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BOSTON MARATHON 2023

David Naylor

Bib: 4556•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 23%
Masters (Masters Men)
#0 / 9891
Top 10%
Division (M50-54)
#0 / 2052
Top 6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:30
Rank: #5710
Start → 5K
21:30 | 6:55/mi
10K· 6.21 mi
42:26
Rank: #5199 (+511)
5K → 10K
20:56 | 6:44/mi
15K· 9.32 mi
1:03:07
Rank: #4718 (+481)
10K → 15K
20:41 | 6:39/mi
20K· 12.43 mi
1:23:57
Rank: #4397 (+321)
15K → 20K
20:50 | 6:42/mi
Half· 13.11 mi
1:28:30
Rank: #4373 (+24)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:44:51
Rank: #4208 (+165)
Half → 25K
16:21 | 6:45/mi
30K· 18.64 mi
2:06:24
Rank: #4119 (+89)
25K → 30K
21:33 | 6:56/mi
20M
2:15:52
Rank: #4080 (+39)
30K → 20M
9:28 | 6:58/mi
21M
2:23:26
Rank: #4143 (-63)
20M → 21M
7:34 | 7:34/mi
35K· 21.75 mi
2:28:28
Rank: #4113 (+30)
21M → 35K
5:02 | 6:44/mi
23M
2:37:01
Rank: #3985 (+128)
35K → 23M
8:33 | 6:50/mi
24M
2:43:35
Rank: #3873 (+112)
23M → 24M
6:34 | 6:34/mi
40K· 24.85 mi
2:49:21
Rank: #3779 (+94)
24M → 40K
5:46 | 6:45/mi
25.2M
2:51:54
Rank: #3768 (+11)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:58:39
Rank: #3720 (+48)
25.2M → Finish
6:45 | 6:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:30
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:30:09
Pace6:53 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3621:306:5521:30
6:55
-
10K
6.21 mi10:44:3242:266:5020:56
6:44
-0:11
15K
9.32 mi11:05:131:03:076:4620:41
6:39
-0:05
20K
12.43 mi11:26:031:23:576:4520:50
6:42
+0:03
Half
13.11 mi11:30:361:28:306:454:33
6:40
-0:02
25K
15.53 mi11:46:571:44:516:4516:21
6:45
+0:05
30K
18.64 mi12:08:302:06:246:4721:33
6:56
+0:11
20M
20.00 mi12:17:582:15:526:489:28
6:58
+0:02
21M
21.00 mi12:25:322:23:266:507:34
7:34
+0:36
35K
21.75 mi12:30:342:28:286:505:02
6:44
-0:50
23M
23.00 mi12:39:072:37:016:508:33
6:50
+0:06
24M
24.00 mi12:45:412:43:356:496:34
6:34
-0:16
40K
24.85 mi12:51:272:49:216:495:46
6:45
+0:11
25.2M
25.20 mi12:54:002:51:546:492:33
7:24
+0:39
Finish
26.22 mi13:00:452:58:396:496:45
6:37
-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

6:34 /mi

Average Pace

6:49 /mi

Slowest Pace

7:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:32

94% of race

Time at Steady Pace

10:07

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:23:3621:306:5521:30
6:55
#5710
10K
6.21 mi10:44:3242:266:5020:56
6:44
#5199
15K
9.32 mi11:05:131:03:076:4620:41
6:39
#4718
20K
12.43 mi11:26:031:23:576:4520:50
6:42
#4397
Half
13.11 mi11:30:361:28:306:454:33
6:40
#4373
25K
15.53 mi11:46:571:44:516:4516:21
6:45
#4208
30K
18.64 mi12:08:302:06:246:4721:33
6:56
#4119
20M
20.00 mi12:17:582:15:526:489:28
6:58
#4080
21M
21.00 mi12:25:322:23:266:507:34
7:34
#4143
35K
21.75 mi12:30:342:28:286:505:02
6:44
#4113
23M
23.00 mi12:39:072:37:016:508:33
6:50
#3985
24M
24.00 mi12:45:412:43:356:496:34
6:34
#3873
40K
24.85 mi12:51:272:49:216:495:46
6:45
#3779
25.2M
25.20 mi12:54:002:51:546:492:33
7:24
#3768
Finish
26.22 mi13:00:452:58:396:496:45
6:37
#3720
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5710524652463742(Top 14%)3526(Top 23%)3526(Top 172%)
10K6.21 mi3.10 mi5199+5114814+4324814+4324697(Top 18%)4370(Top 29%)4370(Top 213%)
15K9.32 mi3.11 mi4718+4814393+4214393+4213742(Top 14%)3526(Top 23%)3526(Top 172%)
20K12.43 mi3.11 mi4397+3214113+2804113+2803628(Top 14%)3433(Top 23%)3433(Top 167%)
Half13.11 mi0.68 mi4373+244093+204093+204025(Top 15%)3777(Top 25%)3777(Top 184%)
25K15.53 mi2.42 mi4208+1653946+1473946+1473696(Top 14%)3481(Top 23%)3481(Top 170%)
30K18.64 mi3.11 mi4119+893872+743872+743901(Top 15%)3650(Top 24%)3650(Top 178%)
20M20.00 mi1.36 mi4080+393831+413831+413807(Top 14%)3543(Top 23%)3543(Top 173%)
21M21.00 mi1.00 mi4143-633883-523883-524884(Top 18%)4387(Top 29%)4387(Top 214%)
35K21.75 mi0.75 mi4113+303853+303853+303712(Top 14%)3429(Top 23%)3429(Top 167%)
23M23.00 mi1.25 mi3985+1283739+1143739+1142833(Top 11%)2649(Top 17%)2649(Top 129%)
24M24.00 mi1.00 mi3873+1123636+1033636+1032411(Top 9%)2254(Top 15%)2254(Top 110%)
40K24.85 mi0.85 mi3779+943551+853551+852573(Top 10%)2387(Top 16%)2387(Top 116%)
25.2M25.20 mi0.35 mi3768+113541+103541+103387(Top 13%)3070(Top 20%)3070(Top 150%)
Finish26.22 mi1.02 mi3720+483493+483493+483109(Top 12%)2804(Top 18%)2804(Top 137%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3742

Males

3526

M50-54

3526

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4697

Males

4370

M50-54

4370

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3742

Males

3526

M50-54

3526

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3628

Males

3433

M50-54

3433

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4025

Males

3777

M50-54

3777

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3696

Males

3481

M50-54

3481

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

3901

Males

3650

M50-54

3650

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3807

Males

3543

M50-54

3543

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4884

Males

4387

M50-54

4387

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3712

Males

3429

M50-54

3429

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

2833

Males

2649

M50-54

2649

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2411

Males

2254

M50-54

2254

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2573

Males

2387

M50-54

2387

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3387

Males

3070

M50-54

3070

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3109

Males

2804

M50-54

2804

Passing Analysis

Category:
Athletes Passed
2405
Passed By
415
Net Change
+1990
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5710
5K → 10K55847+511#5710#5199
10K → 15K4887+481#5199#4718
15K → 20K3298+321#4718#4397
20K → Half339+24#4397#4373
Half → 25K18621+165#4373#4208
25K → 30K16071+89#4208#4119
30K → 20M7132+39#4119#4080
20M → 21M57120-63#4080#4143
21M → 35K5020+30#4143#4113
35K → 23M13810+128#4113#3985
23M → 24M12210+112#3985#3873
24M → 40K10612+94#3873#3779
40K → 25.2M2615+11#3779#3768
25.2M → Finish8133+48#3768#3720
TOTALS2405415+1990
📊

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