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BOSTON MARATHON 2023

Chad Smith

GA

Bib: 15223 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
7:27/mi
23:08
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:19/mi
45:51
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:25/mi
1:08:53
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:31/mi
1:32:15
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:29/mi
1:37:21
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:31/mi
1:55:35
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:16/mi
2:21:16
↑ 181↓ 1480.2%
138 ft elev
20M
8:33/mi
2:32:53
↑ 64↓ 500.2%
148 ft elev
21M
9:50/mi
2:42:43
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:51/mi
2:49:20
↑ 17↓ 861.7%
156 ft elev
23M
9:50/mi
3:01:39
↑ 23↓ 630.6%
116 ft elev
24M
11:19/mi
3:12:58
↓ 821.3%
34 ft elev
40K· 24.85 mi
11:49/mi
3:23:04
↓ 200.3%
20 ft elev
25.2M
13:06/mi
3:27:35
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
11:11/mi
3:38:59
↑ 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
1:37:217:26 /mi⚡ faster
2nd Half
2:01:389:17 /mi+24.9%
Positive split — 24.9% 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
23:087:273.11 mi23:08
7:27
-
10K
45:517:233.10 mi22:43
7:19
-0:08
15K
1:08:537:233.11 mi23:02
7:25
+0:06
20K
1:32:157:253.11 mi23:22
7:31
+0:06
Half(13.11 mi)
1:37:217:260.68 mi5:06
7:29
-0:02
25K
1:55:357:262.42 mi18:14
7:31
+0:02
30K
2:21:167:353.11 mi25:41
8:16
+0:45
20M
2:32:537:391.36 mi11:37
8:33
+0:17
21M
2:42:437:451.00 mi9:50
9:50
+1:17
35K
2:49:207:470.75 mi6:37
8:51
-0:59
23M
3:01:397:541.25 mi12:19
9:50
+0:59
24M
3:12:588:021.00 mi11:19
11:19
+1:29
40K
3:23:048:100.85 mi10:06
11:49
+0:30
25.2M
3:27:358:140.35 mi4:31
13:06
+1:17
Finish(26.22 mi)
3:38:598:211.02 mi11:24
11:11
-1:55
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:19 /mi

Average Pace

8:21 /mi

Slowest Pace

13:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:55:35

53% of race

Time at Steady Pace

43:55

20% of race

Time at Slower Pace

59:29

27% of race

Average Pace: 8:21 /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. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi919277177717945378417841
10K3.10 mi9023+1697588+1297588+129893075407540
15K3.11 mi9117-947637-497637-49945378417841
20K3.11 mi9176-597662-257662-25947477877787
Half(13.11 mi)0.68 mi9216-407679-177679-171003281428142
25K2.42 mi9143+737635+447635+44892573907390
30K3.11 mi9806-6637991-3567991-3561279791519151
20M1.36 mi10110-3048119-1288119-1281391495399539
21M1.00 mi10605-4958338-2198338-219173591093010930
35K0.75 mi10868-2638447-1098447-109171341075310753
23M1.25 mi11631-7638777-3308777-330195181180211802
24M1.00 mi12690-10599208-4319208-431236011363113631
40K0.85 mi13537-8479540-3329540-332236441360213602
25.2M0.35 mi13921-3849671-1319671-131240621381613816
Finish(26.22 mi)1.02 mi14682-7619954-2839954-283242711395613956

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9453

Males

7841

M50-54

7841

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

8930

Males

7540

M50-54

7540

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9453

Males

7841

M50-54

7841

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9474

Males

7787

M50-54

7787

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10032

Males

8142

M50-54

8142

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

8925

Males

7390

M50-54

7390

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

12797

Males

9151

M50-54

9151

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13914

Males

9539

M50-54

9539

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

17359

Males

10930

M50-54

10930

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

17134

Males

10753

M50-54

10753

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19518

Males

11802

M50-54

11802

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

23601

Males

13631

M50-54

13631

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23644

Males

13602

M50-54

13602

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

24062

Males

13816

M50-54

13816

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2story building
+22ft-21ft

Overall

24271

Males

13956

M50-54

13956

Passing Analysis

Category:
Passed
851
Passed By
6340
Net Change
-5490
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9192
5K → 10K352183+169#9192#9023
10K → 15K113207-94#9023#9117
15K → 20K114173-59#9117#9176
20K → Half1252-40#9176#9216
Half → 25K14572+73#9216#9143
25K → 30K37700-663#9143#9806
30K → 20M30333-304#9806#10110
20M → 21M15510-495#10110#10605
21M → 35K12275-263#10605#10868
35K → 23M11774-763#10868#11631
23M → 24M21061-1059#11631#12690
24M → 40K4851-847#12690#13537
40K → 25.2M0384-384#13537#13921
25.2M → Finish4765-761#13921#14682
TOTALS8516340-5490

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