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BOSTON MARATHON 2023

Luis Fernández Alfaro

Bib: 4778•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 13%
Division (M18-39)
#0 / 5285
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:00
Rank: #4219
Start → 5K
21:00 | 6:46/mi
10K· 6.21 mi
41:31
Rank: #3777 (+442)
5K → 10K
20:31 | 6:36/mi
15K· 9.32 mi
1:01:58
Rank: #3534 (+243)
10K → 15K
20:27 | 6:35/mi
20K· 12.43 mi
1:22:28
Rank: #3339 (+195)
15K → 20K
20:30 | 6:36/mi
Half· 13.11 mi
1:26:51
Rank: #3266 (+73)
20K → Half
4:23 | 6:25/mi
25K· 15.53 mi
1:42:44
Rank: #3082 (+184)
Half → 25K
15:53 | 6:33/mi
30K· 18.64 mi
2:03:25
Rank: #2858 (+224)
25K → 30K
20:41 | 6:39/mi
20M
2:12:24
Rank: #2751 (+107)
30K → 20M
8:59 | 6:37/mi
21M
2:19:14
Rank: #2632 (+119)
20M → 21M
6:50 | 6:50/mi
35K· 21.75 mi
2:23:57
Rank: #2565 (+67)
21M → 35K
4:43 | 6:18/mi
23M
2:31:59
Rank: #2428 (+137)
35K → 23M
8:02 | 6:25/mi
24M
2:38:09
Rank: #2339 (+89)
23M → 24M
6:10 | 6:10/mi
40K· 24.85 mi
2:43:20
Rank: #2226 (+113)
24M → 40K
5:11 | 6:04/mi
25.2M
2:45:36
Rank: #2180 (+46)
40K → 25.2M
2:16 | 6:34/mi
Finish· 26.22 mi
2:51:31
Rank: #2020 (+160)
25.2M → Finish
5:55 | 5:48/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:26:51
Pace6:37 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:24:40
Pace6:28 /mi
📊Negative Split: 2.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5721:006:4621:00
6:46
-
10K
6.21 mi10:43:2841:316:4120:31
6:36
-0:10
15K
9.32 mi11:03:551:01:586:3920:27
6:35
-0:01
20K
12.43 mi11:24:251:22:286:3820:30
6:36
+0:01
Half
13.11 mi11:28:481:26:516:374:23
6:25
-0:11
25K
15.53 mi11:44:411:42:446:3715:53
6:33
+0:08
30K
18.64 mi12:05:222:03:256:3720:41
6:39
+0:06
20M
20.00 mi12:14:212:12:246:378:59
6:37
-0:02
21M
21.00 mi12:21:112:19:146:386:50
6:50
+0:13
35K
21.75 mi12:25:542:23:576:374:43
6:18
-0:32
23M
23.00 mi12:33:562:31:596:368:02
6:25
+0:07
24M
24.00 mi12:40:062:38:096:356:10
6:10
-0:15
40K
24.85 mi12:45:172:43:206:345:11
6:04
-0:06
25.2M
25.20 mi12:47:332:45:366:342:16
6:34
+0:30
Finish
26.22 mi12:53:282:51:316:335:55
5:48
-0:46

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

5:48 /mi

Average Pace

6:33 /mi

Slowest Pace

6:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

21:59

13% of race

Time at Steady Pace

2:29:32

87% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:32 /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 mi10:22:5721:006:4621:00
6:46
#4219
10K
6.21 mi10:43:2841:316:4120:31
6:36
#3777
15K
9.32 mi11:03:551:01:586:3920:27
6:35
#3534
20K
12.43 mi11:24:251:22:286:3820:30
6:36
#3339
Half
13.11 mi11:28:481:26:516:374:23
6:25
#3266
25K
15.53 mi11:44:411:42:446:3715:53
6:33
#3082
30K
18.64 mi12:05:222:03:256:3720:41
6:39
#2858
20M
20.00 mi12:14:212:12:246:378:59
6:37
#2751
21M
21.00 mi12:21:112:19:146:386:50
6:50
#2632
35K
21.75 mi12:25:542:23:576:374:43
6:18
#2565
23M
23.00 mi12:33:562:31:596:368:02
6:25
#2428
24M
24.00 mi12:40:062:38:096:356:10
6:10
#2339
40K
24.85 mi12:45:172:43:206:345:11
6:04
#2226
25.2M
25.20 mi12:47:332:45:366:342:16
6:34
#2180
Finish
26.22 mi12:53:282:51:316:335:55
5:48
#2020
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4219394839483139(Top 12%)2988(Top 20%)2988(Top 57%)
10K6.21 mi3.10 mi3777+4423557+3913557+3913505(Top 13%)3318(Top 22%)3318(Top 63%)
15K9.32 mi3.11 mi3534+2433342+2153342+2153139(Top 12%)2988(Top 20%)2988(Top 57%)
20K12.43 mi3.11 mi3339+1953171+1713171+1712812(Top 11%)2686(Top 18%)2686(Top 51%)
Half13.11 mi0.68 mi3266+733106+653106+652328(Top 9%)2233(Top 15%)2233(Top 42%)
25K15.53 mi2.42 mi3082+1842939+1672939+1672414(Top 9%)2310(Top 15%)2310(Top 44%)
30K18.64 mi3.11 mi2858+2242733+2062733+2062201(Top 8%)2101(Top 14%)2101(Top 40%)
20M20.00 mi1.36 mi2751+1072627+1062627+1061905(Top 7%)1817(Top 12%)1817(Top 34%)
21M21.00 mi1.00 mi2632+1192517+1102517+1101526(Top 6%)1455(Top 10%)1455(Top 28%)
35K21.75 mi0.75 mi2565+672452+652452+651603(Top 6%)1523(Top 10%)1523(Top 29%)
23M23.00 mi1.25 mi2428+1372324+1282324+1281166(Top 4%)1102(Top 7%)1102(Top 21%)
24M24.00 mi1.00 mi2339+892238+862238+86933(Top 4%)884(Top 6%)884(Top 17%)
40K24.85 mi0.85 mi2226+1132136+1022136+102438(Top 2%)411(Top 3%)411(Top 8%)
25.2M25.20 mi0.35 mi2180+462092+442092+44643(Top 2%)610(Top 4%)610(Top 12%)
Finish26.22 mi1.02 mi2020+1601936+1561936+156398(Top 1%)379(Top 2%)379(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3139

Males

2988

M18-39

2988

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3505

Males

3318

M18-39

3318

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3139

Males

2988

M18-39

2988

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

2812

Males

2686

M18-39

2686

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2328

Males

2233

M18-39

2233

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2414

Males

2310

M18-39

2310

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2201

Males

2101

M18-39

2101

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1905

Males

1817

M18-39

1817

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1526

Males

1455

M18-39

1455

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1603

Males

1523

M18-39

1523

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1166

Males

1102

M18-39

1102

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

933

Males

884

M18-39

884

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

438

Males

411

M18-39

411

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

643

Males

610

M18-39

610

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

398

Males

379

M18-39

379

Passing Analysis

Category:
Athletes Passed
2314
Passed By
115
Net Change
+2199
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4219
5K → 10K50765+442#4219#3777
10K → 15K26825+243#3777#3534
15K → 20K20813+195#3534#3339
20K → Half741+73#3339#3266
Half → 25K1906+184#3266#3082
25K → 30K2273+224#3082#2858
30K → 20M1070+107#2858#2751
20M → 21M1190+119#2751#2632
21M → 35K681+67#2632#2565
35K → 23M1370+137#2565#2428
23M → 24M890+89#2428#2339
24M → 40K1141+113#2339#2226
40K → 25.2M460+46#2226#2180
25.2M → Finish1600+160#2180#2020
TOTALS2314115+2199
📊

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