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BOSTON MARATHON 2023

Alfredo San Narciso Sosa

Bib: 18685•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 45%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 49%
Division (M60-64)
#0 / 1110
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:03
Rank: #14429
Start → 5K
25:03 | 8:04/mi
10K· 6.21 mi
49:36
Rank: #14260 (+169)
5K → 10K
24:33 | 7:54/mi
15K· 9.32 mi
1:13:56
Rank: #13832 (+428)
10K → 15K
24:20 | 7:50/mi
20K· 12.43 mi
1:38:23
Rank: #13448 (+384)
15K → 20K
24:27 | 7:52/mi
Half· 13.11 mi
1:43:33
Rank: #13306 (+142)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
2:02:35
Rank: #12968 (+338)
Half → 25K
19:02 | 7:51/mi
30K· 18.64 mi
2:27:32
Rank: #12584 (+384)
25K → 30K
24:57 | 8:02/mi
20M
2:38:29
Rank: #12413 (+171)
30K → 20M
10:57 | 8:03/mi
21M
2:47:06
Rank: #12311 (+102)
20M → 21M
8:37 | 8:37/mi
35K· 21.75 mi
2:53:05
Rank: #12299 (+12)
21M → 35K
5:59 | 8:00/mi
23M
3:03:17
Rank: #12210 (+89)
35K → 23M
10:12 | 8:09/mi
24M
3:11:06
Rank: #12094 (+116)
23M → 24M
7:49 | 7:49/mi
40K· 24.85 mi
3:17:57
Rank: #11999 (+95)
24M → 40K
6:51 | 8:01/mi
25.2M
3:20:57
Rank: #11978 (+21)
40K → 25.2M
3:00 | 8:42/mi
Finish· 26.22 mi
3:28:59
Rank: #11949 (+29)
25.2M → Finish
8:02 | 7:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:33
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:45:26
Pace8:03 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0925:038:0425:03
8:04
-
10K
6.21 mi11:40:4249:367:5924:33
7:54
-0:10
15K
9.32 mi12:05:021:13:567:5624:20
7:50
-0:04
20K
12.43 mi12:29:291:38:237:5524:27
7:52
+0:02
Half
13.11 mi12:34:391:43:337:545:10
7:34
-0:18
25K
15.53 mi12:53:412:02:357:5319:02
7:51
+0:17
30K
18.64 mi13:18:382:27:327:5524:57
8:02
+0:11
20M
20.00 mi13:29:352:38:297:5510:57
8:03
+0:01
21M
21.00 mi13:38:122:47:067:578:37
8:37
+0:34
35K
21.75 mi13:44:112:53:057:585:59
8:00
-0:37
23M
23.00 mi13:54:233:03:177:5810:12
8:09
+0:09
24M
24.00 mi14:02:123:11:067:587:49
7:49
-0:20
40K
24.85 mi14:09:033:17:577:586:51
8:01
+0:12
25.2M
25.20 mi14:12:033:20:577:583:00
8:42
+0:41
Finish
26.22 mi14:20:053:28:597:598:02
7:53
-0:49

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

7:34 /mi

Average Pace

7:59 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:22

94% of race

Time at Steady Pace

11:37

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:58 /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 mi11:16:0925:038:0425:03
8:04
#14429
10K
6.21 mi11:40:4249:367:5924:33
7:54
#14260
15K
9.32 mi12:05:021:13:567:5624:20
7:50
#13832
20K
12.43 mi12:29:291:38:237:5524:27
7:52
#13448
Half
13.11 mi12:34:391:43:337:545:10
7:34
#13306
25K
15.53 mi12:53:412:02:357:5319:02
7:51
#12968
30K
18.64 mi13:18:382:27:327:5524:57
8:02
#12584
20M
20.00 mi13:29:352:38:297:5510:57
8:03
#12413
21M
21.00 mi13:38:122:47:067:578:37
8:37
#12311
35K
21.75 mi13:44:112:53:057:585:59
8:00
#12299
23M
23.00 mi13:54:233:03:177:5810:12
8:09
#12210
24M
24.00 mi14:02:123:11:067:587:49
7:49
#12094
40K
24.85 mi14:09:033:17:577:586:51
8:01
#11999
25.2M
25.20 mi14:12:033:20:577:583:00
8:42
#11978
Finish
26.22 mi14:20:053:28:597:598:02
7:53
#11949
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi14429101191011912971(Top 49%)9496(Top 63%)9496(Top 855%)
10K6.21 mi3.10 mi14260+16910036+8310036+8313990(Top 53%)9932(Top 65%)9932(Top 895%)
15K9.32 mi3.11 mi13832+4289854+1829854+18212971(Top 49%)9496(Top 63%)9496(Top 855%)
20K12.43 mi3.11 mi13448+3849680+1749680+17412317(Top 46%)9153(Top 60%)9153(Top 825%)
Half13.11 mi0.68 mi13306+1429624+569624+5610792(Top 41%)8518(Top 56%)8518(Top 767%)
25K15.53 mi2.42 mi12968+3389466+1589466+15811503(Top 43%)8718(Top 57%)8718(Top 785%)
30K18.64 mi3.11 mi12584+3849255+2119255+21111142(Top 42%)8420(Top 55%)8420(Top 759%)
20M20.00 mi1.36 mi12413+1719177+789177+7810698(Top 40%)8109(Top 53%)8109(Top 731%)
21M21.00 mi1.00 mi12311+1029115+629115+6211137(Top 42%)8186(Top 54%)8186(Top 737%)
35K21.75 mi0.75 mi12299+129089+269089+2612079(Top 45%)8588(Top 57%)8588(Top 774%)
23M23.00 mi1.25 mi12210+899021+689021+6810791(Top 41%)7868(Top 52%)7868(Top 709%)
24M24.00 mi1.00 mi12094+1168943+788943+789912(Top 37%)7358(Top 48%)7358(Top 663%)
40K24.85 mi0.85 mi11999+958883+608883+6010122(Top 38%)7403(Top 49%)7403(Top 667%)
25.2M25.20 mi0.35 mi11978+218870+138870+1310717(Top 40%)7674(Top 51%)7674(Top 691%)
Finish26.22 mi1.02 mi11949+298839+318839+3111267(Top 42%)7924(Top 52%)7924(Top 714%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21stories
+97ft-345ft

Overall

12971

Males

9496

M60-64

9496

5K→10K

3.1 - 6.2 mi

Top 53%
×5stories
+79ft-138ft

Overall

13990

Males

9932

M60-64

9932

10K→15K

6.2 - 9.3 mi

Top 49%
×3stories
+67ft-78ft

Overall

12971

Males

9496

M60-64

9496

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12317

Males

9153

M60-64

9153

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10792

Males

8518

M60-64

8518

Half→25K

13.1 - 15.5 mi

Top 43%
×4stories
+66ft-88ft

Overall

11503

Males

8718

M60-64

8718

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

11142

Males

8420

M60-64

8420

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

10698

Males

8109

M60-64

8109

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11137

Males

8186

M60-64

8186

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

12079

Males

8588

M60-64

8588

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

10791

Males

7868

M60-64

7868

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

9912

Males

7358

M60-64

7358

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10122

Males

7403

M60-64

7403

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10717

Males

7674

M60-64

7674

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2stories
+22ft-21ft

Overall

11267

Males

7924

M60-64

7924

Passing Analysis

Category:
Athletes Passed
3080
Passed By
600
Net Change
+2480
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14429
5K → 10K386217+169#14429#14260
10K → 15K47446+428#14260#13832
15K → 20K41127+384#13832#13448
20K → Half1442+142#13448#13306
Half → 25K36123+338#13306#12968
25K → 30K40824+384#12968#12584
30K → 20M19625+171#12584#12413
20M → 21M14442+102#12413#12311
21M → 35K5240+12#12311#12299
35K → 23M13748+89#12299#12210
23M → 24M13115+116#12210#12094
24M → 40K11722+95#12094#11999
40K → 25.2M3918+21#11999#11978
25.2M → Finish8051+29#11978#11949
TOTALS3080600+2480
📊

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