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BOSTON MARATHON 2023

Robert Cox

Bib: 20574•M

MB

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:11
Rank: #17060
Start → 5K
26:11 | 8:26/mi
10K· 6.21 mi
52:10
Rank: #17177 (-117)
5K → 10K
25:59 | 8:22/mi
15K· 9.32 mi
1:18:43
Rank: #17490 (-313)
10K → 15K
26:33 | 8:33/mi
20K· 12.43 mi
1:45:08
Rank: #17311 (+179)
15K → 20K
26:25 | 8:30/mi
Half· 13.11 mi
1:50:50
Rank: #17281 (+30)
20K → Half
5:42 | 8:21/mi
25K· 15.53 mi
2:11:53
Rank: #17261 (+20)
Half → 25K
21:03 | 8:41/mi
30K· 18.64 mi
2:38:45
Rank: #16862 (+399)
25K → 30K
26:52 | 8:39/mi
20M
2:50:25
Rank: #16666 (+196)
30K → 20M
11:40 | 8:35/mi
21M
2:59:30
Rank: #16470 (+196)
20M → 21M
9:05 | 9:05/mi
35K· 21.75 mi
3:05:46
Rank: #16397 (+73)
21M → 35K
6:16 | 8:23/mi
23M
3:16:30
Rank: #16222 (+175)
35K → 23M
10:44 | 8:34/mi
24M
3:24:41
Rank: #16052 (+170)
23M → 24M
8:11 | 8:11/mi
40K· 24.85 mi
3:31:55
Rank: #15933 (+119)
24M → 40K
7:14 | 8:28/mi
25.2M
3:35:01
Rank: #15863 (+70)
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:43:19
Rank: #15759 (+104)
25.2M → Finish
8:18 | 8:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:50
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time1:52:29
Pace8:35 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:2926:118:2626:11
8:26
-
10K
6.21 mi11:44:2852:108:2425:59
8:22
-0:04
15K
9.32 mi12:11:011:18:438:2726:33
8:33
+0:11
20K
12.43 mi12:37:261:45:088:2826:25
8:30
-0:03
Half
13.11 mi12:43:081:50:508:275:42
8:21
-0:09
25K
15.53 mi13:04:112:11:538:2921:03
8:41
+0:20
30K
18.64 mi13:31:032:38:458:3126:52
8:39
-0:02
20M
20.00 mi13:42:432:50:258:3111:40
8:35
-0:04
21M
21.00 mi13:51:482:59:308:339:05
9:05
+0:30
35K
21.75 mi13:58:043:05:468:336:16
8:23
-0:42
23M
23.00 mi14:08:483:16:308:3310:44
8:34
+0:11
24M
24.00 mi14:16:593:24:418:328:11
8:11
-0:23
40K
24.85 mi14:24:133:31:558:327:14
8:28
+0:17
25.2M
25.20 mi14:27:193:35:018:323:06
8:59
+0:31
Finish
26.22 mi14:35:373:43:198:318:18
8:09
-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

8:09 /mi

Average Pace

8:31 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:31:08

95% of race

Time at Steady Pace

12:11

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:31 /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 mi11:18:2926:118:2626:11
8:26
#17060
10K
6.21 mi11:44:2852:108:2425:59
8:22
#17177
15K
9.32 mi12:11:011:18:438:2726:33
8:33
#17490
20K
12.43 mi12:37:261:45:088:2826:25
8:30
#17311
Half
13.11 mi12:43:081:50:508:275:42
8:21
#17281
25K
15.53 mi13:04:112:11:538:2921:03
8:41
#17261
30K
18.64 mi13:31:032:38:458:3126:52
8:39
#16862
20M
20.00 mi13:42:432:50:258:3111:40
8:35
#16666
21M
21.00 mi13:51:482:59:308:339:05
9:05
#16470
35K
21.75 mi13:58:043:05:468:336:16
8:23
#16397
23M
23.00 mi14:08:483:16:308:3310:44
8:34
#16222
24M
24.00 mi14:16:593:24:418:328:11
8:11
#16052
40K
24.85 mi14:24:133:31:558:327:14
8:28
#15933
25.2M
25.20 mi14:27:193:35:018:323:06
8:59
#15863
Finish
26.22 mi14:35:373:43:198:318:18
8:09
#15759
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17060110701107018093(Top 68%)11512(Top 76%)11512(Top 1037%)
10K6.21 mi3.10 mi17177-11711119-4911119-4917320(Top 65%)11224(Top 74%)11224(Top 1011%)
15K9.32 mi3.11 mi17490-31311260-14111260-14118093(Top 68%)11512(Top 76%)11512(Top 1037%)
20K12.43 mi3.11 mi17311+17911176+8411176+8416858(Top 63%)10983(Top 72%)10983(Top 989%)
Half13.11 mi0.68 mi17281+3011165+1111165+1116777(Top 63%)10978(Top 72%)10978(Top 989%)
25K15.53 mi2.42 mi17261+2011147+1811147+1817266(Top 65%)11091(Top 73%)11091(Top 999%)
30K18.64 mi3.11 mi16862+39910965+18210965+18215202(Top 57%)10126(Top 67%)10126(Top 912%)
20M20.00 mi1.36 mi16666+19610854+11110854+11114151(Top 53%)9633(Top 63%)9633(Top 868%)
21M21.00 mi1.00 mi16470+19610758+9610758+9613876(Top 52%)9439(Top 62%)9439(Top 850%)
35K21.75 mi0.75 mi16397+7310721+3710721+3714558(Top 55%)9676(Top 64%)9676(Top 872%)
23M23.00 mi1.25 mi16222+17510631+9010631+9013652(Top 51%)9212(Top 61%)9212(Top 830%)
24M24.00 mi1.00 mi16052+17010533+9810533+9812481(Top 47%)8627(Top 57%)8627(Top 777%)
40K24.85 mi0.85 mi15933+11910470+6310470+6313072(Top 49%)8821(Top 58%)8821(Top 795%)
25.2M25.20 mi0.35 mi15863+7010438+3210438+3212441(Top 47%)8504(Top 56%)8504(Top 766%)
Finish26.22 mi1.02 mi15759+10410391+4710391+4713060(Top 49%)8805(Top 58%)8805(Top 793%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

18093

Males

11512

M60-64

11512

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

17320

Males

11224

M60-64

11224

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

18093

Males

11512

M60-64

11512

15K→20K

9.3 - 12.4 mi

Top 63%
×5stories
+106ft-86ft

Overall

16858

Males

10983

M60-64

10983

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

16777

Males

10978

M60-64

10978

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

17266

Males

11091

M60-64

11091

25K→30K

15.5 - 18.6 mi

Top 57%
×9stories
+181ft-148ft

Overall

15202

Males

10126

M60-64

10126

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

14151

Males

9633

M60-64

9633

20M→21M

20.0 - 21.0 mi

Top 52%
×8stories
+106ft-24ft

Overall

13876

Males

9439

M60-64

9439

21M→35K

21.0 - 21.8 mi

Top 55%
×7stories
+17ft-86ft

Overall

14558

Males

9676

M60-64

9676

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

13652

Males

9212

M60-64

9212

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

12481

Males

8627

M60-64

8627

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13072

Males

8821

M60-64

8821

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12441

Males

8504

M60-64

8504

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

13060

Males

8805

M60-64

8805

Passing Analysis

Category:
Athletes Passed
2385
Passed By
1084
Net Change
+1301
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17060
5K → 10K261378-117#17060#17177
10K → 15K89402-313#17177#17490
15K → 20K25879+179#17490#17311
20K → Half4616+30#17311#17281
Half → 25K131111+20#17281#17261
25K → 30K41617+399#17261#16862
30K → 20M2059+196#16862#16666
20M → 21M20610+196#16666#16470
21M → 35K8714+73#16470#16397
35K → 23M19217+175#16397#16222
23M → 24M1733+170#16222#16052
24M → 40K13011+119#16052#15933
40K → 25.2M722+70#15933#15863
25.2M → Finish11915+104#15863#15759
TOTALS23851084+1301
📊

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