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BOSTON MARATHON 2025

Michael Zakrajsek

Bib: 4154•M

DC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 9%
Division (M18-39)
#0 / 5642
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:26
Rank: #2162
Start → 5K
19:26 | 6:15/mi
10K· 6.21 mi
38:35
Rank: #1918 (+244)
5K → 10K
19:09 | 6:10/mi
15K· 9.32 mi
57:47
Rank: #1844 (+74)
10K → 15K
19:12 | 6:11/mi
20K· 12.43 mi
1:17:06
Rank: #1772 (+72)
15K → 20K
19:19 | 6:13/mi
Half· 13.11 mi
1:21:19
Rank: #1777 (-5)
20K → Half
4:13 | 6:11/mi
25K· 15.53 mi
1:36:32
Rank: #1760 (+17)
Half → 25K
15:13 | 6:17/mi
30K· 18.64 mi
1:56:32
Rank: #1713 (+47)
25K → 30K
20:00 | 6:26/mi
20M
2:05:33
Rank: #1727 (-14)
30K → 20M
9:01 | 6:38/mi
21M
2:12:27
Rank: #1708 (+19)
20M → 21M
6:54 | 6:54/mi
35K· 21.75 mi
2:17:09
Rank: #1681 (+27)
21M → 35K
4:42 | 6:17/mi
23M
2:25:20
Rank: #1624 (+57)
35K → 23M
8:11 | 6:32/mi
24M
2:31:43
Rank: #1595 (+29)
23M → 24M
6:23 | 6:23/mi
40K· 24.85 mi
2:37:13
Rank: #1564 (+31)
24M → 40K
5:30 | 6:26/mi
25.2M
2:39:34
Rank: #1539 (+25)
40K → 25.2M
2:21 | 6:49/mi
Finish· 26.22 mi
2:45:38
Rank: #1473 (+66)
25.2M → Finish
6:04 | 5:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:19
Pace6:12 /mi
2nd Half
Distance13.11 mi
Time1:24:19
Pace6:26 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3019:266:1519:26
6:15
-
10K
6.21 mi10:40:3938:356:1319:09
6:10
-0:05
15K
9.32 mi10:59:5157:476:1219:12
6:11
+0:01
20K
12.43 mi11:19:101:17:066:1219:19
6:13
+0:02
Half
13.11 mi11:23:231:21:196:124:13
6:11
-0:02
25K
15.53 mi11:38:361:36:326:1315:13
6:17
+0:06
30K
18.64 mi11:58:361:56:326:1520:00
6:26
+0:09
20M
20.00 mi12:07:372:05:336:179:01
6:38
+0:12
21M
21.00 mi12:14:312:12:276:186:54
6:54
+0:16
35K
21.75 mi12:19:132:17:096:184:42
6:17
-0:37
23M
23.00 mi12:27:242:25:206:198:11
6:32
+0:15
24M
24.00 mi12:33:472:31:436:196:23
6:23
-0:09
40K
24.85 mi12:39:172:37:136:205:30
6:26
+0:03
25.2M
25.20 mi12:41:382:39:346:202:21
6:49
+0:23
Finish
26.22 mi12:47:422:45:386:196:04
5:57
-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

5:57 /mi

Average Pace

6:19 /mi

Slowest Pace

6:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:22

89% of race

Time at Steady Pace

18:16

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:19 /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 mi10:21:3019:266:1519:26
6:15
#2162
10K
6.21 mi10:40:3938:356:1319:09
6:10
#1918
15K
9.32 mi10:59:5157:476:1219:12
6:11
#1844
20K
12.43 mi11:19:101:17:066:1219:19
6:13
#1772
Half
13.11 mi11:23:231:21:196:124:13
6:11
#1777
25K
15.53 mi11:38:361:36:326:1315:13
6:17
#1760
30K
18.64 mi11:58:361:56:326:1520:00
6:26
#1713
20M
20.00 mi12:07:372:05:336:179:01
6:38
#1727
21M
21.00 mi12:14:312:12:276:186:54
6:54
#1708
35K
21.75 mi12:19:132:17:096:184:42
6:17
#1681
23M
23.00 mi12:27:242:25:206:198:11
6:32
#1624
24M
24.00 mi12:33:472:31:436:196:23
6:23
#1595
40K
24.85 mi12:39:172:37:136:205:30
6:26
#1564
25.2M
25.20 mi12:41:382:39:346:202:21
6:49
#1539
Finish
26.22 mi12:47:422:45:386:196:04
5:57
#1473
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2162206320631745(Top 6%)1658(Top 10%)1658(Top 29%)
10K6.21 mi3.10 mi1918+2441826+2371826+2371736(Top 6%)1652(Top 10%)1652(Top 29%)
15K9.32 mi3.11 mi1844+741755+711755+711745(Top 6%)1658(Top 10%)1658(Top 29%)
20K12.43 mi3.11 mi1772+721685+701685+701646(Top 6%)1564(Top 10%)1564(Top 28%)
Half13.11 mi0.68 mi1777-51688-31688-31847(Top 7%)1760(Top 11%)1760(Top 31%)
25K15.53 mi2.42 mi1760+171672+161672+161750(Top 6%)1662(Top 10%)1662(Top 29%)
30K18.64 mi3.11 mi1713+471628+441628+441700(Top 6%)1613(Top 10%)1613(Top 29%)
20M20.00 mi1.36 mi1727-141641-131641-132158(Top 8%)2039(Top 13%)2039(Top 36%)
21M21.00 mi1.00 mi1708+191620+211620+211865(Top 7%)1756(Top 11%)1756(Top 31%)
35K21.75 mi0.75 mi1681+271593+271593+271525(Top 5%)1435(Top 9%)1435(Top 25%)
23M23.00 mi1.25 mi1624+571537+561537+561573(Top 6%)1471(Top 9%)1471(Top 26%)
24M24.00 mi1.00 mi1595+291509+281509+281593(Top 6%)1486(Top 9%)1486(Top 26%)
40K24.85 mi0.85 mi1564+311479+301479+301371(Top 5%)1272(Top 8%)1272(Top 23%)
25.2M25.20 mi0.35 mi1539+251455+241455+241022(Top 4%)940(Top 6%)940(Top 17%)
Finish26.22 mi1.02 mi1473+661391+641391+64810(Top 3%)763(Top 5%)763(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1745

Males

1658

M18-39

1658

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1736

Males

1652

M18-39

1652

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1745

Males

1658

M18-39

1658

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1646

Males

1564

M18-39

1564

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1847

Males

1760

M18-39

1760

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1750

Males

1662

M18-39

1662

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1700

Males

1613

M18-39

1613

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2158

Males

2039

M18-39

2039

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1865

Males

1756

M18-39

1756

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1525

Males

1435

M18-39

1435

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1573

Males

1471

M18-39

1471

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1593

Males

1486

M18-39

1486

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1371

Males

1272

M18-39

1272

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1022

Males

940

M18-39

940

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

810

Males

763

M18-39

763

Passing Analysis

Category:
Athletes Passed
998
Passed By
309
Net Change
+689
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2162
5K → 10K28036+244#2162#1918
10K → 15K9723+74#1918#1844
15K → 20K9624+72#1844#1772
20K → Half712-5#1772#1777
Half → 25K5740+17#1777#1760
25K → 30K8841+47#1760#1713
30K → 20M3751-14#1713#1727
20M → 21M4627+19#1727#1708
21M → 35K336+27#1708#1681
35K → 23M6710+57#1681#1624
23M → 24M5021+29#1624#1595
24M → 40K4514+31#1595#1564
40K → 25.2M250+25#1564#1539
25.2M → Finish704+66#1539#1473
TOTALS998309+689
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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