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BOSTON MARATHON 2023

Matías Barrios Kalechsztajn

Bib: 4638•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 11%
Gender (Male)
#0 / 15176
Top 18%
Division (M18-39)
#0 / 5285
Top 40%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:35
Rank: #3051
Start → 5K
20:35 | 6:38/mi
10K· 6.21 mi
40:48
Rank: #2899 (+152)
5K → 10K
20:13 | 6:30/mi
15K· 9.32 mi
1:00:45
Rank: #2635 (+264)
10K → 15K
19:57 | 6:25/mi
20K· 12.43 mi
1:20:48
Rank: #2460 (+175)
15K → 20K
20:03 | 6:27/mi
Half· 13.11 mi
1:25:16
Rank: #2480 (-20)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:41:09
Rank: #2480
Half → 25K
15:53 | 6:33/mi
30K· 18.64 mi
2:02:15
Rank: #2515 (-35)
25K → 30K
21:06 | 6:47/mi
20M
2:11:34
Rank: #2533 (-18)
30K → 20M
9:19 | 6:51/mi
21M
2:19:07
Rank: #2599 (-66)
20M → 21M
7:33 | 7:33/mi
35K· 21.75 mi
2:24:15
Rank: #2638 (-39)
21M → 35K
5:08 | 6:52/mi
23M
2:33:17
Rank: #2756 (-118)
35K → 23M
9:02 | 7:13/mi
24M
2:40:20
Rank: #2846 (-90)
23M → 24M
7:03 | 7:03/mi
40K· 24.85 mi
2:46:28
Rank: #2905 (-59)
24M → 40K
6:08 | 7:10/mi
25.2M
2:49:07
Rank: #2921 (-16)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
2:56:04
Rank: #2938 (-17)
25.2M → Finish
6:57 | 6:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:16
Pace6:30 /mi
2nd Half
Distance13.11 mi
Time1:30:48
Pace6:56 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3520:356:3820:35
6:38
-
10K
6.21 mi10:42:4840:486:3420:13
6:30
-0:08
15K
9.32 mi11:02:451:00:456:3119:57
6:25
-0:05
20K
12.43 mi11:22:481:20:486:3020:03
6:27
+0:02
Half
13.11 mi11:27:161:25:166:304:28
6:33
+0:06
25K
15.53 mi11:43:091:41:096:3115:53
6:33
0:00
30K
18.64 mi12:04:152:02:156:3321:06
6:47
+0:14
20M
20.00 mi12:13:342:11:346:359:19
6:51
+0:04
21M
21.00 mi12:21:072:19:076:377:33
7:33
+0:42
35K
21.75 mi12:26:152:24:156:385:08
6:52
-0:41
23M
23.00 mi12:35:172:33:176:409:02
7:13
+0:21
24M
24.00 mi12:42:202:40:206:417:03
7:03
-0:10
40K
24.85 mi12:48:282:46:286:426:08
7:10
+0:07
25.2M
25.20 mi12:51:072:49:076:432:39
7:41
+0:31
Finish
26.22 mi12:58:042:56:046:436:57
6:49
-0:52

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

6:25 /mi

Average Pace

6:43 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:30:42

86% of race

Time at Steady Pace

22:43

13% of race

Time at Slower Pace

2:39

2% of race

Average Pace: 6:43 /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 mi10:22:3520:356:3820:35
6:38
#3051
10K
6.21 mi10:42:4840:486:3420:13
6:30
#2899
15K
9.32 mi11:02:451:00:456:3119:57
6:25
#2635
20K
12.43 mi11:22:481:20:486:3020:03
6:27
#2460
Half
13.11 mi11:27:161:25:166:304:28
6:33
#2480
25K
15.53 mi11:43:091:41:096:3115:53
6:33
#2480
30K
18.64 mi12:04:152:02:156:3321:06
6:47
#2515
20M
20.00 mi12:13:342:11:346:359:19
6:51
#2533
21M
21.00 mi12:21:072:19:076:377:33
7:33
#2599
35K
21.75 mi12:26:152:24:156:385:08
6:52
#2638
23M
23.00 mi12:35:172:33:176:409:02
7:13
#2756
24M
24.00 mi12:42:202:40:206:417:03
7:03
#2846
40K
24.85 mi12:48:282:46:286:426:08
7:10
#2905
25.2M
25.20 mi12:51:072:49:076:432:39
7:41
#2921
Finish
26.22 mi12:58:042:56:046:436:57
6:49
#2938
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3051289128912219(Top 8%)2128(Top 14%)2128(Top 40%)
10K6.21 mi3.10 mi2899+1522765+1262765+1262832(Top 11%)2706(Top 18%)2706(Top 51%)
15K9.32 mi3.11 mi2635+2642516+2492516+2492219(Top 8%)2128(Top 14%)2128(Top 40%)
20K12.43 mi3.11 mi2460+1752355+1612355+1612065(Top 8%)1984(Top 13%)1984(Top 38%)
Half13.11 mi0.68 mi2480-202375-202375-203065(Top 12%)2930(Top 19%)2930(Top 55%)
25K15.53 mi2.42 mi24802376-12376-12434(Top 9%)2330(Top 15%)2330(Top 44%)
30K18.64 mi3.11 mi2515-352406-302406-302919(Top 11%)2764(Top 18%)2764(Top 52%)
20M20.00 mi1.36 mi2533-182422-162422-163141(Top 12%)2947(Top 19%)2947(Top 56%)
21M21.00 mi1.00 mi2599-662487-652487-654789(Top 18%)4316(Top 28%)4316(Top 82%)
35K21.75 mi0.75 mi2638-392521-342521-344528(Top 17%)4119(Top 27%)4119(Top 78%)
23M23.00 mi1.25 mi2756-1182630-1092630-1094833(Top 18%)4332(Top 29%)4332(Top 82%)
24M24.00 mi1.00 mi2846-902706-762706-764874(Top 18%)4326(Top 29%)4326(Top 82%)
40K24.85 mi0.85 mi2905-592761-552761-554705(Top 18%)4132(Top 27%)4132(Top 78%)
25.2M25.20 mi0.35 mi2921-162772-112772-114710(Top 18%)4063(Top 27%)4063(Top 77%)
Finish26.22 mi1.02 mi2938-172782-102782-104165(Top 16%)3669(Top 24%)3669(Top 69%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2219

Males

2128

M18-39

2128

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2832

Males

2706

M18-39

2706

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2219

Males

2128

M18-39

2128

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2065

Males

1984

M18-39

1984

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3065

Males

2930

M18-39

2930

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2434

Males

2330

M18-39

2330

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

2919

Males

2764

M18-39

2764

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3141

Males

2947

M18-39

2947

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4789

Males

4316

M18-39

4316

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4528

Males

4119

M18-39

4119

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

4833

Males

4332

M18-39

4332

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4874

Males

4326

M18-39

4326

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4705

Males

4132

M18-39

4132

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4710

Males

4063

M18-39

4063

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4165

Males

3669

M18-39

3669

Passing Analysis

Category:
Athletes Passed
980
Passed By
867
Net Change
+113
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3051
5K → 10K24694+152#3051#2899
10K → 15K2739+264#2899#2635
15K → 20K1838+175#2635#2460
20K → Half424-20#2460#2480
Half → 25K53530#2480#2480
25K → 30K5287-35#2480#2515
30K → 20M3048-18#2515#2533
20M → 21M1985-66#2533#2599
21M → 35K1150-39#2599#2638
35K → 23M23141-118#2638#2756
23M → 24M16106-90#2756#2846
24M → 40K2382-59#2846#2905
40K → 25.2M1531-16#2905#2921
25.2M → Finish3249-17#2921#2938
TOTALS980867+113
📊

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