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BOSTON MARATHON 2023

David Buchanan

Bib: 15197•M

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 45%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 50%
Division (M50-54)
#0 / 2052
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
7:53/mi
24:30
↑ 97↓ 3451.5%
10K· 6.21 mi
7:48/mi
48:45
↑ 79↓ 1380.4%
15K· 9.32 mi
7:48/mi
1:13:00
↑ 67↓ 78
20K· 12.43 mi
7:51/mi
1:37:23
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:42:41
↑ 19↓ 370.5%
25K· 15.53 mi
7:57/mi
2:01:57
↑ 66↓ 880.2%
30K· 18.64 mi
8:09/mi
2:27:17
↑ 181↓ 1480.2%
20M
8:13/mi
2:38:27
↑ 64↓ 500.2%
21M
8:44/mi
2:47:11
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:53:03
↑ 17↓ 861.7%
23M
8:13/mi
3:03:20
↑ 23↓ 630.6%
24M
8:10/mi
3:11:30
↓ 821.3%
40K· 24.85 mi
8:24/mi
3:18:41
↓ 200.3%
25.2M
8:42/mi
3:21:41
↑ 13↓ 160.2%
Finish· 26.22 mi
7:39/mi
3:29:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:41
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:46:48
Pace8:09 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:3924:307:5324:30
7:53
-
10K
6.21 mi11:18:5448:457:5124:15
7:48
-0:05
15K
9.32 mi11:43:091:13:007:5024:15
7:48
0:00
20K
12.43 mi12:07:321:37:237:5024:23
7:51
+0:03
Half
13.11 mi12:12:501:42:417:505:18
7:46
-0:05
25K
15.53 mi12:32:062:01:577:5119:16
7:57
+0:11
30K
18.64 mi12:57:262:27:177:5425:20
8:09
+0:12
20M
20.00 mi13:08:362:38:277:5511:10
8:13
+0:04
21M
21.00 mi13:17:202:47:117:588:44
8:44
+0:31
35K
21.75 mi13:23:122:53:037:575:52
7:51
-0:53
23M
23.00 mi13:33:293:03:207:5810:17
8:13
+0:22
24M
24.00 mi13:41:393:11:307:598:10
8:10
-0:03
40K
24.85 mi13:48:503:18:418:007:11
8:24
+0:14
25.2M
25.20 mi13:51:503:21:418:003:00
8:42
+0:18
Finish
26.22 mi13:59:383:29:298:007:48
7:39
-1:03

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

7:39 /mi

Average Pace

8:00 /mi

Slowest Pace

8:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:45

94% of race

Time at Steady Pace

11:44

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:59 /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 mi10:54:3924:307:5324:30
7:53
#13111
10K
6.21 mi11:18:5448:457:5124:15
7:48
#13146
15K
9.32 mi11:43:091:13:007:5024:15
7:48
#12975
20K
12.43 mi12:07:321:37:237:5024:23
7:51
#12725
Half
13.11 mi12:12:501:42:417:505:18
7:46
#12699
25K
15.53 mi12:32:062:01:577:5119:16
7:57
#12591
30K
18.64 mi12:57:262:27:177:5425:20
8:09
#12469
20M
20.00 mi13:08:362:38:277:5511:10
8:13
#12395
21M
21.00 mi13:17:202:47:117:588:44
8:44
#12343
35K
21.75 mi13:23:122:53:037:575:52
7:51
#12280
23M
23.00 mi13:33:293:03:207:5810:17
8:13
#12230
24M
24.00 mi13:41:393:11:307:598:10
8:10
#12233
40K
24.85 mi13:48:503:18:418:007:11
8:24
#12238
25.2M
25.20 mi13:51:503:21:418:003:00
8:42
#12204
Finish
26.22 mi13:59:383:29:298:007:48
7:39
#12090
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi131119585958512756(Top 48%)9413(Top 62%)9413(Top 459%)
10K6.21 mi3.10 mi13146-359592-79592-713143(Top 49%)9612(Top 63%)9612(Top 468%)
15K9.32 mi3.11 mi12975+1719514+789514+7812756(Top 48%)9413(Top 62%)9413(Top 459%)
20K12.43 mi3.11 mi12725+2509389+1259389+12512138(Top 46%)9073(Top 60%)9073(Top 442%)
Half13.11 mi0.68 mi12699+269368+219368+2112388(Top 47%)9224(Top 61%)9224(Top 450%)
25K15.53 mi2.42 mi12591+1089298+709298+7012261(Top 46%)9012(Top 59%)9012(Top 439%)
30K18.64 mi3.11 mi12469+1229214+849214+8412014(Top 45%)8807(Top 58%)8807(Top 429%)
20M20.00 mi1.36 mi12395+749166+489166+4811799(Top 44%)8626(Top 57%)8626(Top 420%)
21M21.00 mi1.00 mi12343+529127+399127+3911853(Top 45%)8514(Top 56%)8514(Top 415%)
35K21.75 mi0.75 mi12280+639080+479080+4710944(Top 41%)8093(Top 53%)8093(Top 394%)
23M23.00 mi1.25 mi12230+509030+509030+5011263(Top 42%)8112(Top 53%)8112(Top 395%)
24M24.00 mi1.00 mi12233-39010+209010+2012350(Top 46%)8561(Top 56%)8561(Top 417%)
40K24.85 mi0.85 mi12238-58999+118999+1112691(Top 48%)8626(Top 57%)8626(Top 420%)
25.2M25.20 mi0.35 mi12204+348970+298970+2910718(Top 40%)7675(Top 51%)7675(Top 374%)
Finish26.22 mi1.02 mi12090+1148898+728898+729650(Top 36%)7101(Top 47%)7101(Top 346%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

12756

Males

9413

M50-54

9413

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13143

Males

9612

M50-54

9612

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

12756

Males

9413

M50-54

9413

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12138

Males

9073

M50-54

9073

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

12388

Males

9224

M50-54

9224

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12261

Males

9012

M50-54

9012

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12014

Males

8807

M50-54

8807

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

11799

Males

8626

M50-54

8626

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

11853

Males

8514

M50-54

8514

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

10944

Males

8093

M50-54

8093

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

11263

Males

8112

M50-54

8112

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12350

Males

8561

M50-54

8561

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12691

Males

8626

M50-54

8626

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10718

Males

7675

M50-54

7675

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9650

Males

7101

M50-54

7101

Passing Analysis

Category:
Athletes Passed
2160
Passed By
1139
Net Change
+1021
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13111
5K → 10K294329-35#13111#13146
10K → 15K300129+171#13146#12975
15K → 20K32171+250#12975#12725
20K → Half5327+26#12725#12699
Half → 25K18880+108#12699#12591
25K → 30K256134+122#12591#12469
30K → 20M12854+74#12469#12395
20M → 21M12169+52#12395#12343
21M → 35K7815+63#12343#12280
35K → 23M11666+50#12280#12230
23M → 24M5659-3#12230#12233
24M → 40K5661-5#12233#12238
40K → 25.2M5218+34#12238#12204
25.2M → Finish14127+114#12204#12090
TOTALS21601139+1021
📊

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