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BOSTON MARATHON 2023

David Keiter

Bib: 12570•M

KS

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 49%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
Top 41%
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
8:11/mi
25:24
↑ 97↓ 3451.5%
10K· 6.21 mi
7:56/mi
50:03
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:14:39
↑ 67↓ 78
20K· 12.43 mi
7:57/mi
1:39:21
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:44:36
↑ 19↓ 370.5%
25K· 15.53 mi
7:54/mi
2:03:46
↑ 66↓ 880.2%
30K· 18.64 mi
8:26/mi
2:29:58
↑ 181↓ 1480.2%
20M
8:31/mi
2:41:33
↑ 64↓ 500.2%
21M
8:53/mi
2:50:26
↑ 106↓ 241.6%
35K· 21.75 mi
8:16/mi
2:56:37
↑ 17↓ 861.7%
23M
8:11/mi
3:06:52
↑ 23↓ 630.6%
24M
8:04/mi
3:14:56
↓ 821.3%
40K· 24.85 mi
8:03/mi
3:21:49
↓ 200.3%
25.2M
8:25/mi
3:24:43
↑ 13↓ 160.2%
Finish· 26.22 mi
7:38/mi
3:32:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:36
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:47:54
Pace8:14 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0825:248:1125:24
8:11
-
10K
6.21 mi11:43:4750:038:0324:39
7:56
-0:15
15K
9.32 mi12:08:231:14:398:0124:36
7:55
-0:01
20K
12.43 mi12:33:051:39:218:0024:42
7:57
+0:02
Half
13.11 mi12:38:201:44:367:595:15
7:42
-0:15
25K
15.53 mi12:57:302:03:467:5819:10
7:54
+0:12
30K
18.64 mi13:23:422:29:588:0326:12
8:26
+0:32
20M
20.00 mi13:35:172:41:338:0511:35
8:31
+0:05
21M
21.00 mi13:44:102:50:268:078:53
8:53
+0:22
35K
21.75 mi13:50:212:56:378:076:11
8:16
-0:37
23M
23.00 mi14:00:363:06:528:0710:15
8:11
-0:05
24M
24.00 mi14:08:403:14:568:078:04
8:04
-0:07
40K
24.85 mi14:15:333:21:498:076:53
8:03
-0:01
25.2M
25.20 mi14:18:273:24:438:072:54
8:25
+0:22
Finish
26.22 mi14:26:143:32:308:077:47
7:38
-0:47

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

7:38 /mi

Average Pace

8:07 /mi

Slowest Pace

8:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:56

77% of race

Time at Steady Pace

49:34

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:06 /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 mi11:19:0825:248:1125:24
8:11
#15254
10K
6.21 mi11:43:4750:038:0324:39
7:56
#14768
15K
9.32 mi12:08:231:14:398:0124:36
7:55
#14422
20K
12.43 mi12:33:051:39:218:0024:42
7:57
#14052
Half
13.11 mi12:38:201:44:367:595:15
7:42
#13933
25K
15.53 mi12:57:302:03:467:5819:10
7:54
#13622
30K
18.64 mi13:23:422:29:588:0326:12
8:26
#13631
20M
20.00 mi13:35:172:41:338:0511:35
8:31
#13650
21M
21.00 mi13:44:102:50:268:078:53
8:53
#13570
35K
21.75 mi13:50:212:56:378:076:11
8:16
#13578
23M
23.00 mi14:00:363:06:528:0710:15
8:11
#13382
24M
24.00 mi14:08:403:14:568:078:04
8:04
#13285
40K
24.85 mi14:15:333:21:498:076:53
8:03
#13155
25.2M
25.20 mi14:18:273:24:438:072:54
8:25
#13068
Finish
26.22 mi14:26:143:32:308:077:47
7:38
#12932
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi15254104271042713704(Top 51%)9784(Top 64%)9784(Top 688%)
10K6.21 mi3.10 mi14768+48610241+18610241+18614259(Top 54%)10026(Top 66%)10026(Top 705%)
15K9.32 mi3.11 mi14422+34610091+15010091+15013704(Top 51%)9784(Top 64%)9784(Top 688%)
20K12.43 mi3.11 mi14052+3709917+1749917+17413022(Top 49%)9445(Top 62%)9445(Top 664%)
Half13.11 mi0.68 mi13933+1199871+469871+4611818(Top 44%)9003(Top 59%)9003(Top 633%)
25K15.53 mi2.42 mi13622+3119725+1469725+14611950(Top 45%)8889(Top 59%)8889(Top 625%)
30K18.64 mi3.11 mi13631-99698+279698+2713876(Top 52%)9601(Top 63%)9601(Top 675%)
20M20.00 mi1.36 mi13650-199688+109688+1013752(Top 52%)9459(Top 62%)9459(Top 665%)
21M21.00 mi1.00 mi13570+809635+539635+5312739(Top 48%)8914(Top 59%)8914(Top 627%)
35K21.75 mi0.75 mi13578-89627+89627+813856(Top 52%)9345(Top 62%)9345(Top 657%)
23M23.00 mi1.25 mi13382+1969522+1059522+10511093(Top 42%)8024(Top 53%)8024(Top 564%)
24M24.00 mi1.00 mi13285+979460+629460+6211673(Top 44%)8241(Top 54%)8241(Top 580%)
40K24.85 mi0.85 mi13155+1309380+809380+8010370(Top 39%)7537(Top 50%)7537(Top 530%)
25.2M25.20 mi0.35 mi13068+879328+529328+528973(Top 34%)6746(Top 44%)6746(Top 474%)
Finish26.22 mi1.02 mi12932+1369253+759253+759547(Top 36%)7053(Top 46%)7053(Top 496%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13704

Males

9784

M55-59

9784

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

14259

Males

10026

M55-59

10026

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13704

Males

9784

M55-59

9784

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

13022

Males

9445

M55-59

9445

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

11818

Males

9003

M55-59

9003

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

11950

Males

8889

M55-59

8889

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

13876

Males

9601

M55-59

9601

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13752

Males

9459

M55-59

9459

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

12739

Males

8914

M55-59

8914

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

13856

Males

9345

M55-59

9345

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

11093

Males

8024

M55-59

8024

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

11673

Males

8241

M55-59

8241

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10370

Males

7537

M55-59

7537

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

8973

Males

6746

M55-59

6746

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9547

Males

7053

M55-59

7053

Passing Analysis

Category:
Athletes Passed
3032
Passed By
710
Net Change
+2322
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15254
5K → 10K597111+486#15254#14768
10K → 15K40256+346#14768#14422
15K → 20K41141+370#14422#14052
20K → Half1223+119#14052#13933
Half → 25K32716+311#13933#13622
25K → 30K190199-9#13622#13631
30K → 20M95114-19#13631#13650
20M → 21M12747+80#13650#13570
21M → 35K5866-8#13570#13578
35K → 23M21115+196#13578#13382
23M → 24M12124+97#13382#13285
24M → 40K1388+130#13285#13155
40K → 25.2M892+87#13155#13068
25.2M → Finish1448+136#13068#12932
TOTALS3032710+2322
📊

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