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BOSTON MARATHON 2023

Alexander Baker

MA

Bib: 29728 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
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
8:44/mi
27:07
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:19/mi
52:58
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:30/mi
1:19:23
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:28/mi
1:45:42
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:18/mi
1:51:22
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:27/mi
2:11:51
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:41/mi
2:38:49
↑ 181↓ 1480.2%
138 ft elev
20M
8:45/mi
2:50:43
↑ 64↓ 500.2%
148 ft elev
21M
9:12/mi
2:59:55
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:45/mi
3:06:28
↑ 17↓ 861.7%
156 ft elev
23M
8:54/mi
3:17:36
↑ 23↓ 630.6%
116 ft elev
24M
8:49/mi
3:26:25
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:14/mi
3:34:19
↓ 200.3%
20 ft elev
25.2M
10:18/mi
3:37:52
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:27/mi
3:47:30
↑ 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
1:51:228:30 /mi⚡ faster
2nd Half
1:56:088:52 /mi+4.3%
Positive split — 4.3% 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
27:078:443.11 mi27:07
8:44
-
10K
52:588:313.10 mi25:51
8:19
-0:25
15K
1:19:238:313.11 mi26:25
8:30
+0:11
20K
1:45:428:303.11 mi26:19
8:28
-0:02
Half(13.11 mi)
1:51:228:300.68 mi5:40
8:18
-0:10
25K
2:11:518:292.42 mi20:29
8:27
+0:09
30K
2:38:498:313.11 mi26:58
8:41
+0:14
20M
2:50:438:321.36 mi11:54
8:45
+0:04
21M
2:59:558:341.00 mi9:12
9:12
+0:27
35K
3:06:288:340.75 mi6:33
8:45
-0:27
23M
3:17:368:351.25 mi11:08
8:54
+0:09
24M
3:26:258:361.00 mi8:49
8:49
-0:05
40K
3:34:198:370.85 mi7:54
9:14
+0:25
25.2M
3:37:528:390.35 mi3:33
10:18
+1:04
Finish(26.22 mi)
3:47:308:411.02 mi9:38
9:27
-0:51
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:18 /mi

Average Pace

8:41 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:18:19

34% of race

Time at Steady Pace

1:58:54

52% of race

Time at Slower Pace

30:17

13% of race

Average Pace: 8:41 /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. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi190471179411794178171139811398
10K3.10 mi18048+99911463+33111463+331170601113411134
15K3.11 mi17949+9911436+2711436+27178171139811398
20K3.11 mi17601+34811306+13011306+130166541090210902
Half(13.11 mi)0.68 mi17523+7811267+3911267+39164811087310873
25K2.42 mi17245+27811139+12811139+128158911050110501
30K3.11 mi16891+35410979+16010979+160153891021110211
20M1.36 mi16749+14210893+8610893+86151881006810068
21M1.00 mi16595+15410814+7910814+791447297129712
35K0.75 mi16604-910808+610808+6166811056710567
23M1.25 mi16530+7410764+4410764+44154861002610026
24M1.00 mi16516+1410740+2410740+24162741029810298
40K0.85 mi16533-1710728+1210728+12172501068810688
25.2M0.35 mi16573-4010740-1210740-12184121120411204
Finish(26.22 mi)1.02 mi16745-17210795-5510795-55199421195311953

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17817

Males

11398

M40-44

11398

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

17060

Males

11134

M40-44

11134

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17817

Males

11398

M40-44

11398

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

16654

Males

10902

M40-44

10902

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

16481

Males

10873

M40-44

10873

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

15891

Males

10501

M40-44

10501

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

15389

Males

10211

M40-44

10211

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

15188

Males

10068

M40-44

10068

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

14472

Males

9712

M40-44

9712

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16681

Males

10567

M40-44

10567

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

15486

Males

10026

M40-44

10026

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16274

Males

10298

M40-44

10298

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17250

Males

10688

M40-44

10688

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18412

Males

11204

M40-44

11204

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

19942

Males

11953

M40-44

11953

Passing Analysis

Category:
Passed
3140
Passed By
838
Net Change
+2302
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19047
5K → 10K109596+999#19047#18048
10K → 15K238139+99#18048#17949
15K → 20K38840+348#17949#17601
20K → Half8810+78#17601#17523
Half → 25K29214+278#17523#17245
25K → 30K37723+354#17245#16891
30K → 20M15917+142#16891#16749
20M → 21M17723+154#16749#16595
21M → 35K4554-9#16595#16604
35K → 23M11541+74#16604#16530
23M → 24M6753+14#16530#16516
24M → 40K5572-17#16516#16533
40K → 25.2M2060-40#16533#16573
25.2M → Finish24196-172#16573#16745
TOTALS3140838+2302

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