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BOSTON MARATHON 2023

David Lock

Bib: 27441•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 21%
Division (M18-39)
#0 / 5285
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:07
Rank: #2149
Start → 5K
20:07 | 6:28/mi
10K· 6.21 mi
40:47
Rank: #2884 (-735)
5K → 10K
20:40 | 6:39/mi
15K· 9.32 mi
1:01:44
Rank: #3375 (-491)
10K → 15K
20:57 | 6:45/mi
20K· 12.43 mi
1:22:33
Rank: #3399 (-24)
15K → 20K
20:49 | 6:42/mi
Half· 13.11 mi
1:27:04
Rank: #3406 (-7)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:43:02
Rank: #3230 (+176)
Half → 25K
15:58 | 6:35/mi
30K· 18.64 mi
2:03:34
Rank: #2904 (+326)
25K → 30K
20:32 | 6:37/mi
20M
2:12:42
Rank: #2849 (+55)
30K → 20M
9:08 | 6:43/mi
21M
2:19:57
Rank: #2844 (+5)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:24:53
Rank: #2833 (+11)
21M → 35K
4:56 | 6:36/mi
23M
2:33:47
Rank: #2893 (-60)
35K → 23M
8:54 | 7:06/mi
24M
2:41:00
Rank: #3033 (-140)
23M → 24M
7:13 | 7:13/mi
40K· 24.85 mi
2:47:23
Rank: #3156 (-123)
24M → 40K
6:23 | 7:28/mi
25.2M
2:50:10
Rank: #3217 (-61)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
2:57:37
Rank: #3365 (-148)
25.2M → Finish
7:27 | 7:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:04
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:30:33
Pace6:54 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:36:5220:076:2820:07
6:28
-
10K
6.21 mi11:57:3240:476:3420:40
6:39
+0:11
15K
9.32 mi12:18:291:01:446:3720:57
6:45
+0:06
20K
12.43 mi12:39:181:22:336:3920:49
6:42
-0:03
Half
13.11 mi12:43:491:27:046:384:31
6:37
-0:05
25K
15.53 mi12:59:471:43:026:3815:58
6:35
-0:02
30K
18.64 mi13:20:192:03:346:3820:32
6:37
+0:02
20M
20.00 mi13:29:272:12:426:389:08
6:43
+0:06
21M
21.00 mi13:36:422:19:576:407:15
7:15
+0:32
35K
21.75 mi13:41:382:24:536:404:56
6:36
-0:39
23M
23.00 mi13:50:322:33:476:418:54
7:06
+0:30
24M
24.00 mi13:57:452:41:006:437:13
7:13
+0:07
40K
24.85 mi14:04:082:47:236:446:23
7:28
+0:15
25.2M
25.20 mi14:06:552:50:106:452:47
8:04
+0:36
Finish
26.22 mi14:14:222:57:376:477:27
7:19
-0:45

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

6:28 /mi

Average Pace

6:47 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

20:07

11% of race

Time at Steady Pace

1:57:31

66% of race

Time at Slower Pace

39:59

23% of race

Average Pace: 6:46 /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 mi11:36:5220:076:2820:07
6:28
#2149
10K
6.21 mi11:57:3240:476:3420:40
6:39
#2884
15K
9.32 mi12:18:291:01:446:3720:57
6:45
#3375
20K
12.43 mi12:39:181:22:336:3920:49
6:42
#3399
Half
13.11 mi12:43:491:27:046:384:31
6:37
#3406
25K
15.53 mi12:59:471:43:026:3815:58
6:35
#3230
30K
18.64 mi13:20:192:03:346:3820:32
6:37
#2904
20M
20.00 mi13:29:272:12:426:389:08
6:43
#2849
21M
21.00 mi13:36:422:19:576:407:15
7:15
#2844
35K
21.75 mi13:41:382:24:536:404:56
6:36
#2833
23M
23.00 mi13:50:322:33:476:418:54
7:06
#2893
24M
24.00 mi13:57:452:41:006:437:13
7:13
#3033
40K
24.85 mi14:04:082:47:236:446:23
7:28
#3156
25.2M
25.20 mi14:06:552:50:106:452:47
8:04
#3217
Finish
26.22 mi14:14:222:57:376:477:27
7:19
#3365
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2149204920494525(Top 17%)4224(Top 28%)4224(Top 80%)
10K6.21 mi3.10 mi2884-7352750-7012750-7013895(Top 15%)3668(Top 24%)3668(Top 69%)
15K9.32 mi3.11 mi3375-4913199-4493199-4494525(Top 17%)4224(Top 28%)4224(Top 80%)
20K12.43 mi3.11 mi3399-243225-263225-263578(Top 13%)3385(Top 22%)3385(Top 64%)
Half13.11 mi0.68 mi3406-73233-83233-83573(Top 13%)3381(Top 22%)3381(Top 64%)
25K15.53 mi2.42 mi3230+1763078+1553078+1552632(Top 10%)2520(Top 17%)2520(Top 48%)
30K18.64 mi3.11 mi2904+3262778+3002778+3002004(Top 8%)1917(Top 13%)1917(Top 36%)
20M20.00 mi1.36 mi2849+552723+552723+552398(Top 9%)2274(Top 15%)2274(Top 43%)
21M21.00 mi1.00 mi2844+52718+52718+53351(Top 13%)3121(Top 21%)3121(Top 59%)
35K21.75 mi0.75 mi2833+112708+102708+102979(Top 11%)2790(Top 18%)2790(Top 53%)
23M23.00 mi1.25 mi2893-602753-452753-454319(Top 16%)3938(Top 26%)3938(Top 75%)
24M24.00 mi1.00 mi3033-1402879-1262879-1265798(Top 22%)4964(Top 33%)4964(Top 94%)
40K24.85 mi0.85 mi3156-1232990-1112990-1116441(Top 24%)5287(Top 35%)5287(Top 100%)
25.2M25.20 mi0.35 mi3217-613043-533043-536797(Top 26%)5429(Top 36%)5429(Top 103%)
Finish26.22 mi1.02 mi3365-1483177-1343177-1347158(Top 27%)5649(Top 37%)5649(Top 107%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4525

Males

4224

M18-39

4224

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

3895

Males

3668

M18-39

3668

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4525

Males

4224

M18-39

4224

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3578

Males

3385

M18-39

3385

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3573

Males

3381

M18-39

3381

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2632

Males

2520

M18-39

2520

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2004

Males

1917

M18-39

1917

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2398

Males

2274

M18-39

2274

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3351

Males

3121

M18-39

3121

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

2979

Males

2790

M18-39

2790

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4319

Males

3938

M18-39

3938

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5798

Males

4964

M18-39

4964

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6441

Males

5287

M18-39

5287

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

6797

Males

5429

M18-39

5429

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7158

Males

5649

M18-39

5649

Passing Analysis

Category:
Athletes Passed
835
Passed By
2051
Net Change
-1216
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2149
5K → 10K5740-735#2149#2884
10K → 15K8499-491#2884#3375
15K → 20K7397-24#3375#3399
20K → Half1421-7#3399#3406
Half → 25K1826+176#3406#3230
25K → 30K3271+326#3230#2904
30K → 20M638+55#2904#2849
20M → 21M4338+5#2849#2844
21M → 35K3221+11#2844#2833
35K → 23M41101-60#2833#2893
23M → 24M10150-140#2893#3033
24M → 40K12135-123#3033#3156
40K → 25.2M970-61#3156#3217
25.2M → Finish16164-148#3217#3365
TOTALS8352051-1216
📊

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