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BOSTON MARATHON 2023

William Ngo

Bib: 9196•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 44%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 48%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:57
Rank: #16499
Start → 5K
25:57 | 8:21/mi
10K· 6.21 mi
51:11
Rank: #16081 (+418)
5K → 10K
25:14 | 8:07/mi
15K· 9.32 mi
1:15:42
Rank: #15259 (+822)
10K → 15K
24:31 | 7:53/mi
20K· 12.43 mi
1:40:04
Rank: #14499 (+760)
15K → 20K
24:22 | 7:51/mi
Half· 13.11 mi
1:45:25
Rank: #14429 (+70)
20K → Half
5:21 | 7:50/mi
25K· 15.53 mi
2:04:15
Rank: #13854 (+575)
Half → 25K
18:50 | 7:46/mi
30K· 18.64 mi
2:28:54
Rank: #13196 (+658)
25K → 30K
24:39 | 7:56/mi
20M
2:39:44
Rank: #12930 (+266)
30K → 20M
10:50 | 7:58/mi
21M
2:47:54
Rank: #12618 (+312)
20M → 21M
8:10 | 8:10/mi
35K· 21.75 mi
2:53:48
Rank: #12555 (+63)
21M → 35K
5:54 | 7:53/mi
23M
3:03:43
Rank: #12344 (+211)
35K → 23M
9:55 | 7:55/mi
24M
3:11:23
Rank: #12204 (+140)
23M → 24M
7:40 | 7:40/mi
40K· 24.85 mi
3:18:01
Rank: #12029 (+175)
24M → 40K
6:38 | 7:45/mi
25.2M
3:20:50
Rank: #11937 (+92)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:28:18
Rank: #11712 (+225)
25.2M → Finish
7:28 | 7:20/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:45:25
Pace8:02 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:42:53
Pace7:51 /mi
📊Negative Split: 2.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0625:578:2125:57
8:21
-
10K
6.21 mi11:46:2051:118:1425:14
8:07
-0:14
15K
9.32 mi12:10:511:15:428:0724:31
7:53
-0:14
20K
12.43 mi12:35:131:40:048:0324:22
7:51
-0:02
Half
13.11 mi12:40:341:45:258:025:21
7:50
-0:01
25K
15.53 mi12:59:242:04:158:0018:50
7:46
-0:04
30K
18.64 mi13:24:032:28:547:5924:39
7:56
+0:10
20M
20.00 mi13:34:532:39:447:5910:50
7:58
+0:02
21M
21.00 mi13:43:032:47:548:008:10
8:10
+0:12
35K
21.75 mi13:48:572:53:487:595:54
7:53
-0:17
23M
23.00 mi13:58:523:03:437:599:55
7:55
+0:02
24M
24.00 mi14:06:323:11:237:587:40
7:40
-0:15
40K
24.85 mi14:13:103:18:017:586:38
7:45
+0:05
25.2M
25.20 mi14:15:593:20:507:582:49
8:10
+0:25
Finish
26.22 mi14:23:273:28:187:577:28
7:20
-0:50

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

7:20 /mi

Average Pace

7:57 /mi

Slowest Pace

8:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:08

70% of race

Time at Steady Pace

1:02:10

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:57 /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 mi11:21:0625:578:2125:57
8:21
#16499
10K
6.21 mi11:46:2051:118:1425:14
8:07
#16081
15K
9.32 mi12:10:511:15:428:0724:31
7:53
#15259
20K
12.43 mi12:35:131:40:048:0324:22
7:51
#14499
Half
13.11 mi12:40:341:45:258:025:21
7:50
#14429
25K
15.53 mi12:59:242:04:158:0018:50
7:46
#13854
30K
18.64 mi13:24:032:28:547:5924:39
7:56
#13196
20M
20.00 mi13:34:532:39:447:5910:50
7:58
#12930
21M
21.00 mi13:43:032:47:548:008:10
8:10
#12618
35K
21.75 mi13:48:572:53:487:595:54
7:53
#12555
23M
23.00 mi13:58:523:03:437:599:55
7:55
#12344
24M
24.00 mi14:06:323:11:237:587:40
7:40
#12204
40K
24.85 mi14:13:103:18:017:586:38
7:45
#12029
25.2M
25.20 mi14:15:593:20:507:582:49
8:10
#11937
Finish
26.22 mi14:23:273:28:187:577:28
7:20
#11712
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi16499108731087313429(Top 50%)9666(Top 64%)9666(Top 431%)
10K6.21 mi3.10 mi16081+41810730+14310730+14315659(Top 59%)10579(Top 70%)10579(Top 472%)
15K9.32 mi3.11 mi15259+82210413+31710413+31713429(Top 50%)9666(Top 64%)9666(Top 431%)
20K12.43 mi3.11 mi14499+76010110+30310110+30312085(Top 45%)9050(Top 60%)9050(Top 404%)
Half13.11 mi0.68 mi14429+7010077+3310077+3313017(Top 49%)9474(Top 62%)9474(Top 423%)
25K15.53 mi2.42 mi13854+5759812+2659812+26510848(Top 41%)8428(Top 56%)8428(Top 376%)
30K18.64 mi3.11 mi13196+6589513+2999513+29910394(Top 39%)8036(Top 53%)8036(Top 359%)
20M20.00 mi1.36 mi12930+2669382+1319382+13110062(Top 38%)7795(Top 51%)7795(Top 348%)
21M21.00 mi1.00 mi12618+3129234+1489234+1488422(Top 32%)6728(Top 44%)6728(Top 300%)
35K21.75 mi0.75 mi12555+639197+379197+3711273(Top 42%)8255(Top 54%)8255(Top 368%)
23M23.00 mi1.25 mi12344+2119075+1229075+1229213(Top 35%)7081(Top 47%)7081(Top 316%)
24M24.00 mi1.00 mi12204+1408996+798996+798855(Top 33%)6824(Top 45%)6824(Top 305%)
40K24.85 mi0.85 mi12029+1758895+1018895+1018388(Top 32%)6494(Top 43%)6494(Top 290%)
25.2M25.20 mi0.35 mi11937+928852+438852+437515(Top 28%)5915(Top 39%)5915(Top 264%)
Finish26.22 mi1.02 mi11712+2258734+1188734+1187307(Top 27%)5762(Top 38%)5762(Top 257%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

13429

Males

9666

M40-44

9666

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

15659

Males

10579

M40-44

10579

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

13429

Males

9666

M40-44

9666

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

12085

Males

9050

M40-44

9050

20K→Half

12.4 - 13.1 mi

Top 49%
×2stories
+19ft-37ft

Overall

13017

Males

9474

M40-44

9474

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10848

Males

8428

M40-44

8428

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

10394

Males

8036

M40-44

8036

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10062

Males

7795

M40-44

7795

20M→21M

20.0 - 21.0 mi

Top 32%
×8stories
+106ft-24ft

Overall

8422

Males

6728

M40-44

6728

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11273

Males

8255

M40-44

8255

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9213

Males

7081

M40-44

7081

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

8855

Males

6824

M40-44

6824

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8388

Males

6494

M40-44

6494

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7515

Males

5915

M40-44

5915

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7307

Males

5762

M40-44

5762

Passing Analysis

Category:
Athletes Passed
5029
Passed By
242
Net Change
+4787
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16499
5K → 10K558140+418#16499#16081
10K → 15K83614+822#16081#15259
15K → 20K7655+760#15259#14499
20K → Half788+70#14499#14429
Half → 25K5772+575#14429#13854
25K → 30K6657+658#13854#13196
30K → 20M2759+266#13196#12930
20M → 21M3164+312#12930#12618
21M → 35K8219+63#12618#12555
35K → 23M22312+211#12555#12344
23M → 24M1499+140#12344#12204
24M → 40K1794+175#12204#12029
40K → 25.2M920+92#12029#11937
25.2M → Finish2349+225#11937#11712
TOTALS5029242+4787
📊

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