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BOSTON MARATHON 2024

James Ngai

Bib: 6803•M

WA

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 35%
Gender (Male)
#0 / 14578
Top 46%
Division (M18-39)
#0 / 4849
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
23:46
Rank: #11905
Start → 5K
23:46 | 7:39/mi
10K· 6.21 mi
48:16
Rank: #12618 (-713)
5K → 10K
24:30 | 7:53/mi
15K· 9.32 mi
1:13:02
Rank: #12804 (-186)
10K → 15K
24:46 | 7:58/mi
20K· 12.43 mi
1:37:38
Rank: #12315 (+489)
15K → 20K
24:36 | 7:55/mi
Half· 13.11 mi
1:42:58
Rank: #12255 (+60)
20K → Half
5:20 | 7:49/mi
25K· 15.53 mi
2:02:00
Rank: #11637 (+618)
Half → 25K
19:02 | 7:51/mi
30K· 18.64 mi
2:26:37
Rank: #10709 (+928)
25K → 30K
24:37 | 7:55/mi
20M
2:37:27
Rank: #10310 (+399)
30K → 20M
10:50 | 7:58/mi
21M
2:45:37
Rank: #9843 (+467)
20M → 21M
8:10 | 8:10/mi
35K· 21.75 mi
2:51:30
Rank: #9706 (+137)
21M → 35K
5:53 | 7:52/mi
23M
3:01:36
Rank: #9365 (+341)
35K → 23M
10:06 | 8:04/mi
24M
3:09:39
Rank: #9220 (+145)
23M → 24M
8:03 | 8:03/mi
40K· 24.85 mi
3:16:27
Rank: #9019 (+201)
24M → 40K
6:48 | 7:57/mi
25.2M
3:19:37
Rank: #8965 (+54)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:27:45
Rank: #8918 (+47)
25.2M → Finish
8:08 | 7:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:58
Pace7:51 /mi
2nd Half
Distance13.11 mi
Time1:44:47
Pace8:00 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:29:5723:467:3923:46
7:39
-
10K
6.21 mi10:54:2748:167:4624:30
7:53
+0:14
15K
9.32 mi11:19:131:13:027:5024:46
7:58
+0:05
20K
12.43 mi11:43:491:37:387:5124:36
7:55
-0:03
Half
13.11 mi11:49:091:42:587:515:20
7:49
-0:06
25K
15.53 mi12:08:112:02:007:5119:02
7:51
+0:02
30K
18.64 mi12:32:482:26:377:5224:37
7:55
+0:04
20M
20.00 mi12:43:382:37:277:5210:50
7:58
+0:03
21M
21.00 mi12:51:482:45:377:538:10
8:10
+0:12
35K
21.75 mi12:57:412:51:307:535:53
7:52
-0:18
23M
23.00 mi13:07:473:01:367:5410:06
8:04
+0:12
24M
24.00 mi13:15:503:09:397:548:03
8:03
-0:01
40K
24.85 mi13:22:383:16:277:546:48
7:57
-0:06
25.2M
25.20 mi13:25:483:19:377:553:10
9:11
+1:14
Finish
26.22 mi13:33:563:27:457:568:08
7:59
-1:12

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

7:39 /mi

Average Pace

7:56 /mi

Slowest Pace

9:11 /mi

Loading chart...
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

23:46

11% of race

Time at Steady Pace

2:52:39

83% of race

Time at Slower Pace

11:20

5% 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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:29:5723:467:3923:46
7:39
#11905
10K
6.21 mi10:54:2748:167:4624:30
7:53
#12618
15K
9.32 mi11:19:131:13:027:5024:46
7:58
#12804
20K
12.43 mi11:43:491:37:387:5124:36
7:55
#12315
Half
13.11 mi11:49:091:42:587:515:20
7:49
#12255
25K
15.53 mi12:08:112:02:007:5119:02
7:51
#11637
30K
18.64 mi12:32:482:26:377:5224:37
7:55
#10709
20M
20.00 mi12:43:382:37:277:5210:50
7:58
#10310
21M
21.00 mi12:51:482:45:377:538:10
8:10
#9843
35K
21.75 mi12:57:412:51:307:535:53
7:52
#9706
23M
23.00 mi13:07:473:01:367:5410:06
8:04
#9365
24M
24.00 mi13:15:503:09:397:548:03
8:03
#9220
40K
24.85 mi13:22:383:16:277:546:48
7:57
#9019
25.2M
25.20 mi13:25:483:19:377:553:10
9:11
#8965
Finish
26.22 mi13:33:563:27:457:568:08
7:59
#8918
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi119058801880113232(Top 52%)9265(Top 64%)9265(Top 191%)
10K6.21 mi3.10 mi12618-7139077-2769077-27613312(Top 52%)9337(Top 64%)9337(Top 193%)
15K9.32 mi3.11 mi12804-1869130-539130-5313232(Top 52%)9265(Top 64%)9265(Top 191%)
20K12.43 mi3.11 mi12315+4898893+2378893+23711233(Top 44%)8279(Top 57%)8279(Top 171%)
Half13.11 mi0.68 mi12255+608865+288865+2811396(Top 45%)8335(Top 57%)8335(Top 172%)
25K15.53 mi2.42 mi11637+6188549+3168549+3169236(Top 36%)7096(Top 49%)7096(Top 146%)
30K18.64 mi3.11 mi10709+9288006+5438006+5437435(Top 29%)5889(Top 40%)5889(Top 121%)
20M20.00 mi1.36 mi10310+3997750+2567750+2566601(Top 26%)5224(Top 36%)5224(Top 108%)
21M21.00 mi1.00 mi9843+4677475+2757475+2754792(Top 19%)3972(Top 27%)3972(Top 82%)
35K21.75 mi0.75 mi9706+1377365+1107365+1106952(Top 27%)5213(Top 36%)5213(Top 108%)
23M23.00 mi1.25 mi9365+3417127+2387127+2386089(Top 24%)4583(Top 31%)4583(Top 95%)
24M24.00 mi1.00 mi9220+1457008+1197008+1196894(Top 27%)4930(Top 34%)4930(Top 102%)
40K24.85 mi0.85 mi9019+2016862+1466862+1465566(Top 22%)4115(Top 28%)4115(Top 85%)
25.2M25.20 mi0.35 mi8965+546811+516811+517371(Top 29%)4997(Top 34%)4997(Top 103%)
Finish26.22 mi1.02 mi8918+476742+696742+698405(Top 33%)5614(Top 39%)5614(Top 116%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21stories
+97ft-345ft

Overall

13232

Males

9265

M18-39

9265

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

13312

Males

9337

M18-39

9337

10K→15K

6.2 - 9.3 mi

Top 52%
×3stories
+67ft-78ft

Overall

13232

Males

9265

M18-39

9265

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11233

Males

8279

M18-39

8279

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

11396

Males

8335

M18-39

8335

Half→25K

13.1 - 15.5 mi

Top 36%
×4stories
+66ft-88ft

Overall

9236

Males

7096

M18-39

7096

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

7435

Males

5889

M18-39

5889

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

6601

Males

5224

M18-39

5224

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

4792

Males

3972

M18-39

3972

21M→35K

21.0 - 21.8 mi

Top 27%
×7stories
+17ft-86ft

Overall

6952

Males

5213

M18-39

5213

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6089

Males

4583

M18-39

4583

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

6894

Males

4930

M18-39

4930

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5566

Males

4115

M18-39

4115

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7371

Males

4997

M18-39

4997

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

8405

Males

5614

M18-39

5614

Passing Analysis

Category:
Athletes Passed
4355*
Passed By
1368
Net Change
+2987
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11905
5K → 10K92805-713#11905#12618
10K → 15K162348-186#12618#12804
15K → 20K52233+489#12804#12315
20K → Half7717+60#12315#12255
Half → 25K6257+618#12255#11637
25K → 30K9335+928#11637#10709
30K → 20M4034+399#10709#10310
20M → 21M468*1+467#10310#9843
21M → 35K15518+137#9843#9706
35K → 23M35413+341#9706#9365
23M → 24M17530+145#9365#9220
24M → 40K2109+201#9220#9019
40K → 25.2M6915+54#9019#8965
25.2M → Finish11063+47#8965#8918
TOTALS4355*1368+2987

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

📊

Passing Visuals

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing