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BOSTON MARATHON 2025

Lev Rosenzweig-Ziff

Bib: 27999•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
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
8:53/mi
27:35
↑ 97↓ 3451.5%
10K· 6.21 mi
8:46/mi
54:50
↑ 79↓ 1380.4%
15K· 9.32 mi
8:32/mi
1:21:21
↑ 67↓ 78
20K· 12.43 mi
8:26/mi
1:47:33
↑ 106↓ 860.1%
Half· 13.11 mi
8:46/mi
1:53:32
↑ 19↓ 370.5%
25K· 15.53 mi
8:46/mi
2:14:46
↑ 66↓ 880.2%
30K· 18.64 mi
10:36/mi
2:47:43
↑ 181↓ 1480.2%
20M
10:45/mi
3:02:20
↑ 64↓ 500.2%
21M
11:23/mi
3:13:43
↑ 106↓ 241.6%
35K· 21.75 mi
11:47/mi
3:22:32
↑ 17↓ 861.7%
23M
10:56/mi
3:36:13
↑ 23↓ 630.6%
24M
11:19/mi
3:47:32
↓ 821.3%
40K· 24.85 mi
11:15/mi
3:57:09
↓ 200.3%
25.2M
11:21/mi
4:01:04
↑ 13↓ 160.2%
Finish· 26.22 mi
9:56/mi
4:11:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:32
Pace8:40 /mi
2nd Half
Distance13.11 mi
Time2:17:39
Pace10:30 /mi
📊Positive Split: 21.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:1527:358:5327:35
8:53
-
10K
6.21 mi12:15:3054:508:4927:15
8:46
-0:07
15K
9.32 mi12:42:011:21:218:4426:31
8:32
-0:14
20K
12.43 mi13:08:131:47:338:3926:12
8:26
-0:06
Half
13.11 mi13:14:121:53:328:405:59
8:46
+0:20
25K
15.53 mi13:35:262:14:468:4121:14
8:46
0:00
30K
18.64 mi14:08:232:47:439:0032:57
10:36
+1:50
20M
20.00 mi14:23:003:02:209:0714:37
10:45
+0:09
21M
21.00 mi14:34:233:13:439:1311:23
11:23
+0:38
35K
21.75 mi14:43:123:22:329:198:49
11:47
+0:24
23M
23.00 mi14:56:533:36:139:2413:41
10:56
-0:51
24M
24.00 mi15:08:123:47:329:2911:19
11:19
+0:23
40K
24.85 mi15:17:493:57:099:329:37
11:15
-0:04
25.2M
25.20 mi15:21:444:01:049:343:55
11:21
+0:06
Finish
26.22 mi15:31:514:11:119:3510:07
9:56
-1:25

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

8:26 /mi

Average Pace

9:35 /mi

Slowest Pace

11:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:53

58% of race

Time at Steady Pace

1:01:15

24% of race

Time at Slower Pace

45:03

18% of race

Average Pace: 9:35 /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 mi11:48:1527:358:5327:35
8:53
#21887
10K
6.21 mi12:15:3054:508:4927:15
8:46
#21572
15K
9.32 mi12:42:011:21:218:4426:31
8:32
#20896
20K
12.43 mi13:08:131:47:338:3926:12
8:26
#20152
Half
13.11 mi13:14:121:53:328:405:59
8:46
#20178
25K
15.53 mi13:35:262:14:468:4121:14
8:46
#19917
30K
18.64 mi14:08:232:47:439:0032:57
10:36
#20855
20M
20.00 mi14:23:003:02:209:0714:37
10:45
#21108
21M
21.00 mi14:34:233:13:439:1311:23
11:23
#21230
35K
21.75 mi14:43:123:22:329:198:49
11:47
#21516
23M
23.00 mi14:56:533:36:139:2413:41
10:56
#21624
24M
24.00 mi15:08:123:47:329:2911:19
11:19
#21794
40K
24.85 mi15:17:493:57:099:329:37
11:15
#21879
25.2M
25.20 mi15:21:444:01:049:343:55
11:21
#21869
Finish
26.22 mi15:31:514:11:119:3510:07
9:56
#21884
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21887132621326219533(Top 69%)12291(Top 76%)12291(Top 218%)
10K6.21 mi3.10 mi21572+31513136+12613136+12621252(Top 75%)13021(Top 81%)13021(Top 231%)
15K9.32 mi3.11 mi20896+67612851+28512851+28519533(Top 69%)12291(Top 76%)12291(Top 218%)
20K12.43 mi3.11 mi20152+74412537+31412537+31417758(Top 63%)11515(Top 71%)11515(Top 204%)
Half13.11 mi0.68 mi20178-2612542-512542-520703(Top 73%)12759(Top 79%)12759(Top 226%)
25K15.53 mi2.42 mi19917+26112428+11412428+11418732(Top 66%)11845(Top 74%)11845(Top 210%)
30K18.64 mi3.11 mi20855-93812785-35712785-35723173(Top 82%)13687(Top 85%)13687(Top 243%)
20M20.00 mi1.36 mi21108-25312883-9812883-9823078(Top 81%)13562(Top 84%)13562(Top 240%)
21M21.00 mi1.00 mi21230-12212927-4412927-4422341(Top 79%)13123(Top 81%)13123(Top 233%)
35K21.75 mi0.75 mi21516-28613049-12213049-12225543(Top 90%)14604(Top 91%)14604(Top 259%)
23M23.00 mi1.25 mi21624-10813062-1313062-1323057(Top 81%)13364(Top 83%)13364(Top 237%)
24M24.00 mi1.00 mi21794-17013110-4813110-4824593(Top 87%)14101(Top 88%)14101(Top 250%)
40K24.85 mi0.85 mi21879-8513128-1813128-1823656(Top 83%)13589(Top 84%)13589(Top 241%)
25.2M25.20 mi0.35 mi21869+1013116+1213116+1221661(Top 76%)12618(Top 78%)12618(Top 224%)
Finish26.22 mi1.02 mi21884-1513113+313113+322700(Top 80%)13124(Top 81%)13124(Top 233%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

19533

Males

12291

M18-39

12291

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21252

Males

13021

M18-39

13021

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

19533

Males

12291

M18-39

12291

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

17758

Males

11515

M18-39

11515

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

20703

Males

12759

M18-39

12759

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

18732

Males

11845

M18-39

11845

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

23173

Males

13687

M18-39

13687

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

23078

Males

13562

M18-39

13562

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22341

Males

13123

M18-39

13123

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

25543

Males

14604

M18-39

14604

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

23057

Males

13364

M18-39

13364

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

24593

Males

14101

M18-39

14101

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

23656

Males

13589

M18-39

13589

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21661

Males

12618

M18-39

12618

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

22700

Males

13124

M18-39

13124

Passing Analysis

Category:
Athletes Passed
2559
Passed By
2556
Net Change
+3
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21887
5K → 10K461146+315#21887#21572
10K → 15K68812+676#21572#20896
15K → 20K7506+744#20896#20152
20K → Half2753-26#20152#20178
Half → 25K30039+261#20178#19917
25K → 30K54992-938#19917#20855
30K → 20M39292-253#20855#21108
20M → 21M52174-122#21108#21230
21M → 35K13299-286#21230#21516
35K → 23M60168-108#21516#21624
23M → 24M15185-170#21624#21794
24M → 40K27112-85#21794#21879
40K → 25.2M2414+10#21879#21869
25.2M → Finish4964-15#21869#21884
TOTALS25592556+3
📊

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