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BOSTON MARATHON 2025

Jp Milczarski

Bib: 2856•M

ON

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 3%
Gender (Male)
#0 / 16105
Top 4%
Division (M18-39)
#0 / 5642
Top 10%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:08/mi
19:03
↑ 97↓ 3451.5%
10K· 6.21 mi
5:58/mi
37:36
↑ 79↓ 1380.4%
15K· 9.32 mi
5:50/mi
55:44
↑ 67↓ 78
20K· 12.43 mi
5:57/mi
1:14:13
↑ 106↓ 860.1%
Half· 13.11 mi
5:50/mi
1:18:12
↑ 19↓ 370.5%
25K· 15.53 mi
6:00/mi
1:32:44
↑ 66↓ 880.2%
30K· 18.64 mi
6:07/mi
1:51:44
↑ 181↓ 1480.2%
20M
6:12/mi
2:00:10
↑ 64↓ 500.2%
21M
6:39/mi
2:06:49
↑ 106↓ 241.6%
35K· 21.75 mi
5:53/mi
2:11:13
↑ 17↓ 861.7%
23M
6:11/mi
2:18:58
↑ 23↓ 630.6%
24M
6:09/mi
2:25:07
↓ 821.3%
40K· 24.85 mi
6:32/mi
2:30:42
↓ 200.3%
25.2M
6:55/mi
2:33:05
↑ 13↓ 160.2%
Finish· 26.22 mi
5:54/mi
2:39:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:12
Pace5:58 /mi
2nd Half
Distance13.11 mi
Time1:20:54
Pace6:10 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:2219:036:0819:03
6:08
-
10K
6.21 mi10:38:5537:366:0318:33
5:58
-0:10
15K
9.32 mi10:57:0355:445:5918:08
5:50
-0:08
20K
12.43 mi11:15:321:14:135:5818:29
5:57
+0:07
Half
13.11 mi11:19:311:18:125:583:59
5:50
-0:07
25K
15.53 mi11:34:031:32:445:5814:32
6:00
+0:10
30K
18.64 mi11:53:031:51:446:0019:00
6:07
+0:07
20M
20.00 mi12:01:292:00:106:008:26
6:12
+0:05
21M
21.00 mi12:08:082:06:496:026:39
6:39
+0:27
35K
21.75 mi12:12:322:11:136:024:24
5:53
-0:46
23M
23.00 mi12:20:172:18:586:037:45
6:11
+0:18
24M
24.00 mi12:26:262:25:076:036:09
6:09
-0:02
40K
24.85 mi12:32:012:30:426:045:35
6:32
+0:23
25.2M
25.20 mi12:34:242:33:056:042:23
6:55
+0:23
Finish
26.22 mi12:40:252:39:066:046:01
5:54
-1:01

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

5:50 /mi

Average Pace

6:04 /mi

Slowest Pace

6:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:29

91% of race

Time at Steady Pace

12:14

8% of race

Time at Slower Pace

2:23

1% of race

Average Pace: 6:04 /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 mi10:20:2219:036:0819:03
6:08
#1523
10K
6.21 mi10:38:5537:366:0318:33
5:58
#1226
15K
9.32 mi10:57:0355:445:5918:08
5:50
#996
20K
12.43 mi11:15:321:14:135:5818:29
5:57
#924
Half
13.11 mi11:19:311:18:125:583:59
5:50
#908
25K
15.53 mi11:34:031:32:445:5814:32
6:00
#871
30K
18.64 mi11:53:031:51:446:0019:00
6:07
#809
20M
20.00 mi12:01:292:00:106:008:26
6:12
#791
21M
21.00 mi12:08:082:06:496:026:39
6:39
#780
35K
21.75 mi12:12:322:11:136:024:24
5:53
#752
23M
23.00 mi12:20:172:18:586:037:45
6:11
#733
24M
24.00 mi12:26:262:25:076:036:09
6:09
#725
40K
24.85 mi12:32:012:30:426:045:35
6:32
#731
25.2M
25.20 mi12:34:242:33:056:042:23
6:55
#733
Finish
26.22 mi12:40:252:39:066:046:01
5:54
#720
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi152314501450604(Top 2%)562(Top 3%)562(Top 10%)
10K6.21 mi3.10 mi1226+2971163+2871163+2871025(Top 4%)967(Top 6%)967(Top 17%)
15K9.32 mi3.11 mi996+230939+224939+224604(Top 2%)562(Top 3%)562(Top 10%)
20K12.43 mi3.11 mi924+72869+70869+70741(Top 3%)693(Top 4%)693(Top 12%)
Half13.11 mi0.68 mi908+16855+14855+14672(Top 2%)629(Top 4%)629(Top 11%)
25K15.53 mi2.42 mi871+37819+36819+36782(Top 3%)734(Top 5%)734(Top 13%)
30K18.64 mi3.11 mi809+62759+60759+60720(Top 3%)674(Top 4%)674(Top 12%)
20M20.00 mi1.36 mi791+18741+18741+18738(Top 3%)696(Top 4%)696(Top 12%)
21M21.00 mi1.00 mi780+11730+11730+111041(Top 4%)984(Top 6%)984(Top 17%)
35K21.75 mi0.75 mi752+28703+27703+27505(Top 2%)470(Top 3%)470(Top 8%)
23M23.00 mi1.25 mi733+19684+19684+19655(Top 2%)618(Top 4%)618(Top 11%)
24M24.00 mi1.00 mi725+8676+8676+8883(Top 3%)829(Top 5%)829(Top 15%)
40K24.85 mi0.85 mi731-6682-6682-61687(Top 6%)1557(Top 10%)1557(Top 28%)
25.2M25.20 mi0.35 mi733-2684-2684-21205(Top 4%)1107(Top 7%)1107(Top 20%)
Finish26.22 mi1.02 mi720+13670+14670+14686(Top 2%)646(Top 4%)646(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21story building
+97ft-345ft

Overall

604

Males

562

M18-39

562

5K→10K

3.1 - 6.2 mi

Top 4%
×5story building
+79ft-138ft

Overall

1025

Males

967

M18-39

967

10K→15K

6.2 - 9.3 mi

Top 2%
×3story building
+67ft-78ft

Overall

604

Males

562

M18-39

562

15K→20K

9.3 - 12.4 mi

Top 3%
×5story building
+106ft-86ft

Overall

741

Males

693

M18-39

693

20K→Half

12.4 - 13.1 mi

Top 2%
×2story building
+19ft-37ft

Overall

672

Males

629

M18-39

629

Half→25K

13.1 - 15.5 mi

Top 3%
×4story building
+66ft-88ft

Overall

782

Males

734

M18-39

734

25K→30K

15.5 - 18.6 mi

Top 3%
×9story building
+181ft-148ft

Overall

720

Males

674

M18-39

674

30K→20M

18.6 - 20.0 mi

Top 3%
×5story building
+64ft-50ft

Overall

738

Males

696

M18-39

696

20M→21M

20.0 - 21.0 mi

Top 4%
×8story building
+106ft-24ft

Overall

1041

Males

984

M18-39

984

21M→35K

21.0 - 21.8 mi

Top 2%
×7story building
+17ft-86ft

Overall

505

Males

470

M18-39

470

35K→23M

21.8 - 23.0 mi

Top 2%
×5story building
+23ft-63ft

Overall

655

Males

618

M18-39

618

23M→24M

23.0 - 24.0 mi

Top 3%
×6story building
+12ft-82ft

Overall

883

Males

829

M18-39

829

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1687

Males

1557

M18-39

1557

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1205

Males

1107

M18-39

1107

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2story building
+22ft-21ft

Overall

686

Males

646

M18-39

646

Passing Analysis

Category:
Athletes Passed
891
Passed By
88
Net Change
+803
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1523
5K → 10K3014+297#1523#1226
10K → 15K2311+230#1226#996
15K → 20K764+72#996#924
20K → Half182+16#924#908
Half → 25K436+37#908#871
25K → 30K7412+62#871#809
30K → 20M268+18#809#791
20M → 21M187+11#791#780
21M → 35K280+28#780#752
35K → 23M278+19#752#733
23M → 24M168+8#733#725
24M → 40K612-6#725#731
40K → 25.2M46-2#731#733
25.2M → Finish2310+13#733#720
TOTALS89188+803
📊

Passing Visuals

Category:
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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