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BOSTON MARATHON 2023

Demerval Sousa Filho

Bib: 4752•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 27%
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
20:45
Rank: #3481
Start → 5K
20:45 | 6:41/mi
10K· 6.21 mi
41:40
Rank: #4038 (-557)
5K → 10K
20:55 | 6:44/mi
15K· 9.32 mi
1:02:38
Rank: #4211 (-173)
10K → 15K
20:58 | 6:45/mi
20K· 12.43 mi
1:23:54
Rank: #4359 (-148)
15K → 20K
21:16 | 6:51/mi
Half· 13.11 mi
1:28:33
Rank: #4410 (-51)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:45:13
Rank: #4431 (-21)
Half → 25K
16:40 | 6:52/mi
30K· 18.64 mi
2:07:21
Rank: #4594 (-163)
25K → 30K
22:08 | 7:07/mi
20M
2:17:02
Rank: #4595 (-1)
30K → 20M
9:41 | 7:08/mi
21M
2:24:29
Rank: #4585 (+10)
20M → 21M
7:27 | 7:27/mi
35K· 21.75 mi
2:29:34
Rank: #4553 (+32)
21M → 35K
5:05 | 6:48/mi
23M
2:38:16
Rank: #4460 (+93)
35K → 23M
8:42 | 6:57/mi
24M
2:45:02
Rank: #4387 (+73)
23M → 24M
6:46 | 6:46/mi
40K· 24.85 mi
2:51:06
Rank: #4384 (+3)
24M → 40K
6:04 | 7:06/mi
25.2M
2:53:43
Rank: #4367 (+17)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:00:55
Rank: #4401 (-34)
25.2M → Finish
7:12 | 7:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:33
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:32:22
Pace7:03 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3020:456:4120:45
6:41
-
10K
6.21 mi10:43:2541:406:4220:55
6:44
+0:03
15K
9.32 mi11:04:231:02:386:4320:58
6:45
+0:01
20K
12.43 mi11:25:391:23:546:4521:16
6:51
+0:06
Half
13.11 mi11:30:181:28:336:454:39
6:49
-0:02
25K
15.53 mi11:46:581:45:136:4616:40
6:52
+0:03
30K
18.64 mi12:09:062:07:216:5022:08
7:07
+0:15
20M
20.00 mi12:18:472:17:026:519:41
7:08
+0:01
21M
21.00 mi12:26:142:24:296:537:27
7:27
+0:19
35K
21.75 mi12:31:192:29:346:535:05
6:48
-0:39
23M
23.00 mi12:40:012:38:166:538:42
6:57
+0:09
24M
24.00 mi12:46:472:45:026:536:46
6:46
-0:11
40K
24.85 mi12:52:512:51:066:536:04
7:06
+0:20
25.2M
25.20 mi12:55:282:53:436:542:37
7:35
+0:29
Finish
26.22 mi13:02:403:00:556:547:12
7:04
-0:31

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

6:41 /mi

Average Pace

6:54 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:51

94% of race

Time at Steady Pace

10:04

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:54 /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 mi10:22:3020:456:4120:45
6:41
#3481
10K
6.21 mi10:43:2541:406:4220:55
6:44
#4038
15K
9.32 mi11:04:231:02:386:4320:58
6:45
#4211
20K
12.43 mi11:25:391:23:546:4521:16
6:51
#4359
Half
13.11 mi11:30:181:28:336:454:39
6:49
#4410
25K
15.53 mi11:46:581:45:136:4616:40
6:52
#4431
30K
18.64 mi12:09:062:07:216:5022:08
7:07
#4594
20M
20.00 mi12:18:472:17:026:519:41
7:08
#4595
21M
21.00 mi12:26:142:24:296:537:27
7:27
#4585
35K
21.75 mi12:31:192:29:346:535:05
6:48
#4553
23M
23.00 mi12:40:012:38:166:538:42
6:57
#4460
24M
24.00 mi12:46:472:45:026:536:46
6:46
#4387
40K
24.85 mi12:52:512:51:066:536:04
7:06
#4384
25.2M
25.20 mi12:55:282:53:436:542:37
7:35
#4367
Finish
26.22 mi13:02:403:00:556:547:12
7:04
#4401
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3481328232824588(Top 17%)4284(Top 28%)4284(Top 81%)
10K6.21 mi3.10 mi4038-5573795-5133795-5134654(Top 17%)4338(Top 29%)4338(Top 82%)
15K9.32 mi3.11 mi4211-1733948-1533948-1534588(Top 17%)4284(Top 28%)4284(Top 81%)
20K12.43 mi3.11 mi4359-1484079-1314079-1314856(Top 18%)4508(Top 30%)4508(Top 85%)
Half13.11 mi0.68 mi4410-514127-484127-485326(Top 20%)4909(Top 32%)4909(Top 93%)
25K15.53 mi2.42 mi4431-214144-174144-174759(Top 18%)4416(Top 29%)4416(Top 84%)
30K18.64 mi3.11 mi4594-1634284-1404284-1405057(Top 19%)4646(Top 31%)4646(Top 88%)
20M20.00 mi1.36 mi4595-1428442844732(Top 18%)4322(Top 28%)4322(Top 82%)
21M21.00 mi1.00 mi4585+104273+114273+114343(Top 16%)3969(Top 26%)3969(Top 75%)
35K21.75 mi0.75 mi4553+324244+294244+294167(Top 16%)3817(Top 25%)3817(Top 72%)
23M23.00 mi1.25 mi4460+934160+844160+843531(Top 13%)3272(Top 22%)3272(Top 62%)
24M24.00 mi1.00 mi4387+734100+604100+603487(Top 13%)3212(Top 21%)3212(Top 61%)
40K24.85 mi0.85 mi4384+34093+74093+74333(Top 16%)3849(Top 25%)3849(Top 73%)
25.2M25.20 mi0.35 mi4367+174074+194074+194294(Top 16%)3764(Top 25%)3764(Top 71%)
Finish26.22 mi1.02 mi4401-344102-284102-285589(Top 21%)4643(Top 31%)4643(Top 88%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4588

Males

4284

M18-39

4284

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4654

Males

4338

M18-39

4338

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4588

Males

4284

M18-39

4284

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4856

Males

4508

M18-39

4508

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5326

Males

4909

M18-39

4909

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4759

Males

4416

M18-39

4416

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

5057

Males

4646

M18-39

4646

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4732

Males

4322

M18-39

4322

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4343

Males

3969

M18-39

3969

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4167

Males

3817

M18-39

3817

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3531

Males

3272

M18-39

3272

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3487

Males

3212

M18-39

3212

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4333

Males

3849

M18-39

3849

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4294

Males

3764

M18-39

3764

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5589

Males

4643

M18-39

4643

Passing Analysis

Category:
Athletes Passed
831
Passed By
1751
Net Change
-920
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3481
5K → 10K53610-557#3481#4038
10K → 15K65238-173#4038#4211
15K → 20K52200-148#4211#4359
20K → Half657-51#4359#4410
Half → 25K88109-21#4410#4431
25K → 30K75238-163#4431#4594
30K → 20M6364-1#4594#4595
20M → 21M6555+10#4595#4585
21M → 35K5422+32#4585#4553
35K → 23M12229+93#4553#4460
23M → 24M8815+73#4460#4387
24M → 40K4239+3#4387#4384
40K → 25.2M3215+17#4384#4367
25.2M → Finish2660-34#4367#4401
TOTALS8311751-920
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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