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BOSTON MARATHON 2023

Alexander Smith

Bib: 5105•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 22%
Gender (Male)
#0 / 15176
Top 35%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:08
Rank: #4706
Start → 5K
21:08 | 6:48/mi
10K· 6.21 mi
42:11
Rank: #4874 (-168)
5K → 10K
21:03 | 6:47/mi
15K· 9.32 mi
1:03:21
Rank: #4977 (-103)
10K → 15K
21:10 | 6:49/mi
20K· 12.43 mi
1:24:44
Rank: #5009 (-32)
15K → 20K
21:23 | 6:53/mi
Half· 13.11 mi
1:29:24
Rank: #5052 (-43)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:46:23
Rank: #5175 (-123)
Half → 25K
16:59 | 7:00/mi
30K· 18.64 mi
2:09:17
Rank: #5449 (-274)
25K → 30K
22:54 | 7:22/mi
20M
2:19:27
Rank: #5500 (-51)
30K → 20M
10:10 | 7:29/mi
21M
2:27:34
Rank: #5579 (-79)
20M → 21M
8:07 | 8:07/mi
35K· 21.75 mi
2:33:13
Rank: #5661 (-82)
21M → 35K
5:39 | 7:33/mi
23M
2:43:01
Rank: #5742 (-81)
35K → 23M
9:48 | 7:50/mi
24M
2:50:51
Rank: #5834 (-92)
23M → 24M
7:50 | 7:50/mi
40K· 24.85 mi
2:57:39
Rank: #5920 (-86)
24M → 40K
6:48 | 7:57/mi
25.2M
3:00:30
Rank: #5933 (-13)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:08:07
Rank: #5972 (-39)
25.2M → Finish
7:37 | 7:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:24
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:38:43
Pace7:32 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:4521:086:4821:08
6:48
-
10K
6.21 mi10:44:4842:116:4721:03
6:47
-0:01
15K
9.32 mi11:05:581:03:216:4821:10
6:49
+0:02
20K
12.43 mi11:27:211:24:446:4921:23
6:53
+0:04
Half
13.11 mi11:32:011:29:246:494:40
6:50
-0:03
25K
15.53 mi11:49:001:46:236:5116:59
7:00
+0:10
30K
18.64 mi12:11:542:09:176:5622:54
7:22
+0:22
20M
20.00 mi12:22:042:19:276:5810:10
7:29
+0:07
21M
21.00 mi12:30:112:27:347:028:07
8:07
+0:38
35K
21.75 mi12:35:502:33:137:035:39
7:33
-0:34
23M
23.00 mi12:45:382:43:017:059:48
7:50
+0:17
24M
24.00 mi12:53:282:50:517:077:50
7:50
0:00
40K
24.85 mi13:00:162:57:397:096:48
7:57
+0:07
25.2M
25.20 mi13:03:073:00:307:102:51
8:16
+0:19
Finish
26.22 mi13:10:443:08:077:117:37
7:28
-0:48

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

6:47 /mi

Average Pace

7:11 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:23

57% of race

Time at Steady Pace

46:20

25% of race

Time at Slower Pace

35:24

19% of race

Average Pace: 7:10 /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 mi10:23:4521:086:4821:08
6:48
#4706
10K
6.21 mi10:44:4842:116:4721:03
6:47
#4874
15K
9.32 mi11:05:581:03:216:4821:10
6:49
#4977
20K
12.43 mi11:27:211:24:446:4921:23
6:53
#5009
Half
13.11 mi11:32:011:29:246:494:40
6:50
#5052
25K
15.53 mi11:49:001:46:236:5116:59
7:00
#5175
30K
18.64 mi12:11:542:09:176:5622:54
7:22
#5449
20M
20.00 mi12:22:042:19:276:5810:10
7:29
#5500
21M
21.00 mi12:30:112:27:347:028:07
8:07
#5579
35K
21.75 mi12:35:502:33:137:035:39
7:33
#5661
23M
23.00 mi12:45:382:43:017:059:48
7:50
#5742
24M
24.00 mi12:53:282:50:517:077:50
7:50
#5834
40K
24.85 mi13:00:162:57:397:096:48
7:57
#5920
25.2M
25.20 mi13:03:073:00:307:102:51
8:16
#5933
Finish
26.22 mi13:10:443:08:077:117:37
7:28
#5972
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4706438043805255(Top 20%)4859(Top 32%)4859(Top 92%)
10K6.21 mi3.10 mi4874-1684527-1474527-1475068(Top 19%)4691(Top 31%)4691(Top 89%)
15K9.32 mi3.11 mi4977-1034621-944621-945255(Top 20%)4859(Top 32%)4859(Top 92%)
20K12.43 mi3.11 mi5009-324657-364657-365214(Top 20%)4818(Top 32%)4818(Top 91%)
Half13.11 mi0.68 mi5052-434692-354692-355616(Top 21%)5176(Top 34%)5176(Top 98%)
25K15.53 mi2.42 mi5175-1234797-1054797-1055603(Top 21%)5149(Top 34%)5149(Top 97%)
30K18.64 mi3.11 mi5449-2745027-2305027-2306417(Top 24%)5670(Top 37%)5670(Top 107%)
20M20.00 mi1.36 mi5500-515059-325059-326641(Top 25%)5729(Top 38%)5729(Top 108%)
21M21.00 mi1.00 mi5579-795119-605119-608070(Top 30%)6506(Top 43%)6506(Top 123%)
35K21.75 mi0.75 mi5661-825184-655184-658844(Top 33%)6968(Top 46%)6968(Top 132%)
23M23.00 mi1.25 mi5742-815220-365220-368569(Top 32%)6727(Top 44%)6727(Top 127%)
24M24.00 mi1.00 mi5834-925284-645284-649996(Top 38%)7377(Top 49%)7377(Top 140%)
40K24.85 mi0.85 mi5920-865333-495333-499681(Top 36%)7159(Top 47%)7159(Top 135%)
25.2M25.20 mi0.35 mi5933-135341-85341-87964(Top 30%)6124(Top 40%)6124(Top 116%)
Finish26.22 mi1.02 mi5972-395363-225363-228322(Top 31%)6338(Top 42%)6338(Top 120%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5255

Males

4859

M18-39

4859

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5068

Males

4691

M18-39

4691

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5255

Males

4859

M18-39

4859

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5214

Males

4818

M18-39

4818

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5616

Males

5176

M18-39

5176

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5603

Males

5149

M18-39

5149

25K→30K

15.5 - 18.6 mi

Top 24%
×9stories
+181ft-148ft

Overall

6417

Males

5670

M18-39

5670

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6641

Males

5729

M18-39

5729

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8070

Males

6506

M18-39

6506

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8844

Males

6968

M18-39

6968

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

8569

Males

6727

M18-39

6727

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

9996

Males

7377

M18-39

7377

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9681

Males

7159

M18-39

7159

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7964

Males

6124

M18-39

6124

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8322

Males

6338

M18-39

6338

Passing Analysis

Category:
Athletes Passed
697
Passed By
1963
Net Change
-1266
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4706
5K → 10K128296-168#4706#4874
10K → 15K82185-103#4874#4977
15K → 20K95127-32#4977#5009
20K → Half1154-43#5009#5052
Half → 25K69192-123#5052#5175
25K → 30K71345-274#5175#5449
30K → 20M3889-51#5449#5500
20M → 21M27106-79#5500#5579
21M → 35K1597-82#5579#5661
35K → 23M50131-81#5661#5742
23M → 24M27119-92#5742#5834
24M → 40K30116-86#5834#5920
40K → 25.2M1124-13#5920#5933
25.2M → Finish4382-39#5933#5972
TOTALS6971963-1266
📊

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