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BOSTON MARATHON 2023

Kevin Alexander

Bib: 5189•M

TX

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 20%
Gender (Male)
#0 / 15176
Top 32%
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
21:24
Rank: #5465
Start → 5K
21:24 | 6:53/mi
10K· 6.21 mi
42:51
Rank: #5788 (-323)
5K → 10K
21:27 | 6:54/mi
15K· 9.32 mi
1:04:20
Rank: #5858 (-70)
10K → 15K
21:29 | 6:55/mi
20K· 12.43 mi
1:25:43
Rank: #5691 (+167)
15K → 20K
21:23 | 6:53/mi
Half· 13.11 mi
1:30:20
Rank: #5656 (+35)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:46:51
Rank: #5433 (+223)
Half → 25K
16:31 | 6:49/mi
30K· 18.64 mi
2:09:17
Rank: #5447 (-14)
25K → 30K
22:26 | 7:13/mi
20M
2:19:09
Rank: #5406 (+41)
30K → 20M
9:52 | 7:16/mi
21M
2:27:16
Rank: #5497 (-91)
20M → 21M
8:07 | 8:07/mi
35K· 21.75 mi
2:32:32
Rank: #5468 (+29)
21M → 35K
5:16 | 7:02/mi
23M
2:41:45
Rank: #5414 (+54)
35K → 23M
9:13 | 7:22/mi
24M
2:48:50
Rank: #5356 (+58)
23M → 24M
7:05 | 7:05/mi
40K· 24.85 mi
2:55:10
Rank: #5324 (+32)
24M → 40K
6:20 | 7:24/mi
25.2M
2:58:04
Rank: #5353 (-29)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
3:05:39
Rank: #5394 (-41)
25.2M → Finish
7:35 | 7:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:20
Pace6:53 /mi
2nd Half
Distance13.11 mi
Time1:35:19
Pace7:16 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0521:246:5321:24
6:53
-
10K
6.21 mi10:45:3242:516:5421:27
6:54
+0:01
15K
9.32 mi11:07:011:04:206:5421:29
6:55
+0:01
20K
12.43 mi11:28:241:25:436:5421:23
6:53
-0:02
Half
13.11 mi11:33:011:30:206:534:37
6:46
-0:07
25K
15.53 mi11:49:321:46:516:5316:31
6:49
+0:03
30K
18.64 mi12:11:582:09:176:5622:26
7:13
+0:24
20M
20.00 mi12:21:502:19:096:579:52
7:16
+0:03
21M
21.00 mi12:29:572:27:167:018:07
8:07
+0:51
35K
21.75 mi12:35:132:32:327:015:16
7:02
-1:05
23M
23.00 mi12:44:262:41:457:029:13
7:22
+0:20
24M
24.00 mi12:51:312:48:507:027:05
7:05
-0:17
40K
24.85 mi12:57:512:55:107:036:20
7:24
+0:19
25.2M
25.20 mi13:00:452:58:047:042:54
8:25
+1:01
Finish
26.22 mi13:08:203:05:397:057:35
7:26
-0:59

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

6:46 /mi

Average Pace

7:05 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

21:08

11% of race

Time at Steady Pace

2:10:22

70% of race

Time at Slower Pace

34:09

18% of race

Average Pace: 7:05 /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 mi10:24:0521:246:5321:24
6:53
#5465
10K
6.21 mi10:45:3242:516:5421:27
6:54
#5788
15K
9.32 mi11:07:011:04:206:5421:29
6:55
#5858
20K
12.43 mi11:28:241:25:436:5421:23
6:53
#5691
Half
13.11 mi11:33:011:30:206:534:37
6:46
#5656
25K
15.53 mi11:49:321:46:516:5316:31
6:49
#5433
30K
18.64 mi12:11:582:09:176:5622:26
7:13
#5447
20M
20.00 mi12:21:502:19:096:579:52
7:16
#5406
21M
21.00 mi12:29:572:27:167:018:07
8:07
#5497
35K
21.75 mi12:35:132:32:327:015:16
7:02
#5468
23M
23.00 mi12:44:262:41:457:029:13
7:22
#5414
24M
24.00 mi12:51:312:48:507:027:05
7:05
#5356
40K
24.85 mi12:57:512:55:107:036:20
7:24
#5324
25.2M
25.20 mi13:00:452:58:047:042:54
8:25
#5353
Finish
26.22 mi13:08:203:05:397:057:35
7:26
#5394
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5465504850486052(Top 23%)5498(Top 36%)5498(Top 104%)
10K6.21 mi3.10 mi5788-3235313-2655313-2656153(Top 23%)5579(Top 37%)5579(Top 106%)
15K9.32 mi3.11 mi5858-705369-565369-566052(Top 23%)5498(Top 36%)5498(Top 104%)
20K12.43 mi3.11 mi5691+1675239+1305239+1305208(Top 20%)4812(Top 32%)4812(Top 91%)
Half13.11 mi0.68 mi5656+355212+275212+275010(Top 19%)4642(Top 31%)4642(Top 88%)
25K15.53 mi2.42 mi5433+2235017+1955017+1954272(Top 16%)3997(Top 26%)3997(Top 76%)
30K18.64 mi3.11 mi5447-145025-85025-85600(Top 21%)5075(Top 33%)5075(Top 96%)
20M20.00 mi1.36 mi5406+414982+434982+435424(Top 20%)4863(Top 32%)4863(Top 92%)
21M21.00 mi1.00 mi5497-915048-665048-668065(Top 30%)6501(Top 43%)6501(Top 123%)
35K21.75 mi0.75 mi5468+295017+315017+315546(Top 21%)4909(Top 32%)4909(Top 93%)
23M23.00 mi1.25 mi5414+544963+544963+545624(Top 21%)4926(Top 32%)4926(Top 93%)
24M24.00 mi1.00 mi5356+584906+574906+575097(Top 19%)4497(Top 30%)4497(Top 85%)
40K24.85 mi0.85 mi5324+324870+364870+366107(Top 23%)5081(Top 33%)5081(Top 96%)
25.2M25.20 mi0.35 mi5353-294886-164886-168849(Top 33%)6622(Top 44%)6622(Top 125%)
Finish26.22 mi1.02 mi5394-414917-314917-318044(Top 30%)6180(Top 41%)6180(Top 117%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6052

Males

5498

M18-39

5498

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

6153

Males

5579

M18-39

5579

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6052

Males

5498

M18-39

5498

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5208

Males

4812

M18-39

4812

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5010

Males

4642

M18-39

4642

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4272

Males

3997

M18-39

3997

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5600

Males

5075

M18-39

5075

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5424

Males

4863

M18-39

4863

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8065

Males

6501

M18-39

6501

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5546

Males

4909

M18-39

4909

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5624

Males

4926

M18-39

4926

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5097

Males

4497

M18-39

4497

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6107

Males

5081

M18-39

5081

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8849

Males

6622

M18-39

6622

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

8044

Males

6180

M18-39

6180

Passing Analysis

Category:
Athletes Passed
1206
Passed By
1135
Net Change
+71
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5465
5K → 10K91414-323#5465#5788
10K → 15K90160-70#5788#5858
15K → 20K19932+167#5858#5691
20K → Half361+35#5691#5656
Half → 25K2274+223#5656#5433
25K → 30K125139-14#5433#5447
30K → 20M7433+41#5447#5406
20M → 21M29120-91#5406#5497
21M → 35K4516+29#5497#5468
35K → 23M9743+54#5468#5414
23M → 24M8123+58#5414#5356
24M → 40K6432+32#5356#5324
40K → 25.2M1443-29#5324#5353
25.2M → Finish3475-41#5353#5394
TOTALS12061135+71
📊

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