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BOSTON MARATHON 2023

David Law

Bib: 5111•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 11%
Gender (Male)
#0 / 15176
Top 18%
Division (M18-39)
#0 / 5285
Top 39%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:14
Rank: #2338
Start → 5K
20:14 | 6:31/mi
10K· 6.21 mi
40:28
Rank: #2592 (-254)
5K → 10K
20:14 | 6:31/mi
15K· 9.32 mi
1:00:37
Rank: #2548 (+44)
10K → 15K
20:09 | 6:29/mi
20K· 12.43 mi
1:21:04
Rank: #2589 (-41)
15K → 20K
20:27 | 6:35/mi
Half· 13.11 mi
1:25:32
Rank: #2605 (-16)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:41:34
Rank: #2618 (-13)
Half → 25K
16:02 | 6:37/mi
30K· 18.64 mi
2:02:48
Rank: #2686 (-68)
25K → 30K
21:14 | 6:50/mi
20M
2:12:18
Rank: #2723 (-37)
30K → 20M
9:30 | 6:59/mi
21M
2:19:41
Rank: #2758 (-35)
20M → 21M
7:23 | 7:23/mi
35K· 21.75 mi
2:24:37
Rank: #2749 (+9)
21M → 35K
4:56 | 6:36/mi
23M
2:33:19
Rank: #2767 (-18)
35K → 23M
8:42 | 6:57/mi
24M
2:40:21
Rank: #2857 (-90)
23M → 24M
7:02 | 7:02/mi
40K· 24.85 mi
2:46:26
Rank: #2894 (-37)
24M → 40K
6:05 | 7:07/mi
25.2M
2:49:03
Rank: #2907 (-13)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
2:55:59
Rank: #2923 (-16)
25.2M → Finish
6:56 | 6:48/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:32
Pace6:31 /mi
2nd Half
Distance13.11 mi
Time1:30:27
Pace6:54 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5820:146:3120:14
6:31
-
10K
6.21 mi10:43:1240:286:3120:14
6:31
0:00
15K
9.32 mi11:03:211:00:376:3020:09
6:29
-0:02
20K
12.43 mi11:23:481:21:046:3120:27
6:35
+0:06
Half
13.11 mi11:28:161:25:326:314:28
6:33
-0:02
25K
15.53 mi11:44:181:41:346:3216:02
6:37
+0:04
30K
18.64 mi12:05:322:02:486:3521:14
6:50
+0:13
20M
20.00 mi12:15:022:12:186:379:30
6:59
+0:09
21M
21.00 mi12:22:252:19:416:397:23
7:23
+0:24
35K
21.75 mi12:27:212:24:376:394:56
6:36
-0:47
23M
23.00 mi12:36:032:33:196:408:42
6:57
+0:21
24M
24.00 mi12:43:052:40:216:417:02
7:02
+0:05
40K
24.85 mi12:49:102:46:266:426:05
7:07
+0:05
25.2M
25.20 mi12:51:472:49:036:432:37
7:35
+0:28
Finish
26.22 mi12:58:432:55:596:436:56
6:48
-0:47

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

6:29 /mi

Average Pace

6:43 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:59

94% of race

Time at Steady Pace

10:00

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:43 /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 mi10:22:5820:146:3120:14
6:31
#2338
10K
6.21 mi10:43:1240:286:3120:14
6:31
#2592
15K
9.32 mi11:03:211:00:376:3020:09
6:29
#2548
20K
12.43 mi11:23:481:21:046:3120:27
6:35
#2589
Half
13.11 mi11:28:161:25:326:314:28
6:33
#2605
25K
15.53 mi11:44:181:41:346:3216:02
6:37
#2618
30K
18.64 mi12:05:322:02:486:3521:14
6:50
#2686
20M
20.00 mi12:15:022:12:186:379:30
6:59
#2723
21M
21.00 mi12:22:252:19:416:397:23
7:23
#2758
35K
21.75 mi12:27:212:24:376:394:56
6:36
#2749
23M
23.00 mi12:36:032:33:196:408:42
6:57
#2767
24M
24.00 mi12:43:052:40:216:417:02
7:02
#2857
40K
24.85 mi12:49:102:46:266:426:05
7:07
#2894
25.2M
25.20 mi12:51:472:49:036:432:37
7:35
#2907
Finish
26.22 mi12:58:432:55:596:436:56
6:48
#2923
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2338223022302561(Top 10%)2456(Top 16%)2456(Top 46%)
10K6.21 mi3.10 mi2592-2542472-2422472-2422874(Top 11%)2746(Top 18%)2746(Top 52%)
15K9.32 mi3.11 mi2548+442435+372435+372561(Top 10%)2456(Top 16%)2456(Top 46%)
20K12.43 mi3.11 mi2589-412476-412476-412738(Top 10%)2618(Top 17%)2618(Top 50%)
Half13.11 mi0.68 mi2605-162491-152491-153061(Top 11%)2926(Top 19%)2926(Top 55%)
25K15.53 mi2.42 mi2618-132504-132504-132785(Top 10%)2663(Top 18%)2663(Top 50%)
30K18.64 mi3.11 mi2686-682566-622566-623206(Top 12%)3021(Top 20%)3021(Top 57%)
20M20.00 mi1.36 mi2723-372602-362602-363945(Top 15%)3661(Top 24%)3661(Top 69%)
21M21.00 mi1.00 mi2758-352636-342636-344033(Top 15%)3711(Top 24%)3711(Top 70%)
35K21.75 mi0.75 mi2749+92628+82628+82956(Top 11%)2767(Top 18%)2767(Top 52%)
23M23.00 mi1.25 mi2767-182640-122640-123492(Top 13%)3233(Top 21%)3233(Top 61%)
24M24.00 mi1.00 mi2857-902715-752715-754811(Top 18%)4280(Top 28%)4280(Top 81%)
40K24.85 mi0.85 mi2894-372750-352750-354416(Top 17%)3917(Top 26%)3917(Top 74%)
25.2M25.20 mi0.35 mi2907-132759-92759-94247(Top 16%)3717(Top 24%)3717(Top 70%)
Finish26.22 mi1.02 mi2923-162770-112770-114065(Top 15%)3586(Top 24%)3586(Top 68%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2561

Males

2456

M18-39

2456

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2874

Males

2746

M18-39

2746

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2561

Males

2456

M18-39

2456

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2738

Males

2618

M18-39

2618

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3061

Males

2926

M18-39

2926

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2785

Males

2663

M18-39

2663

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3206

Males

3021

M18-39

3021

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

3945

Males

3661

M18-39

3661

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4033

Males

3711

M18-39

3711

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

2956

Males

2767

M18-39

2767

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3492

Males

3233

M18-39

3233

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4811

Males

4280

M18-39

4280

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4416

Males

3917

M18-39

3917

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4247

Males

3717

M18-39

3717

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4065

Males

3586

M18-39

3586

Passing Analysis

Category:
Athletes Passed
524
Passed By
1109
Net Change
-585
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2338
5K → 10K51305-254#2338#2592
10K → 15K9955+44#2592#2548
15K → 20K4485-41#2548#2589
20K → Half1026-16#2589#2605
Half → 25K4861-13#2605#2618
25K → 30K52120-68#2618#2686
30K → 20M2461-37#2686#2723
20M → 21M3065-35#2723#2758
21M → 35K2819+9#2758#2749
35K → 23M4664-18#2749#2767
23M → 24M14104-90#2767#2857
24M → 40K3067-37#2857#2894
40K → 25.2M1629-13#2894#2907
25.2M → Finish3248-16#2907#2923
TOTALS5241109-585
📊

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