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BOSTON MARATHON 2023

David Buse

CA

Bib: 12551 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 31%
Gender (Male)
#0 / 15176
Top 45%
Masters (Masters Men)
#0 / 9891
Top 33%
Division (M45-49)
#0 / 2252
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:31/mi
23:20
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:22/mi
46:14
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:26/mi
1:09:20
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:27/mi
1:32:30
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:21/mi
1:37:31
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:27/mi
1:55:36
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:34/mi
2:19:06
↑ 181↓ 1480.2%
138 ft elev
20M
7:30/mi
2:29:18
↑ 64↓ 500.2%
148 ft elev
21M
7:46/mi
2:37:04
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:17/mi
2:42:31
↑ 17↓ 861.7%
156 ft elev
23M
7:34/mi
2:52:00
↑ 23↓ 630.6%
116 ft elev
24M
7:22/mi
2:59:22
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:34/mi
3:05:50
↓ 200.3%
20 ft elev
25.2M
8:10/mi
3:08:39
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:49/mi
3:16:37
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:37:317:26 /mi⚡ faster
2nd Half
1:39:067:34 /mi+1.6%
Positive split — 1.6% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
23:207:313.11 mi23:20
7:31
-
10K
46:147:263.10 mi22:54
7:22
-0:09
15K
1:09:207:263.11 mi23:06
7:26
+0:04
20K
1:32:307:273.11 mi23:10
7:27
+0:01
Half(13.11 mi)
1:37:317:260.68 mi5:01
7:21
-0:06
25K
1:55:367:262.42 mi18:05
7:27
+0:06
30K
2:19:067:283.11 mi23:30
7:34
+0:07
20M
2:29:187:281.36 mi10:12
7:30
-0:04
21M
2:37:047:291.00 mi7:46
7:46
+0:16
35K
2:42:317:280.75 mi5:27
7:17
-0:29
23M
2:52:007:291.25 mi9:29
7:34
+0:17
24M
2:59:227:281.00 mi7:22
7:22
-0:12
40K
3:05:507:290.85 mi6:28
7:34
+0:12
25.2M
3:08:397:290.35 mi2:49
8:10
+0:36
Finish(26.22 mi)
3:16:377:301.02 mi7:58
7:49
-0:21
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:17 /mi

Average Pace

7:30 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

3:13:48

99% of race

Time at Steady Pace

2:49

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:30 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi970779817981963379377937
10K3.10 mi9496+2117874+1077874+107938077907790
15K3.11 mi9507-117875-17875-1963379377937
20K3.11 mi9355+1527765+1107765+110895674747474
Half(13.11 mi)0.68 mi9333+227750+157750+15896074767476
25K2.42 mi9148+1857636+1147636+114845970997099
30K3.11 mi8843+3057411+2257411+225766864926492
20M1.36 mi8672+1717278+1337278+133682658665866
21M1.00 mi8498+1747152+1267152+126601152095209
35K0.75 mi8435+637099+537099+53703859235923
23M1.25 mi8303+1327003+967003+96690657715771
24M1.00 mi8192+1116908+956908+95682856175617
40K0.85 mi8138+546852+566852+56709356865686
25.2M0.35 mi8102+366821+316821+31746258625862
Finish(26.22 mi)1.02 mi8186-846851-306851-301076576767676

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9633

Males

7937

M45-49

7937

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9380

Males

7790

M45-49

7790

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9633

Males

7937

M45-49

7937

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

8956

Males

7474

M45-49

7474

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

8960

Males

7476

M45-49

7476

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8459

Males

7099

M45-49

7099

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

7668

Males

6492

M45-49

6492

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

6826

Males

5866

M45-49

5866

20M→21M

20.0 - 21.0 mi

Top 23%
×8story building
+106ft-24ft

Overall

6011

Males

5209

M45-49

5209

21M→35K

21.0 - 21.8 mi

Top 26%
×7story building
+17ft-86ft

Overall

7038

Males

5923

M45-49

5923

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

6906

Males

5771

M45-49

5771

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

6828

Males

5617

M45-49

5617

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7093

Males

5686

M45-49

5686

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7462

Males

5862

M45-49

5862

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

10765

Males

7676

M45-49

7676

Passing Analysis

Category:
Passed
2290
Passed By
769
Net Change
+1521
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9707
5K → 10K415204+211#9707#9496
10K → 15K161172-11#9496#9507
15K → 20K22270+152#9507#9355
20K → Half3917+22#9355#9333
Half → 25K21732+185#9333#9148
25K → 30K34540+305#9148#8843
30K → 20M18413+171#8843#8672
20M → 21M18410+174#8672#8498
21M → 35K7613+63#8498#8435
35K → 23M15321+132#8435#8303
23M → 24M12413+111#8303#8192
24M → 40K8632+54#8192#8138
40K → 25.2M5014+36#8138#8102
25.2M → Finish34118-84#8102#8186
TOTALS2290769+1521

Passing Charts

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