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BOSTON MARATHON 2025

Krzysztof Zmuda

Bib: 11896•M

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 26%
Gender (Male)
#0 / 16105
Top 38%
Masters (Masters Men)
#0 / 10463
Top 25%
Division (M45-49)
#0 / 2386
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:48
Rank: #10734
Start → 5K
22:48 | 7:20/mi
10K· 6.21 mi
45:21
Rank: #10321 (+413)
5K → 10K
22:33 | 7:15/mi
15K· 9.32 mi
1:07:35
Rank: #9750 (+571)
10K → 15K
22:14 | 7:09/mi
20K· 12.43 mi
1:29:58
Rank: #9333 (+417)
15K → 20K
22:23 | 7:12/mi
Half· 13.11 mi
1:34:50
Rank: #9288 (+45)
20K → Half
4:52 | 7:08/mi
25K· 15.53 mi
1:52:10
Rank: #8857 (+431)
Half → 25K
17:20 | 7:09/mi
30K· 18.64 mi
2:14:46
Rank: #8247 (+610)
25K → 30K
22:36 | 7:16/mi
20M
2:24:45
Rank: #8037 (+210)
30K → 20M
9:59 | 7:21/mi
21M
2:32:24
Rank: #7802 (+235)
20M → 21M
7:39 | 7:39/mi
35K· 21.75 mi
2:37:53
Rank: #7747 (+55)
21M → 35K
5:29 | 7:20/mi
23M
2:47:09
Rank: #7588 (+159)
35K → 23M
9:16 | 7:24/mi
24M
2:54:30
Rank: #7496 (+92)
23M → 24M
7:21 | 7:21/mi
40K· 24.85 mi
3:00:51
Rank: #7394 (+102)
24M → 40K
6:21 | 7:26/mi
25.2M
3:03:35
Rank: #7344 (+50)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:10:43
Rank: #7251 (+93)
25.2M → Finish
7:08 | 7:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:50
Pace7:14 /mi
2nd Half
Distance13.11 mi
Time1:35:53
Pace7:19 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2022:487:2022:48
7:20
-
10K
6.21 mi11:12:5345:217:1822:33
7:15
-0:05
15K
9.32 mi11:35:071:07:357:1522:14
7:09
-0:06
20K
12.43 mi11:57:301:29:587:1422:23
7:12
+0:03
Half
13.11 mi12:02:221:34:507:144:52
7:08
-0:04
25K
15.53 mi12:19:421:52:107:1317:20
7:09
+0:01
30K
18.64 mi12:42:182:14:467:1422:36
7:16
+0:07
20M
20.00 mi12:52:172:24:457:149:59
7:21
+0:05
21M
21.00 mi12:59:562:32:247:157:39
7:39
+0:18
35K
21.75 mi13:05:252:37:537:165:29
7:20
-0:19
23M
23.00 mi13:14:412:47:097:169:16
7:24
+0:04
24M
24.00 mi13:22:022:54:307:167:21
7:21
-0:03
40K
24.85 mi13:28:233:00:517:176:21
7:26
+0:05
25.2M
25.20 mi13:31:073:03:357:172:44
7:56
+0:30
Finish
26.22 mi13:38:153:10:437:177:08
7:00
-0:56

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

7:00 /mi

Average Pace

7:17 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:07:59

99% of race

Time at Steady Pace

2:44

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:16 /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 mi10:50:2022:487:2022:48
7:20
#10734
10K
6.21 mi11:12:5345:217:1822:33
7:15
#10321
15K
9.32 mi11:35:071:07:357:1522:14
7:09
#9750
20K
12.43 mi11:57:301:29:587:1422:23
7:12
#9333
Half
13.11 mi12:02:221:34:507:144:52
7:08
#9288
25K
15.53 mi12:19:421:52:107:1317:20
7:09
#8857
30K
18.64 mi12:42:182:14:467:1422:36
7:16
#8247
20M
20.00 mi12:52:172:24:457:149:59
7:21
#8037
21M
21.00 mi12:59:562:32:247:157:39
7:39
#7802
35K
21.75 mi13:05:252:37:537:165:29
7:20
#7747
23M
23.00 mi13:14:412:47:097:169:16
7:24
#7588
24M
24.00 mi13:22:022:54:307:167:21
7:21
#7496
40K
24.85 mi13:28:233:00:517:176:21
7:26
#7394
25.2M
25.20 mi13:31:073:03:357:172:44
7:56
#7344
Finish
26.22 mi13:38:153:10:437:177:08
7:00
#7251
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10734855085508731(Top 31%)7387(Top 46%)7387(Top 310%)
10K6.21 mi3.10 mi10321+4138327+2238327+2239968(Top 35%)8118(Top 50%)8118(Top 340%)
15K9.32 mi3.11 mi9750+5718007+3208007+3208731(Top 31%)7387(Top 46%)7387(Top 310%)
20K12.43 mi3.11 mi9333+4177744+2637744+2638232(Top 29%)7004(Top 43%)7004(Top 294%)
Half13.11 mi0.68 mi9288+457719+257719+258474(Top 30%)7157(Top 44%)7157(Top 300%)
25K15.53 mi2.42 mi8857+4317447+2727447+2727253(Top 26%)6287(Top 39%)6287(Top 263%)
30K18.64 mi3.11 mi8247+6107025+4227025+4226307(Top 22%)5526(Top 34%)5526(Top 232%)
20M20.00 mi1.36 mi8037+2106856+1696856+1696057(Top 21%)5238(Top 33%)5238(Top 220%)
21M21.00 mi1.00 mi7802+2356687+1696687+1695380(Top 19%)4650(Top 29%)4650(Top 195%)
35K21.75 mi0.75 mi7747+556625+626625+627371(Top 26%)5905(Top 37%)5905(Top 247%)
23M23.00 mi1.25 mi7588+1596475+1506475+1506044(Top 21%)4989(Top 31%)4989(Top 209%)
24M24.00 mi1.00 mi7496+926383+926383+926692(Top 24%)5339(Top 33%)5339(Top 224%)
40K24.85 mi0.85 mi7394+1026291+926291+926341(Top 22%)5050(Top 31%)5050(Top 212%)
25.2M25.20 mi0.35 mi7344+506248+436248+435528(Top 19%)4446(Top 28%)4446(Top 186%)
Finish26.22 mi1.02 mi7251+936161+876161+875707(Top 20%)4544(Top 28%)4544(Top 190%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21stories
+97ft-345ft

Overall

8731

Males

7387

M45-49

7387

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9968

Males

8118

M45-49

8118

10K→15K

6.2 - 9.3 mi

Top 31%
×3stories
+67ft-78ft

Overall

8731

Males

7387

M45-49

7387

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

8232

Males

7004

M45-49

7004

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8474

Males

7157

M45-49

7157

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

7253

Males

6287

M45-49

6287

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

6307

Males

5526

M45-49

5526

30K→20M

18.6 - 20.0 mi

Top 21%
×5stories
+64ft-50ft

Overall

6057

Males

5238

M45-49

5238

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5380

Males

4650

M45-49

4650

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

7371

Males

5905

M45-49

5905

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

6044

Males

4989

M45-49

4989

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6692

Males

5339

M45-49

5339

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

6341

Males

5050

M45-49

5050

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5528

Males

4446

M45-49

4446

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5707

Males

4544

M45-49

4544

Passing Analysis

Category:
Athletes Passed
3775*
Passed By
292
Net Change
+3483
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10734
5K → 10K50895+413#10734#10321
10K → 15K586*15+571#10321#9750
15K → 20K43720+417#9750#9333
20K → Half538+45#9333#9288
Half → 25K4387+431#9288#8857
25K → 30K6166+610#8857#8247
30K → 20M22212+210#8247#8037
20M → 21M2394+235#8037#7802
21M → 35K8429+55#7802#7747
35K → 23M18122+159#7747#7588
23M → 24M12129+92#7588#7496
24M → 40K12422+102#7496#7394
40K → 25.2M566+50#7394#7344
25.2M → Finish11017+93#7344#7251
TOTALS3775*292+3483

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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