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BOSTON MARATHON 2023

David Chaix

Bib: 5210•M

LA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 12%
Gender (Male)
#0 / 15176
Top 20%
Division (M18-39)
#0 / 5285
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:27
Rank: #2751
Start → 5K
20:27 | 6:35/mi
10K· 6.21 mi
41:06
Rank: #3266 (-515)
5K → 10K
20:39 | 6:39/mi
15K· 9.32 mi
1:01:43
Rank: #3351 (-85)
10K → 15K
20:37 | 6:38/mi
20K· 12.43 mi
1:22:23
Rank: #3290 (+61)
15K → 20K
20:40 | 6:39/mi
Half· 13.11 mi
1:26:54
Rank: #3302 (-12)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:43:08
Rank: #3269 (+33)
Half → 25K
16:14 | 6:42/mi
30K· 18.64 mi
2:04:06
Rank: #3089 (+180)
25K → 30K
20:58 | 6:45/mi
20M
2:13:23
Rank: #3061 (+28)
30K → 20M
9:17 | 6:50/mi
21M
2:20:38
Rank: #3071 (-10)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:25:35
Rank: #3054 (+17)
21M → 35K
4:57 | 6:37/mi
23M
2:34:10
Rank: #3021 (+33)
35K → 23M
8:35 | 6:51/mi
24M
2:40:53
Rank: #3000 (+21)
23M → 24M
6:43 | 6:43/mi
40K· 24.85 mi
2:46:49
Rank: #2988 (+12)
24M → 40K
5:56 | 6:56/mi
25.2M
2:49:31
Rank: #3027 (-39)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
2:56:50
Rank: #3148 (-121)
25.2M → Finish
7:19 | 7:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:54
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:29:56
Pace6:52 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0820:276:3520:27
6:35
-
10K
6.21 mi10:43:4741:066:3720:39
6:39
+0:04
15K
9.32 mi11:04:241:01:436:3720:37
6:38
-0:01
20K
12.43 mi11:25:041:22:236:3820:40
6:39
+0:01
Half
13.11 mi11:29:351:26:546:384:31
6:37
-0:02
25K
15.53 mi11:45:491:43:086:3816:14
6:42
+0:05
30K
18.64 mi12:06:472:04:066:3920:58
6:45
+0:03
20M
20.00 mi12:16:042:13:236:409:17
6:50
+0:05
21M
21.00 mi12:23:192:20:386:427:15
7:15
+0:25
35K
21.75 mi12:28:162:25:356:424:57
6:37
-0:38
23M
23.00 mi12:36:512:34:106:428:35
6:51
+0:14
24M
24.00 mi12:43:342:40:536:426:43
6:43
-0:08
40K
24.85 mi12:49:302:46:496:435:56
6:56
+0:13
25.2M
25.20 mi12:52:122:49:316:442:42
7:50
+0:54
Finish
26.22 mi12:59:312:56:506:457:19
7:11
-0:39

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

6:35 /mi

Average Pace

6:45 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:53

94% of race

Time at Steady Pace

7:15

4% of race

Time at Slower Pace

2:42

2% of race

Average Pace: 6:45 /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 mi10:23:0820:276:3520:27
6:35
#2751
10K
6.21 mi10:43:4741:066:3720:39
6:39
#3266
15K
9.32 mi11:04:241:01:436:3720:37
6:38
#3351
20K
12.43 mi11:25:041:22:236:3820:40
6:39
#3290
Half
13.11 mi11:29:351:26:546:384:31
6:37
#3302
25K
15.53 mi11:45:491:43:086:3816:14
6:42
#3269
30K
18.64 mi12:06:472:04:066:3920:58
6:45
#3089
20M
20.00 mi12:16:042:13:236:409:17
6:50
#3061
21M
21.00 mi12:23:192:20:386:427:15
7:15
#3071
35K
21.75 mi12:28:162:25:356:424:57
6:37
#3054
23M
23.00 mi12:36:512:34:106:428:35
6:51
#3021
24M
24.00 mi12:43:342:40:536:426:43
6:43
#3000
40K
24.85 mi12:49:302:46:496:435:56
6:56
#2988
25.2M
25.20 mi12:52:122:49:316:442:42
7:50
#3027
Finish
26.22 mi12:59:312:56:506:457:19
7:11
#3148
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2751261926193572(Top 13%)3376(Top 22%)3376(Top 64%)
10K6.21 mi3.10 mi3266-5153096-4773096-4773852(Top 14%)3629(Top 24%)3629(Top 69%)
15K9.32 mi3.11 mi3351-853179-833179-833572(Top 13%)3376(Top 22%)3376(Top 64%)
20K12.43 mi3.11 mi3290+613128+513128+513196(Top 12%)3037(Top 20%)3037(Top 57%)
Half13.11 mi0.68 mi3302-123140-123140-123552(Top 13%)3360(Top 22%)3360(Top 64%)
25K15.53 mi2.42 mi3269+333113+273113+273320(Top 12%)3152(Top 21%)3152(Top 60%)
30K18.64 mi3.11 mi3089+1802943+1702943+1702688(Top 10%)2552(Top 17%)2552(Top 48%)
20M20.00 mi1.36 mi3061+282915+282915+283014(Top 11%)2834(Top 19%)2834(Top 54%)
21M21.00 mi1.00 mi3071-102917-22917-23346(Top 13%)3116(Top 21%)3116(Top 59%)
35K21.75 mi0.75 mi3054+172900+172900+173078(Top 12%)2880(Top 19%)2880(Top 54%)
23M23.00 mi1.25 mi3021+332871+292871+292958(Top 11%)2759(Top 18%)2759(Top 52%)
24M24.00 mi1.00 mi3000+212849+222849+223191(Top 12%)2957(Top 19%)2957(Top 56%)
40K24.85 mi0.85 mi2988+122834+152834+153516(Top 13%)3195(Top 21%)3195(Top 60%)
25.2M25.20 mi0.35 mi3027-392869-352869-355440(Top 20%)4539(Top 30%)4539(Top 86%)
Finish26.22 mi1.02 mi3148-1212978-1092978-1096241(Top 23%)5080(Top 33%)5080(Top 96%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3572

Males

3376

M18-39

3376

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3852

Males

3629

M18-39

3629

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3572

Males

3376

M18-39

3376

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3196

Males

3037

M18-39

3037

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3552

Males

3360

M18-39

3360

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3320

Males

3152

M18-39

3152

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2688

Males

2552

M18-39

2552

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

3014

Males

2834

M18-39

2834

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3346

Males

3116

M18-39

3116

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3078

Males

2880

M18-39

2880

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

2958

Males

2759

M18-39

2759

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3191

Males

2957

M18-39

2957

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3516

Males

3195

M18-39

3195

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5440

Males

4539

M18-39

4539

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6241

Males

5080

M18-39

5080

Passing Analysis

Category:
Athletes Passed
816
Passed By
1213
Net Change
-397
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2751
5K → 10K27542-515#2751#3266
10K → 15K61146-85#3266#3351
15K → 20K11453+61#3351#3290
20K → Half1830-12#3290#3302
Half → 25K7946+33#3302#3269
25K → 30K19717+180#3269#3089
30K → 20M5527+28#3089#3061
20M → 21M4555-10#3061#3071
21M → 35K3316+17#3071#3054
35K → 23M6734+33#3054#3021
23M → 24M5231+21#3021#3000
24M → 40K4230+12#3000#2988
40K → 25.2M746-39#2988#3027
25.2M → Finish19140-121#3027#3148
TOTALS8161213-397
📊

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