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BOSTON MARATHON 2023

John Shepherd

Bib: 23287•M

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M65-69)
#0 / 549
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:45/mi
27:10
↑ 97↓ 3451.5%
10K· 6.21 mi
9:16/mi
55:56
↑ 79↓ 1380.4%
15K· 9.32 mi
8:51/mi
1:23:25
↑ 67↓ 78
20K· 12.43 mi
9:23/mi
1:52:35
↑ 106↓ 860.1%
Half· 13.11 mi
9:10/mi
1:58:50
↑ 19↓ 370.5%
25K· 15.53 mi
9:27/mi
2:21:45
↑ 66↓ 880.2%
30K· 18.64 mi
9:47/mi
2:52:09
↑ 181↓ 1480.2%
20M
11:30/mi
3:07:46
↑ 64↓ 500.2%
21M
10:28/mi
3:18:14
↑ 106↓ 241.6%
35K· 21.75 mi
9:29/mi
3:25:20
↑ 17↓ 861.7%
23M
10:13/mi
3:38:07
↑ 23↓ 630.6%
24M
9:48/mi
3:47:55
↓ 821.3%
40K· 24.85 mi
10:14/mi
3:56:40
↓ 200.3%
25.2M
11:07/mi
4:00:30
↑ 13↓ 160.2%
Finish· 26.22 mi
9:40/mi
4:10:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:50
Pace9:04 /mi
2nd Half
Distance13.11 mi
Time2:11:31
Pace10:02 /mi
📊Positive Split: 10.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:2427:108:4527:10
8:45
-
10K
6.21 mi11:53:1055:569:0028:46
9:16
+0:31
15K
9.32 mi12:20:391:23:258:5727:29
8:51
-0:25
20K
12.43 mi12:49:491:52:359:0429:10
9:23
+0:32
Half
13.11 mi12:56:041:58:509:046:15
9:10
-0:13
25K
15.53 mi13:18:592:21:459:0722:55
9:27
+0:17
30K
18.64 mi13:49:232:52:099:1430:24
9:47
+0:20
20M
20.00 mi14:05:003:07:469:2315:37
11:30
+1:43
21M
21.00 mi14:15:283:18:149:2610:28
10:28
-1:02
35K
21.75 mi14:22:343:25:209:267:06
9:29
-0:59
23M
23.00 mi14:35:213:38:079:2912:47
10:13
+0:44
24M
24.00 mi14:45:093:47:559:309:48
9:48
-0:25
40K
24.85 mi14:53:543:56:409:318:45
10:14
+0:26
25.2M
25.20 mi14:57:444:00:309:333:50
11:07
+0:53
Finish
26.22 mi15:07:354:10:219:339:51
9:40
-1:27

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

8:45 /mi

Average Pace

9:33 /mi

Slowest Pace

11:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:40

36% of race

Time at Steady Pace

1:49:14

44% of race

Time at Slower Pace

51:27

21% of race

Average Pace: 9:33 /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 mi11:24:2427:108:4527:10
8:45
#19142
10K
6.21 mi11:53:1055:569:0028:46
9:16
#20655
15K
9.32 mi12:20:391:23:258:5727:29
8:51
#20341
20K
12.43 mi12:49:491:52:359:0429:10
9:23
#20616
Half
13.11 mi12:56:041:58:509:046:15
9:10
#20629
25K
15.53 mi13:18:592:21:459:0722:55
9:27
#20665
30K
18.64 mi13:49:232:52:099:1430:24
9:47
#20587
20M
20.00 mi14:05:003:07:469:2315:37
11:30
#20912
21M
21.00 mi14:15:283:18:149:2610:28
10:28
#20827
35K
21.75 mi14:22:343:25:209:267:06
9:29
#20773
23M
23.00 mi14:35:213:38:079:2912:47
10:13
#20748
24M
24.00 mi14:45:093:47:559:309:48
9:48
#20723
40K
24.85 mi14:53:543:56:409:318:45
10:14
#20702
25.2M
25.20 mi14:57:444:00:309:333:50
11:07
#20697
Finish
26.22 mi15:07:354:10:219:339:51
9:40
#20699
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi19142118371183719762(Top 74%)12197(Top 80%)12197(Top 2222%)
10K6.21 mi3.10 mi20655-151312513-67612513-67621801(Top 82%)13063(Top 86%)13063(Top 2379%)
15K9.32 mi3.11 mi20341+31412394+11912394+11919762(Top 74%)12197(Top 80%)12197(Top 2222%)
20K12.43 mi3.11 mi20616-27512533-13912533-13921214(Top 80%)12842(Top 85%)12842(Top 2339%)
Half13.11 mi0.68 mi20629-1312547-1412547-1421016(Top 79%)12736(Top 84%)12736(Top 2320%)
25K15.53 mi2.42 mi20665-3612564-1712564-1720679(Top 78%)12567(Top 83%)12567(Top 2289%)
30K18.64 mi3.11 mi20587+7812511+5312511+5320406(Top 77%)12384(Top 82%)12384(Top 2256%)
20M20.00 mi1.36 mi20912-32512645-13412645-13423501(Top 88%)13688(Top 90%)13688(Top 2493%)
21M21.00 mi1.00 mi20827+8512597+4812597+4819480(Top 73%)11835(Top 78%)11835(Top 2156%)
35K21.75 mi0.75 mi20773+5412561+3612561+3619817(Top 74%)11977(Top 79%)11977(Top 2182%)
23M23.00 mi1.25 mi20748+2512533+2812533+2820596(Top 77%)12285(Top 81%)12285(Top 2238%)
24M24.00 mi1.00 mi20723+2512512+2112512+2120212(Top 76%)12097(Top 80%)12097(Top 2203%)
40K24.85 mi0.85 mi20702+2112493+1912493+1920566(Top 77%)12183(Top 80%)12183(Top 2219%)
25.2M25.20 mi0.35 mi20697+512484+912484+920700(Top 78%)12251(Top 81%)12251(Top 2232%)
Finish26.22 mi1.02 mi20699-212478+612478+620669(Top 78%)12255(Top 81%)12255(Top 2232%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

19762

Males

12197

M65-69

12197

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

21801

Males

13063

M65-69

13063

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

19762

Males

12197

M65-69

12197

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

21214

Males

12842

M65-69

12842

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

21016

Males

12736

M65-69

12736

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

20679

Males

12567

M65-69

12567

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

20406

Males

12384

M65-69

12384

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23501

Males

13688

M65-69

13688

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19480

Males

11835

M65-69

11835

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19817

Males

11977

M65-69

11977

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

20596

Males

12285

M65-69

12285

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

20212

Males

12097

M65-69

12097

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20566

Males

12183

M65-69

12183

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20700

Males

12251

M65-69

12251

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

20669

Males

12255

M65-69

12255

Passing Analysis

Category:
Athletes Passed
1207
Passed By
2764
Net Change
-1557
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19142
5K → 10K301543-1513#19142#20655
10K → 15K36854+314#20655#20341
15K → 20K88363-275#20341#20616
20K → Half2033-13#20616#20629
Half → 25K89125-36#20629#20665
25K → 30K183105+78#20665#20587
30K → 20M12337-325#20587#20912
20M → 21M10823+85#20912#20827
21M → 35K6915+54#20827#20773
35K → 23M7954+25#20773#20748
23M → 24M5631+25#20748#20723
24M → 40K4625+21#20723#20702
40K → 25.2M2116+5#20702#20697
25.2M → Finish3840-2#20697#20699
TOTALS12072764-1557
📊

Passing Visuals

Category:
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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