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BOSTON MARATHON 2023

Justin King

Bib: 925•M

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 22%
Gender (Male)
#0 / 15176
Top 35%
Masters (Masters Men)
#0 / 9891
Top 21%
Division (M40-44)
#0 / 2241
Top 47%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:58
Rank: #4133
Start → 5K
20:58 | 6:45/mi
10K· 6.21 mi
41:23
Rank: #3625 (+508)
5K → 10K
20:25 | 6:34/mi
15K· 9.32 mi
1:01:51
Rank: #3452 (+173)
10K → 15K
20:28 | 6:35/mi
20K· 12.43 mi
1:22:29
Rank: #3357 (+95)
15K → 20K
20:38 | 6:38/mi
Half· 13.11 mi
1:26:58
Rank: #3348 (+9)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:43:09
Rank: #3285 (+63)
Half → 25K
16:11 | 6:40/mi
30K· 18.64 mi
2:04:23
Rank: #3223 (+62)
25K → 30K
21:14 | 6:50/mi
20M
2:14:27
Rank: #3479 (-256)
30K → 20M
10:04 | 7:25/mi
21M
2:21:52
Rank: #3504 (-25)
20M → 21M
7:25 | 7:25/mi
35K· 21.75 mi
2:27:20
Rank: #3658 (-154)
21M → 35K
5:28 | 7:18/mi
23M
2:38:23
Rank: #4503 (-845)
35K → 23M
11:03 | 8:50/mi
24M
2:47:15
Rank: #4979 (-476)
23M → 24M
8:52 | 8:52/mi
40K· 24.85 mi
2:54:57
Rank: #5272 (-293)
24M → 40K
7:42 | 9:00/mi
25.2M
2:59:13
Rank: #5627 (-355)
40K → 25.2M
4:16 | 12:22/mi
Finish· 26.22 mi
3:08:03
Rank: #5949 (-322)
25.2M → Finish
8:50 | 8:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:58
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:41:05
Pace7:43 /mi
📊Positive Split: 16.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:1420:586:4520:58
6:45
-
10K
6.21 mi10:41:3941:236:4020:25
6:34
-0:11
15K
9.32 mi11:02:071:01:516:3820:28
6:35
+0:01
20K
12.43 mi11:22:451:22:296:3820:38
6:38
+0:03
Half
13.11 mi11:27:141:26:586:384:29
6:34
-0:04
25K
15.53 mi11:43:251:43:096:3816:11
6:40
+0:06
30K
18.64 mi12:04:392:04:236:4021:14
6:50
+0:10
20M
20.00 mi12:14:432:14:276:4310:04
7:25
+0:35
21M
21.00 mi12:22:082:21:526:457:25
7:25
0:00
35K
21.75 mi12:27:362:27:206:465:28
7:18
-0:07
23M
23.00 mi12:38:392:38:236:5311:03
8:50
+1:32
24M
24.00 mi12:47:312:47:156:588:52
8:52
+0:02
40K
24.85 mi12:55:132:54:577:027:42
9:00
+0:08
25.2M
25.20 mi12:59:292:59:137:074:16
12:22
+3:22
Finish
26.22 mi13:08:193:08:037:118:50
8:40
-3:42

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

6:34 /mi

Average Pace

7:11 /mi

Slowest Pace

12:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:27:20

78% of race

Time at Slower Pace

40:43

22% of race

Average Pace: 7:10 /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 mi10:21:1420:586:4520:58
6:45
#4133
10K
6.21 mi10:41:3941:236:4020:25
6:34
#3625
15K
9.32 mi11:02:071:01:516:3820:28
6:35
#3452
20K
12.43 mi11:22:451:22:296:3820:38
6:38
#3357
Half
13.11 mi11:27:141:26:586:384:29
6:34
#3348
25K
15.53 mi11:43:251:43:096:3816:11
6:40
#3285
30K
18.64 mi12:04:392:04:236:4021:14
6:50
#3223
20M
20.00 mi12:14:432:14:276:4310:04
7:25
#3479
21M
21.00 mi12:22:082:21:526:457:25
7:25
#3504
35K
21.75 mi12:27:362:27:206:465:28
7:18
#3658
23M
23.00 mi12:38:392:38:236:5311:03
8:50
#4503
24M
24.00 mi12:47:312:47:156:588:52
8:52
#4979
40K
24.85 mi12:55:132:54:577:027:42
9:00
#5272
25.2M
25.20 mi12:59:292:59:137:074:16
12:22
#5627
Finish
26.22 mi13:08:193:08:037:118:50
8:40
#5949
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4133387838783209(Top 12%)3055(Top 20%)3055(Top 136%)
10K6.21 mi3.10 mi3625+5083420+4583420+4583303(Top 12%)3145(Top 21%)3145(Top 140%)
15K9.32 mi3.11 mi3452+1733270+1503270+1503209(Top 12%)3055(Top 20%)3055(Top 136%)
20K12.43 mi3.11 mi3357+953187+833187+833125(Top 12%)2972(Top 20%)2972(Top 133%)
Half13.11 mi0.68 mi3348+93182+53182+53288(Top 12%)3138(Top 21%)3138(Top 140%)
25K15.53 mi2.42 mi3285+633128+543128+543202(Top 12%)3054(Top 20%)3054(Top 136%)
30K18.64 mi3.11 mi3223+623067+613067+613237(Top 12%)3052(Top 20%)3052(Top 136%)
20M20.00 mi1.36 mi3479-2563290-2233290-2236265(Top 24%)5481(Top 36%)5481(Top 245%)
21M21.00 mi1.00 mi3504-253319-293319-294159(Top 16%)3811(Top 25%)3811(Top 170%)
35K21.75 mi0.75 mi3658-1543453-1343453-1347125(Top 27%)5965(Top 39%)5965(Top 266%)
23M23.00 mi1.25 mi4503-8454198-7454198-74515101(Top 57%)9838(Top 65%)9838(Top 439%)
24M24.00 mi1.00 mi4979-4764586-3884586-38816534(Top 62%)10406(Top 69%)10406(Top 464%)
40K24.85 mi0.85 mi5272-2934826-2404826-24016120(Top 61%)10164(Top 67%)10164(Top 454%)
25.2M25.20 mi0.35 mi5627-3555108-2825108-28223063(Top 87%)13333(Top 88%)13333(Top 595%)
Finish26.22 mi1.02 mi5949-3225344-2365344-23616295(Top 61%)10275(Top 68%)10275(Top 459%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3209

Males

3055

M40-44

3055

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3303

Males

3145

M40-44

3145

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3209

Males

3055

M40-44

3055

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3125

Males

2972

M40-44

2972

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3288

Males

3138

M40-44

3138

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3202

Males

3054

M40-44

3054

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3237

Males

3052

M40-44

3052

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6265

Males

5481

M40-44

5481

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4159

Males

3811

M40-44

3811

21M→35K

21.0 - 21.8 mi

Top 27%
×7stories
+17ft-86ft

Overall

7125

Males

5965

M40-44

5965

35K→23M

21.8 - 23.0 mi

Top 57%
×5stories
+23ft-63ft

Overall

15101

Males

9838

M40-44

9838

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

16534

Males

10406

M40-44

10406

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16120

Males

10164

M40-44

10164

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

23063

Males

13333

M40-44

13333

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

16295

Males

10275

M40-44

10275

Passing Analysis

Category:
Athletes Passed
1238
Passed By
3054
Net Change
-1816
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4133
5K → 10K55850+508#4133#3625
10K → 15K20229+173#3625#3452
15K → 20K13237+95#3452#3357
20K → Half2112+9#3357#3348
Half → 25K10340+63#3348#3285
25K → 30K12159+62#3285#3223
30K → 20M19275-256#3223#3479
20M → 21M4570-25#3479#3504
21M → 35K10164-154#3504#3658
35K → 23M4849-845#3658#4503
23M → 24M4480-476#4503#4979
24M → 40K7300-293#4979#5272
40K → 25.2M0355-355#5272#5627
25.2M → Finish12334-322#5627#5949
TOTALS12383054-1816
📊

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