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BOSTON MARATHON 2025

Brendan Krych

Bib: 1050•M

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0:00
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Overall
#0 / 28404
Top 13%
Gender (Male)
#0 / 16105
Top 22%
Division (M18-39)
#0 / 5642
Top 46%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:17
Rank: #6684
Start → 5K
21:17 | 6:51/mi
10K· 6.21 mi
42:21
Rank: #6442 (+242)
5K → 10K
21:04 | 6:47/mi
15K· 9.32 mi
1:03:13
Rank: #6018 (+424)
10K → 15K
20:52 | 6:43/mi
20K· 12.43 mi
1:25:29
Rank: #6660 (-642)
15K → 20K
22:16 | 7:10/mi
Half· 13.11 mi
1:30:02
Rank: #6567 (+93)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:46:17
Rank: #6087 (+480)
Half → 25K
16:15 | 6:42/mi
30K· 18.64 mi
2:07:36
Rank: #5552 (+535)
25K → 30K
21:19 | 6:52/mi
20M
2:16:48
Rank: #5265 (+287)
30K → 20M
9:12 | 6:46/mi
21M
2:23:49
Rank: #5006 (+259)
20M → 21M
7:01 | 7:01/mi
35K· 21.75 mi
2:28:41
Rank: #4857 (+149)
21M → 35K
4:52 | 6:30/mi
23M
2:37:04
Rank: #4623 (+234)
35K → 23M
8:23 | 6:42/mi
24M
2:43:26
Rank: #4393 (+230)
23M → 24M
6:22 | 6:22/mi
40K· 24.85 mi
2:48:50
Rank: #4159 (+234)
24M → 40K
5:24 | 6:19/mi
25.2M
2:51:10
Rank: #4066 (+93)
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:57:10
Rank: #3785 (+281)
25.2M → Finish
6:00 | 5:53/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:30:02
Pace6:52 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:27:08
Pace6:39 /mi
📊Negative Split: 3.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:4621:176:5121:17
6:51
-
10K
6.21 mi10:46:5042:216:4921:04
6:47
-0:04
15K
9.32 mi11:07:421:03:136:4720:52
6:43
-0:04
20K
12.43 mi11:29:581:25:296:5322:16
7:10
+0:27
Half
13.11 mi11:34:311:30:026:524:33
6:40
-0:30
25K
15.53 mi11:50:461:46:176:5116:15
6:42
+0:02
30K
18.64 mi12:12:052:07:366:5121:19
6:52
+0:10
20M
20.00 mi12:21:172:16:486:509:12
6:46
-0:06
21M
21.00 mi12:28:182:23:496:517:01
7:01
+0:15
35K
21.75 mi12:33:102:28:416:504:52
6:30
-0:31
23M
23.00 mi12:41:332:37:046:508:23
6:42
+0:12
24M
24.00 mi12:47:552:43:266:496:22
6:22
-0:20
40K
24.85 mi12:53:192:48:506:485:24
6:19
-0:03
25.2M
25.20 mi12:55:392:51:106:482:20
6:46
+0:27
Finish
26.22 mi13:01:392:57:106:466:00
5:53
-0:53

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

5:53 /mi

Average Pace

6:46 /mi

Slowest Pace

7:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

22:38

13% of race

Time at Steady Pace

1:43:56

59% of race

Time at Slower Pace

50:36

29% of race

Average Pace: 6:45 /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 mi10:25:4621:176:5121:17
6:51
#6684
10K
6.21 mi10:46:5042:216:4921:04
6:47
#6442
15K
9.32 mi11:07:421:03:136:4720:52
6:43
#6018
20K
12.43 mi11:29:581:25:296:5322:16
7:10
#6660
Half
13.11 mi11:34:311:30:026:524:33
6:40
#6567
25K
15.53 mi11:50:461:46:176:5116:15
6:42
#6087
30K
18.64 mi12:12:052:07:366:5121:19
6:52
#5552
20M
20.00 mi12:21:172:16:486:509:12
6:46
#5265
21M
21.00 mi12:28:182:23:496:517:01
7:01
#5006
35K
21.75 mi12:33:102:28:416:504:52
6:30
#4857
23M
23.00 mi12:41:332:37:046:508:23
6:42
#4623
24M
24.00 mi12:47:552:43:266:496:22
6:22
#4393
40K
24.85 mi12:53:192:48:506:485:24
6:19
#4159
25.2M
25.20 mi12:55:392:51:106:482:20
6:46
#4066
Finish
26.22 mi13:01:392:57:106:466:00
5:53
#3785
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6684605960595208(Top 18%)4814(Top 30%)4814(Top 85%)
10K6.21 mi3.10 mi6442+2425870+1895870+1896147(Top 22%)5599(Top 35%)5599(Top 99%)
15K9.32 mi3.11 mi6018+4245510+3605510+3605208(Top 18%)4814(Top 30%)4814(Top 85%)
20K12.43 mi3.11 mi6660-6426010-5006010-5007925(Top 28%)6818(Top 42%)6818(Top 121%)
Half13.11 mi0.68 mi6567+935931+795931+794929(Top 17%)4558(Top 28%)4558(Top 81%)
25K15.53 mi2.42 mi6087+4805529+4025529+4024134(Top 15%)3846(Top 24%)3846(Top 68%)
30K18.64 mi3.11 mi5552+5355079+4505079+4503814(Top 13%)3522(Top 22%)3522(Top 62%)
20M20.00 mi1.36 mi5265+2874827+2524827+2522773(Top 10%)2598(Top 16%)2598(Top 46%)
21M21.00 mi1.00 mi5006+2594606+2214606+2212324(Top 8%)2170(Top 13%)2170(Top 38%)
35K21.75 mi0.75 mi4857+1494477+1294477+1292477(Top 9%)2310(Top 14%)2310(Top 41%)
23M23.00 mi1.25 mi4623+2344261+2164261+2162238(Top 8%)2089(Top 13%)2089(Top 37%)
24M24.00 mi1.00 mi4393+2304055+2064055+2061543(Top 5%)1442(Top 9%)1442(Top 26%)
40K24.85 mi0.85 mi4159+2343842+2133842+2131020(Top 4%)957(Top 6%)957(Top 17%)
25.2M25.20 mi0.35 mi4066+933759+833759+83920(Top 3%)853(Top 5%)853(Top 15%)
Finish26.22 mi1.02 mi3785+2813513+2463513+246669(Top 2%)630(Top 4%)630(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

5208

Males

4814

M18-39

4814

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

6147

Males

5599

M18-39

5599

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

5208

Males

4814

M18-39

4814

15K→20K

9.3 - 12.4 mi

Top 28%
×5stories
+106ft-86ft

Overall

7925

Males

6818

M18-39

6818

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4929

Males

4558

M18-39

4558

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4134

Males

3846

M18-39

3846

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3814

Males

3522

M18-39

3522

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2773

Males

2598

M18-39

2598

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2324

Males

2170

M18-39

2170

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2477

Males

2310

M18-39

2310

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2238

Males

2089

M18-39

2089

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1543

Males

1442

M18-39

1442

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1020

Males

957

M18-39

957

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

920

Males

853

M18-39

853

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

669

Males

630

M18-39

630

Passing Analysis

Category:
Athletes Passed
3702
Passed By
803
Net Change
+2899
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6684
5K → 10K32785+242#6684#6442
10K → 15K44521+424#6442#6018
15K → 20K37679-642#6018#6660
20K → Half974+93#6660#6567
Half → 25K4822+480#6567#6087
25K → 30K5449+535#6087#5552
30K → 20M2870+287#5552#5265
20M → 21M2601+259#5265#5006
21M → 35K1490+149#5006#4857
35K → 23M2362+234#4857#4623
23M → 24M2300+230#4623#4393
24M → 40K2340+234#4393#4159
40K → 25.2M930+93#4159#4066
25.2M → Finish2810+281#4066#3785
TOTALS3702803+2899
📊

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