87146(Top 28%)5514(Top 38%)5514(Top 285%)
21M21.00 mi1.00 mi5859-75132+255132+257591(Top 30%)5577(Top 38%)5577(Top 288%)
35K21.75 mi0.75 mi5816+435083+495083+496197(Top 24%)4793(Top 33%)4793(Top 248%)
23M23.00 mi1.25 mi5772+445016+675016+676638(Top 26%)4881(Top 33%)4881(Top 252%)
24M24.00 mi1.00 mi5755+174975+414975+416791(Top 27%)4867(Top 33%)4867(Top 252%)
40K24.85 mi0.85 mi5737+184927+484927+487733(Top 30%)5233(Top 36%)5233(Top 270%)
25.2M25.20 mi0.35 mi5742-54912+154912+157759(Top 30%)5179(Top 36%)5179(Top 268%)
Finish26.22 mi1.02 mi5794-524926-144926-148677(Top 34%)5749(Top 39%)5749(Top 297%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

6496

Males

5732

M50-54

5732

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

6667

Males

5884

M50-54

5884

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

6496

Males

5732

M50-54

5732

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6069

Males

5364

M50-54

5364

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

5664

Males

5085

M50-54

5085

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

5669

Males

4959

M50-54

4959

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

5679

Males

4793

M50-54

4793

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7146

Males

5514

M50-54

5514

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

7591

Males

5577

M50-54

5577

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6197

Males

4793

M50-54

4793

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

6638

Males

4881

M50-54

4881

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

6791

Males

4867

M50-54

4867

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

7733

Males

5233

M50-54

5233

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7759

Males

5179

M50-54

5179

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

8677

Males

5749

M50-54

5749

Passing Analysis

Category:
Athletes Passed
1682
Passed By
1507
Net Change
+175
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5969
5K → 10K85422-337#5969#6306
10K → 15K126163-37#6306#6343
15K → 20K227113+114#6343#6229
20K → Half525+47#6229#6182
Half → 25K23671+165#6182#6017
25K → 30K308101+207#6017#5810
30K → 20M82124-42#5810#5852
20M → 21M101108-7#5852#5859
21M → 35K8643+43#5859#5816
35K → 23M12985+44#5816#5772
23M → 24M8265+17#5772#5755
24M → 40K9274+18#5755#5737
40K → 25.2M3136-5#5737#5742
25.2M → Finish4597-52#5742#5794
TOTALS16821507+175
📊

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