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BOSTON MARATHON 2024

Ka Hei Ngai

Bib: 2969•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 11%
Gender (Male)
#0 / 14578
Top 18%
Masters (Masters Men)
#0 / 9729
Top 8%
Division (M40-44)
#0 / 2009
Top 22%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:49
Rank: #4810
Start → 5K
20:49 | 6:42/mi
10K· 6.21 mi
41:46
Rank: #4724 (+86)
5K → 10K
20:57 | 6:45/mi
15K· 9.32 mi
1:02:58
Rank: #4771 (-47)
10K → 15K
21:12 | 6:49/mi
20K· 12.43 mi
1:24:28
Rank: #4707 (+64)
15K → 20K
21:30 | 6:55/mi
Half· 13.11 mi
1:29:02
Rank: #4643 (+64)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:45:44
Rank: #4394 (+249)
Half → 25K
16:42 | 6:53/mi
30K· 18.64 mi
2:07:58
Rank: #4180 (+214)
25K → 30K
22:14 | 7:09/mi
20M
2:17:21
Rank: #3865 (+315)
30K → 20M
9:23 | 6:54/mi
21M
2:24:37
Rank: #3630 (+235)
20M → 21M
7:16 | 7:16/mi
35K· 21.75 mi
2:29:37
Rank: #3515 (+115)
21M → 35K
5:00 | 6:41/mi
23M
2:38:09
Rank: #3271 (+244)
35K → 23M
8:32 | 6:49/mi
24M
2:44:46
Rank: #3114 (+157)
23M → 24M
6:37 | 6:37/mi
40K· 24.85 mi
2:50:34
Rank: #2980 (+134)
24M → 40K
5:48 | 6:47/mi
25.2M
2:53:04
Rank: #2910 (+70)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:59:28
Rank: #2765 (+145)
25.2M → Finish
6:24 | 6:17/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:02
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:30:26
Pace6:54 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:5420:496:4220:49
6:42
-
10K
6.21 mi10:42:5141:466:4320:57
6:45
+0:03
15K
9.32 mi11:04:031:02:586:4521:12
6:49
+0:04
20K
12.43 mi11:25:331:24:286:4821:30
6:55
+0:06
Half
13.11 mi11:30:071:29:026:474:34
6:42
-0:13
25K
15.53 mi11:46:491:45:446:4816:42
6:53
+0:11
30K
18.64 mi12:09:032:07:586:5222:14
7:09
+0:16
20M
20.00 mi12:18:262:17:216:529:23
6:54
-0:15
21M
21.00 mi12:25:422:24:376:537:16
7:16
+0:22
35K
21.75 mi12:30:422:29:376:535:00
6:41
-0:35
23M
23.00 mi12:39:142:38:096:538:32
6:49
+0:08
24M
24.00 mi12:45:512:44:466:526:37
6:37
-0:12
40K
24.85 mi12:51:392:50:346:525:48
6:47
+0:10
25.2M
25.20 mi12:54:092:53:046:522:30
7:15
+0:28
Finish
26.22 mi13:00:332:59:286:516:24
6:17
-0:58

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

6:17 /mi

Average Pace

6:51 /mi

Slowest Pace

7:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:58

70% of race

Time at Steady Pace

53:30

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:51 /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 mi10:21:5420:496:4220:49
6:42
#4810
10K
6.21 mi10:42:5141:466:4320:57
6:45
#4724
15K
9.32 mi11:04:031:02:586:4521:12
6:49
#4771
20K
12.43 mi11:25:331:24:286:4821:30
6:55
#4707
Half
13.11 mi11:30:071:29:026:474:34
6:42
#4643
25K
15.53 mi11:46:491:45:446:4816:42
6:53
#4394
30K
18.64 mi12:09:032:07:586:5222:14
7:09
#4180
20M
20.00 mi12:18:262:17:216:529:23
6:54
#3865
21M
21.00 mi12:25:422:24:376:537:16
7:16
#3630
35K
21.75 mi12:30:422:29:376:535:00
6:41
#3515
23M
23.00 mi12:39:142:38:096:538:32
6:49
#3271
24M
24.00 mi12:45:512:44:466:526:37
6:37
#3114
40K
24.85 mi12:51:392:50:346:525:48
6:47
#2980
25.2M
25.20 mi12:54:092:53:046:522:30
7:15
#2910
Finish
26.22 mi13:00:332:59:286:516:24
6:17
#2765
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4810446544654931(Top 19%)4548(Top 31%)4548(Top 226%)
10K6.21 mi3.10 mi4724+864401+644401+644671(Top 18%)4341(Top 30%)4341(Top 216%)
15K9.32 mi3.11 mi4771-474435-344435-344931(Top 19%)4548(Top 31%)4548(Top 226%)
20K12.43 mi3.11 mi4707+644373+624373+624747(Top 19%)4358(Top 30%)4358(Top 217%)
Half13.11 mi0.68 mi4643+644315+584315+583677(Top 14%)3447(Top 24%)3447(Top 172%)
25K15.53 mi2.42 mi4394+2494096+2194096+2193696(Top 14%)3437(Top 24%)3437(Top 171%)
30K18.64 mi3.11 mi4180+2143894+2023894+2023590(Top 14%)3276(Top 22%)3276(Top 163%)
20M20.00 mi1.36 mi3865+3153607+2873607+2871982(Top 8%)1864(Top 13%)1864(Top 93%)
21M21.00 mi1.00 mi3630+2353390+2173390+2171761(Top 7%)1650(Top 11%)1650(Top 82%)
35K21.75 mi0.75 mi3515+1153281+1093281+1091854(Top 7%)1721(Top 12%)1721(Top 86%)
23M23.00 mi1.25 mi3271+2443053+2283053+2281350(Top 5%)1272(Top 9%)1272(Top 63%)
24M24.00 mi1.00 mi3114+1572912+1412912+1411207(Top 5%)1128(Top 8%)1128(Top 56%)
40K24.85 mi0.85 mi2980+1342787+1252787+1251270(Top 5%)1171(Top 8%)1171(Top 58%)
25.2M25.20 mi0.35 mi2910+702717+702717+70972(Top 4%)899(Top 6%)899(Top 45%)
Finish26.22 mi1.02 mi2765+1452584+1332584+133889(Top 3%)824(Top 6%)824(Top 41%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

4931

Males

4548

M40-44

4548

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4671

Males

4341

M40-44

4341

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

4931

Males

4548

M40-44

4548

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

4747

Males

4358

M40-44

4358

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3677

Males

3447

M40-44

3447

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3696

Males

3437

M40-44

3437

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3590

Males

3276

M40-44

3276

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

1982

Males

1864

M40-44

1864

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1761

Males

1650

M40-44

1650

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1854

Males

1721

M40-44

1721

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1350

Males

1272

M40-44

1272

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1207

Males

1128

M40-44

1128

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1270

Males

1171

M40-44

1171

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

972

Males

899

M40-44

899

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

889

Males

824

M40-44

824

Passing Analysis

Category:
Athletes Passed
2617
Passed By
572
Net Change
+2045
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4810
5K → 10K232146+86#4810#4724
10K → 15K114161-47#4724#4771
15K → 20K198134+64#4771#4707
20K → Half706+64#4707#4643
Half → 25K27526+249#4643#4394
25K → 30K30187+214#4394#4180
30K → 20M3150+315#4180#3865
20M → 21M2372+235#3865#3630
21M → 35K1172+115#3630#3515
35K → 23M2440+244#3515#3271
23M → 24M1581+157#3271#3114
24M → 40K1351+134#3114#2980
40K → 25.2M700+70#2980#2910
25.2M → Finish1516+145#2910#2765
TOTALS2617572+2045
📊

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