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BOSTON MARATHON 2023

Steven Kershaw

Bib: 22607•M

GA

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
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:40
Rank: #18125
Start → 5K
26:40 | 8:35/mi
10K· 6.21 mi
53:19
Rank: #18407 (-282)
5K → 10K
26:39 | 8:35/mi
15K· 9.32 mi
1:20:00
Rank: #18380 (+27)
10K → 15K
26:41 | 8:35/mi
20K· 12.43 mi
1:47:09
Rank: #18338 (+42)
15K → 20K
27:09 | 8:44/mi
Half· 13.11 mi
1:53:06
Rank: #18365 (-27)
20K → Half
5:57 | 8:43/mi
25K· 15.53 mi
2:14:22
Rank: #18264 (+101)
Half → 25K
21:16 | 8:46/mi
30K· 18.64 mi
2:43:11
Rank: #18303 (-39)
25K → 30K
28:49 | 9:17/mi
20M
2:56:08
Rank: #18373 (-70)
30K → 20M
12:57 | 9:32/mi
21M
3:06:32
Rank: #18439 (-66)
20M → 21M
10:24 | 10:24/mi
35K· 21.75 mi
3:14:01
Rank: #18604 (-165)
21M → 35K
7:29 | 10:00/mi
23M
3:26:42
Rank: #18766 (-162)
35K → 23M
12:41 | 10:08/mi
24M
3:36:54
Rank: #18951 (-185)
23M → 24M
10:12 | 10:12/mi
40K· 24.85 mi
3:45:59
Rank: #19104 (-153)
24M → 40K
9:05 | 10:37/mi
25.2M
3:49:52
Rank: #19154 (-50)
40K → 25.2M
3:53 | 11:16/mi
Finish· 26.22 mi
3:59:54
Rank: #19295 (-141)
25.2M → Finish
10:02 | 9:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:06
Pace8:38 /mi
2nd Half
Distance13.11 mi
Time2:06:48
Pace9:40 /mi
📊Positive Split: 12.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3726:408:3526:40
8:35
-
10K
6.21 mi11:47:1653:198:3526:39
8:35
0:00
15K
9.32 mi12:13:571:20:008:3526:41
8:35
0:00
20K
12.43 mi12:41:061:47:098:3727:09
8:44
+0:09
Half
13.11 mi12:47:031:53:068:385:57
8:43
-0:01
25K
15.53 mi13:08:192:14:228:3921:16
8:46
+0:03
30K
18.64 mi13:37:082:43:118:4528:49
9:17
+0:31
20M
20.00 mi13:50:052:56:088:4812:57
9:32
+0:15
21M
21.00 mi14:00:293:06:328:5310:24
10:24
+0:52
35K
21.75 mi14:07:583:14:018:557:29
10:00
-0:24
23M
23.00 mi14:20:393:26:428:5912:41
10:08
+0:08
24M
24.00 mi14:30:513:36:549:0210:12
10:12
+0:04
40K
24.85 mi14:39:563:45:599:069:05
10:37
+0:25
25.2M
25.20 mi14:43:493:49:529:073:53
11:16
+0:39
Finish
26.22 mi14:53:513:59:549:0910:02
9:51
-1:25

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

8:35 /mi

Average Pace

9:09 /mi

Slowest Pace

11:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:22

56% of race

Time at Steady Pace

51:48

22% of race

Time at Slower Pace

53:44

22% of race

Average Pace: 9:09 /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 mi11:20:3726:408:3526:40
8:35
#18125
10K
6.21 mi11:47:1653:198:3526:39
8:35
#18407
15K
9.32 mi12:13:571:20:008:3526:41
8:35
#18380
20K
12.43 mi12:41:061:47:098:3727:09
8:44
#18338
Half
13.11 mi12:47:031:53:068:385:57
8:43
#18365
25K
15.53 mi13:08:192:14:228:3921:16
8:46
#18264
30K
18.64 mi13:37:082:43:118:4528:49
9:17
#18303
20M
20.00 mi13:50:052:56:088:4812:57
9:32
#18373
21M
21.00 mi14:00:293:06:328:5310:24
10:24
#18439
35K
21.75 mi14:07:583:14:018:557:29
10:00
#18604
23M
23.00 mi14:20:393:26:428:5912:41
10:08
#18766
24M
24.00 mi14:30:513:36:549:0210:12
10:12
#18951
40K
24.85 mi14:39:563:45:599:069:05
10:37
#19104
25.2M
25.20 mi14:43:493:49:529:073:53
11:16
#19154
Finish
26.22 mi14:53:513:59:549:0910:02
9:51
#19295
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi18125114691146918358(Top 69%)11630(Top 77%)11630(Top 1048%)
10K6.21 mi3.10 mi18407-28211620-15111620-15118708(Top 70%)11784(Top 78%)11784(Top 1062%)
15K9.32 mi3.11 mi18380+2711623-311623-318358(Top 69%)11630(Top 77%)11630(Top 1048%)
20K12.43 mi3.11 mi18338+4211603+2011603+2018345(Top 69%)11622(Top 77%)11622(Top 1047%)
Half13.11 mi0.68 mi18365-2711621-1811621-1819033(Top 71%)11909(Top 78%)11909(Top 1073%)
25K15.53 mi2.42 mi18264+10111556+6511556+6517784(Top 67%)11317(Top 75%)11317(Top 1020%)
30K18.64 mi3.11 mi18303-3911541+1511541+1518504(Top 70%)11564(Top 76%)11564(Top 1042%)
20M20.00 mi1.36 mi18373-7011556-1511556-1518962(Top 71%)11664(Top 77%)11664(Top 1051%)
21M21.00 mi1.00 mi18439-6611569-1311569-1319257(Top 72%)11740(Top 77%)11740(Top 1058%)
35K21.75 mi0.75 mi18604-16511649-8011649-8021256(Top 80%)12599(Top 83%)12599(Top 1135%)
23M23.00 mi1.25 mi18766-16211694-4511694-4520363(Top 76%)12182(Top 80%)12182(Top 1097%)
24M24.00 mi1.00 mi18951-18511760-6611760-6621317(Top 80%)12557(Top 83%)12557(Top 1131%)
40K24.85 mi0.85 mi19104-15311823-6311823-6321500(Top 81%)12579(Top 83%)12579(Top 1133%)
25.2M25.20 mi0.35 mi19154-5011844-2111844-2121017(Top 79%)12390(Top 82%)12390(Top 1116%)
Finish26.22 mi1.02 mi19295-14111895-5111895-5121291(Top 80%)12557(Top 83%)12557(Top 1131%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

18358

Males

11630

M60-64

11630

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

18708

Males

11784

M60-64

11784

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

18358

Males

11630

M60-64

11630

15K→20K

9.3 - 12.4 mi

Top 69%
×5stories
+106ft-86ft

Overall

18345

Males

11622

M60-64

11622

20K→Half

12.4 - 13.1 mi

Top 71%
×2stories
+19ft-37ft

Overall

19033

Males

11909

M60-64

11909

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

17784

Males

11317

M60-64

11317

25K→30K

15.5 - 18.6 mi

Top 70%
×9stories
+181ft-148ft

Overall

18504

Males

11564

M60-64

11564

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

18962

Males

11664

M60-64

11664

20M→21M

20.0 - 21.0 mi

Top 72%
×8stories
+106ft-24ft

Overall

19257

Males

11740

M60-64

11740

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

21256

Males

12599

M60-64

12599

35K→23M

21.8 - 23.0 mi

Top 76%
×5stories
+23ft-63ft

Overall

20363

Males

12182

M60-64

12182

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

21317

Males

12557

M60-64

12557

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21500

Males

12579

M60-64

12579

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

21017

Males

12390

M60-64

12390

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2stories
+22ft-21ft

Overall

21291

Males

12557

M60-64

12557

Passing Analysis

Category:
Athletes Passed
1172
Passed By
2342
Net Change
-1170
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18125
5K → 10K188470-282#18125#18407
10K → 15K199172+27#18407#18380
15K → 20K178136+42#18380#18338
20K → Half2148-27#18338#18365
Half → 25K17170+101#18365#18264
25K → 30K162201-39#18264#18303
30K → 20M76146-70#18303#18373
20M → 21M60126-66#18373#18439
21M → 35K11176-165#18439#18604
35K → 23M40202-162#18604#18766
23M → 24M19204-185#18766#18951
24M → 40K18171-153#18951#19104
40K → 25.2M1262-50#19104#19154
25.2M → Finish17158-141#19154#19295
TOTALS11722342-1170
📊

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