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BOSTON MARATHON 2023

Javier Fernandez-Concha

Bib: 3253•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Division (M18-39)
#0 / 5285
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:40
Rank: #3232
Start → 5K
20:40 | 6:39/mi
10K· 6.21 mi
40:56
Rank: #3064 (+168)
5K → 10K
20:16 | 6:31/mi
15K· 9.32 mi
1:01:22
Rank: #3072 (-8)
10K → 15K
20:26 | 6:35/mi
20K· 12.43 mi
1:21:53
Rank: #3009 (+63)
15K → 20K
20:31 | 6:36/mi
Half· 13.11 mi
1:26:19
Rank: #2981 (+28)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:42:07
Rank: #2817 (+164)
Half → 25K
15:48 | 6:31/mi
30K· 18.64 mi
2:02:42
Rank: #2650 (+167)
25K → 30K
20:35 | 6:38/mi
20M
2:11:36
Rank: #2538 (+112)
30K → 20M
8:54 | 6:33/mi
21M
2:18:43
Rank: #2514 (+24)
20M → 21M
7:07 | 7:07/mi
35K· 21.75 mi
2:23:28
Rank: #2466 (+48)
21M → 35K
4:45 | 6:21/mi
23M
2:32:00
Rank: #2433 (+33)
35K → 23M
8:32 | 6:49/mi
24M
2:38:33
Rank: #2409 (+24)
23M → 24M
6:33 | 6:33/mi
40K· 24.85 mi
2:44:23
Rank: #2399 (+10)
24M → 40K
5:50 | 6:49/mi
25.2M
2:46:57
Rank: #2395 (+4)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:53:26
Rank: #2351 (+44)
25.2M → Finish
6:29 | 6:22/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:26:19
Pace6:35 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:27:07
Pace6:39 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:1920:406:3920:40
6:39
-
10K
6.21 mi10:42:3540:566:3520:16
6:31
-0:08
15K
9.32 mi11:03:011:01:226:3520:26
6:35
+0:04
20K
12.43 mi11:23:321:21:536:3520:31
6:36
+0:01
Half
13.11 mi11:27:581:26:196:354:26
6:30
-0:06
25K
15.53 mi11:43:461:42:076:3415:48
6:31
+0:01
30K
18.64 mi12:04:212:02:426:3520:35
6:38
+0:07
20M
20.00 mi12:13:152:11:366:358:54
6:33
-0:05
21M
21.00 mi12:20:222:18:436:367:07
7:07
+0:34
35K
21.75 mi12:25:072:23:286:364:45
6:21
-0:46
23M
23.00 mi12:33:392:32:006:378:32
6:49
+0:28
24M
24.00 mi12:40:122:38:336:366:33
6:33
-0:16
40K
24.85 mi12:46:022:44:236:375:50
6:49
+0:16
25.2M
25.20 mi12:48:362:46:576:382:34
7:27
+0:38
Finish
26.22 mi12:55:052:53:266:376:29
6:22
-1:05

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

6:21 /mi

Average Pace

6:37 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:45

94% of race

Time at Steady Pace

9:41

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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 mi10:22:1920:406:3920:40
6:39
#3232
10K
6.21 mi10:42:3540:566:3520:16
6:31
#3064
15K
9.32 mi11:03:011:01:226:3520:26
6:35
#3072
20K
12.43 mi11:23:321:21:536:3520:31
6:36
#3009
Half
13.11 mi11:27:581:26:196:354:26
6:30
#2981
25K
15.53 mi11:43:461:42:076:3415:48
6:31
#2817
30K
18.64 mi12:04:212:02:426:3520:35
6:38
#2650
20M
20.00 mi12:13:152:11:366:358:54
6:33
#2538
21M
21.00 mi12:20:222:18:436:367:07
7:07
#2514
35K
21.75 mi12:25:072:23:286:364:45
6:21
#2466
23M
23.00 mi12:33:392:32:006:378:32
6:49
#2433
24M
24.00 mi12:40:122:38:336:366:33
6:33
#2409
40K
24.85 mi12:46:022:44:236:375:50
6:49
#2399
25.2M
25.20 mi12:48:362:46:576:382:34
7:27
#2395
Finish
26.22 mi12:55:052:53:266:376:29
6:22
#2351
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3232305130513091(Top 12%)2945(Top 19%)2945(Top 56%)
10K6.21 mi3.10 mi3064+1682917+1342917+1342929(Top 11%)2799(Top 18%)2799(Top 53%)
15K9.32 mi3.11 mi3072-82927-102927-103091(Top 12%)2945(Top 19%)2945(Top 56%)
20K12.43 mi3.11 mi3009+632871+562871+562858(Top 11%)2726(Top 18%)2726(Top 52%)
Half13.11 mi0.68 mi2981+282847+242847+242741(Top 10%)2625(Top 17%)2625(Top 50%)
25K15.53 mi2.42 mi2817+1642693+1542693+1542246(Top 8%)2154(Top 14%)2154(Top 41%)
30K18.64 mi3.11 mi2650+1672530+1632530+1632074(Top 8%)1981(Top 13%)1981(Top 37%)
20M20.00 mi1.36 mi2538+1122427+1032427+1031664(Top 6%)1588(Top 10%)1588(Top 30%)
21M21.00 mi1.00 mi2514+242407+202407+202671(Top 10%)2507(Top 17%)2507(Top 47%)
35K21.75 mi0.75 mi2466+482362+452362+451772(Top 7%)1685(Top 11%)1685(Top 32%)
23M23.00 mi1.25 mi2433+332329+332329+332723(Top 10%)2549(Top 17%)2549(Top 48%)
24M24.00 mi1.00 mi2409+242305+242305+242297(Top 9%)2148(Top 14%)2148(Top 41%)
40K24.85 mi0.85 mi2399+102294+112294+112911(Top 11%)2678(Top 18%)2678(Top 51%)
25.2M25.20 mi0.35 mi2395+42290+42290+43551(Top 13%)3179(Top 21%)3179(Top 60%)
Finish26.22 mi1.02 mi2351+442249+412249+411867(Top 7%)1745(Top 11%)1745(Top 33%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3091

Males

2945

M18-39

2945

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2929

Males

2799

M18-39

2799

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3091

Males

2945

M18-39

2945

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

2858

Males

2726

M18-39

2726

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2741

Males

2625

M18-39

2625

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2246

Males

2154

M18-39

2154

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2074

Males

1981

M18-39

1981

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1664

Males

1588

M18-39

1588

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2671

Males

2507

M18-39

2507

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1772

Males

1685

M18-39

1685

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2723

Males

2549

M18-39

2549

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2297

Males

2148

M18-39

2148

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2911

Males

2678

M18-39

2678

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3551

Males

3179

M18-39

3179

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1867

Males

1745

M18-39

1745

Passing Analysis

Category:
Athletes Passed
1244
Passed By
363
Net Change
+881
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3232
5K → 10K25890+168#3232#3064
10K → 15K8795-8#3064#3072
15K → 20K11754+63#3072#3009
20K → Half368+28#3009#2981
Half → 25K1684+164#2981#2817
25K → 30K17710+167#2817#2650
30K → 20M1153+112#2650#2538
20M → 21M5127+24#2538#2514
21M → 35K513+48#2514#2466
35K → 23M4714+33#2466#2433
23M → 24M3915+24#2433#2409
24M → 40K2717+10#2409#2399
40K → 25.2M1713+4#2399#2395
25.2M → Finish5410+44#2395#2351
TOTALS1244363+881
📊

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