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BOSTON MARATHON 2023

Keith Johnstone

Bib: 2343•M

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0:00
/ mi
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Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 3%
Division (M18-39)
#0 / 5285
Top 7%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:06
Rank: #998
Start → 5K
19:06 | 6:09/mi
10K· 6.21 mi
37:45
Rank: #898 (+100)
5K → 10K
18:39 | 6:00/mi
15K· 9.32 mi
56:21
Rank: #820 (+78)
10K → 15K
18:36 | 5:59/mi
20K· 12.43 mi
1:15:05
Rank: #752 (+68)
15K → 20K
18:44 | 6:02/mi
Half· 13.11 mi
1:19:08
Rank: #740 (+12)
20K → Half
4:03 | 5:56/mi
25K· 15.53 mi
1:33:39
Rank: #702 (+38)
Half → 25K
14:31 | 5:59/mi
30K· 18.64 mi
1:52:37
Rank: #654 (+48)
25K → 30K
18:58 | 6:06/mi
20M
2:00:50
Rank: #621 (+33)
30K → 20M
8:13 | 6:03/mi
21M
2:07:11
Rank: #608 (+13)
20M → 21M
6:21 | 6:21/mi
35K· 21.75 mi
2:11:24
Rank: #579 (+29)
21M → 35K
4:13 | 5:38/mi
23M
2:18:40
Rank: #534 (+45)
35K → 23M
7:16 | 5:48/mi
24M
2:24:24
Rank: #503 (+31)
23M → 24M
5:44 | 5:44/mi
40K· 24.85 mi
2:29:21
Rank: #479 (+24)
24M → 40K
4:57 | 5:47/mi
25.2M
2:31:28
Rank: #472 (+7)
40K → 25.2M
2:07 | 6:08/mi
Finish· 26.22 mi
2:36:56
Rank: #429 (+43)
25.2M → Finish
5:28 | 5:22/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:19:08
Pace6:02 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:17:48
Pace5:56 /mi
📊Negative Split: 1.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:5019:066:0919:06
6:09
-
10K
6.21 mi10:38:2937:456:0518:39
6:00
-0:09
15K
9.32 mi10:57:0556:216:0318:36
5:59
-0:01
20K
12.43 mi11:15:491:15:056:0318:44
6:02
+0:03
Half
13.11 mi11:19:521:19:086:024:03
5:56
-0:06
25K
15.53 mi11:34:231:33:396:0214:31
5:59
+0:03
30K
18.64 mi11:53:211:52:376:0218:58
6:06
+0:07
20M
20.00 mi12:01:342:00:506:028:13
6:03
-0:03
21M
21.00 mi12:07:552:07:116:036:21
6:21
+0:18
35K
21.75 mi12:12:082:11:246:034:13
5:38
-0:43
23M
23.00 mi12:19:242:18:406:027:16
5:48
+0:10
24M
24.00 mi12:25:082:24:246:015:44
5:44
-0:04
40K
24.85 mi12:30:052:29:216:014:57
5:47
+0:03
25.2M
25.20 mi12:32:122:31:286:012:07
6:08
+0:21
Finish
26.22 mi12:37:402:36:565:595:28
5:22
-0:46

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

5:22 /mi

Average Pace

5:59 /mi

Slowest Pace

6:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

27:38

18% of race

Time at Steady Pace

2:02:57

78% of race

Time at Slower Pace

6:21

4% of race

Average Pace: 5:59 /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 mi10:19:5019:066:0919:06
6:09
#998
10K
6.21 mi10:38:2937:456:0518:39
6:00
#898
15K
9.32 mi10:57:0556:216:0318:36
5:59
#820
20K
12.43 mi11:15:491:15:056:0318:44
6:02
#752
Half
13.11 mi11:19:521:19:086:024:03
5:56
#740
25K
15.53 mi11:34:231:33:396:0214:31
5:59
#702
30K
18.64 mi11:53:211:52:376:0218:58
6:06
#654
20M
20.00 mi12:01:342:00:506:028:13
6:03
#621
21M
21.00 mi12:07:552:07:116:036:21
6:21
#608
35K
21.75 mi12:12:082:11:246:034:13
5:38
#579
23M
23.00 mi12:19:242:18:406:027:16
5:48
#534
24M
24.00 mi12:25:082:24:246:015:44
5:44
#503
40K
24.85 mi12:30:052:29:216:014:57
5:47
#479
25.2M
25.20 mi12:32:122:31:286:012:07
6:08
#472
Finish
26.22 mi12:37:402:36:565:595:28
5:22
#429
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi998942942671(Top 3%)628(Top 4%)628(Top 12%)
10K6.21 mi3.10 mi898+100848+94848+94798(Top 3%)752(Top 5%)752(Top 14%)
15K9.32 mi3.11 mi820+78773+75773+75671(Top 3%)628(Top 4%)628(Top 12%)
20K12.43 mi3.11 mi752+68708+65708+65614(Top 2%)574(Top 4%)574(Top 11%)
Half13.11 mi0.68 mi740+12697+11697+11596(Top 2%)558(Top 4%)558(Top 11%)
25K15.53 mi2.42 mi702+38660+37660+37533(Top 2%)496(Top 3%)496(Top 9%)
30K18.64 mi3.11 mi654+48613+47613+47512(Top 2%)479(Top 3%)479(Top 9%)
20M20.00 mi1.36 mi621+33581+32581+32402(Top 2%)370(Top 2%)370(Top 7%)
21M21.00 mi1.00 mi608+13568+13568+13408(Top 2%)376(Top 2%)376(Top 7%)
35K21.75 mi0.75 mi579+29539+29539+29171(Top 0.6%)148(Top 1.0%)148(Top 3%)
23M23.00 mi1.25 mi534+45496+43496+43143(Top 0.5%)123(Top 0.8%)123(Top 2%)
24M24.00 mi1.00 mi503+31466+30466+30195(Top 0.7%)172(Top 1%)172(Top 3%)
40K24.85 mi0.85 mi479+24443+23443+23140(Top 0.5%)126(Top 0.8%)126(Top 2%)
25.2M25.20 mi0.35 mi472+7436+7436+7135(Top 0.5%)120(Top 0.8%)120(Top 2%)
Finish26.22 mi1.02 mi429+43394+42394+4252(Top 0.2%)45(Top 0.3%)45(Top 0.9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

671

Males

628

M18-39

628

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

798

Males

752

M18-39

752

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

671

Males

628

M18-39

628

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

614

Males

574

M18-39

574

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

596

Males

558

M18-39

558

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

533

Males

496

M18-39

496

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

512

Males

479

M18-39

479

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

402

Males

370

M18-39

370

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

408

Males

376

M18-39

376

21M→35K

21.0 - 21.8 mi

Top 0.6%
×7stories
+17ft-86ft

Overall

171

Males

148

M18-39

148

35K→23M

21.8 - 23.0 mi

Top 0.5%
×5stories
+23ft-63ft

Overall

143

Males

123

M18-39

123

23M→24M

23.0 - 24.0 mi

Top 0.7%
×6stories
+12ft-82ft

Overall

195

Males

172

M18-39

172

24M→40K

24.0 - 24.9 mi

Top 0.5%
×1story
+6ft-20ft

Overall

140

Males

126

M18-39

126

40K→25.2M

24.9 - 25.2 mi

Top 0.5%
×1story
+13ft-16ft

Overall

135

Males

120

M18-39

120

25.2M→Finish

25.2 - 26.2 mi

Top 0.2%
×2stories
+22ft-21ft

Overall

52

Males

45

M18-39

45

Passing Analysis

Category:
Athletes Passed
607
Passed By
38
Net Change
+569
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#998
5K → 10K11818+100#998#898
10K → 15K802+78#898#820
15K → 20K691+68#820#752
20K → Half120+12#752#740
Half → 25K424+38#740#702
25K → 30K568+48#702#654
30K → 20M341+33#654#621
20M → 21M163+13#621#608
21M → 35K290+29#608#579
35K → 23M450+45#579#534
23M → 24M310+31#534#503
24M → 40K240+24#503#479
40K → 25.2M81+7#479#472
25.2M → Finish430+43#472#429
TOTALS60738+569
📊

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