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BOSTON MARATHON 2025

Jonathan Rosenblum

Bib: 7292•M

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 16%
Gender (Male)
#0 / 16105
Top 25%
Masters (Masters Men)
#0 / 10463
Top 12%
Division (M40-44)
#0 / 2247
Top 30%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:42
Rank: #5123
Start → 5K
6:40/mi
20:42 split
10K· 6.21 mi
41:48
Rank: #5641 (-518)
5K → 10K
6:47/mi
21:06 split
15K· 9.32 mi
1:02:40
Rank: #5486 (+155)
10K → 15K
6:43/mi
20:52 split
20K· 12.43 mi
1:23:52
Rank: #5468 (+18)
15K → 20K
6:49/mi
21:12 split
Half· 13.11 mi
1:28:25
Rank: #5433 (+35)
20K → Half
6:40/mi
4:33 split
25K· 15.53 mi
1:44:55
Rank: #5304 (+129)
Half → 25K
6:48/mi
16:30 split
30K· 18.64 mi
2:06:26
Rank: #5010 (+294)
25K → 30K
6:56/mi
21:31 split
20M
2:16:19
Rank: #5066 (-56)
30K → 20M
7:16/mi
9:53 split
21M
2:23:46
Rank: #4992 (+74)
20M → 21M
7:27/mi
7:27 split
35K· 21.75 mi
2:28:48
Rank: #4905 (+87)
21M → 35K
6:44/mi
5:02 split
23M
2:37:32
Rank: #4773 (+132)
35K → 23M
6:59/mi
8:44 split
24M
2:44:17
Rank: #4680 (+93)
23M → 24M
6:45/mi
6:45 split
40K· 24.85 mi
2:50:05
Rank: #4569 (+111)
24M → 40K
6:47/mi
5:48 split
25.2M
2:52:35
Rank: #4518 (+51)
40K → 25.2M
7:15/mi
2:30 split
Finish· 26.22 mi
2:59:19
Rank: #4456 (+62)
25.2M → Finish
6:36/mi
6:44 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:25
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:30:54
Pace6:56 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:4720:426:4020:42
6:40
-
10K
6.21 mi10:46:5341:486:4421:06
6:47
+0:07
15K
9.32 mi11:07:451:02:406:4320:52
6:43
-0:04
20K
12.43 mi11:28:571:23:526:4521:12
6:49
+0:06
Half
13.11 mi11:33:301:28:256:454:33
6:40
-0:09
25K
15.53 mi11:50:001:44:556:4516:30
6:48
+0:08
30K
18.64 mi12:11:312:06:266:4721:31
6:56
+0:08
20M
20.00 mi12:21:242:16:196:499:53
7:16
+0:20
21M
21.00 mi12:28:512:23:466:517:27
7:27
+0:11
35K
21.75 mi12:33:532:28:486:515:02
6:44
-0:43
23M
23.00 mi12:42:372:37:326:518:44
6:59
+0:15
24M
24.00 mi12:49:222:44:176:516:45
6:45
-0:14
40K
24.85 mi12:55:102:50:056:515:48
6:47
+0:02
25.2M
25.20 mi12:57:402:52:356:512:30
7:15
+0:28
Finish
26.22 mi13:04:242:59:196:516:44
6:36
-0:39

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

6:36 /mi

Average Pace

6:51 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:59

90% of race

Time at Steady Pace

17:20

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:25:4720:426:4020:42
6:40
#5123
10K
6.21 mi10:46:5341:486:4421:06
6:47
#5641
15K
9.32 mi11:07:451:02:406:4320:52
6:43
#5486
20K
12.43 mi11:28:571:23:526:4521:12
6:49
#5468
Half
13.11 mi11:33:301:28:256:454:33
6:40
#5433
25K
15.53 mi11:50:001:44:556:4516:30
6:48
#5304
30K
18.64 mi12:11:312:06:266:4721:31
6:56
#5010
20M
20.00 mi12:21:242:16:196:499:53
7:16
#5066
21M
21.00 mi12:28:512:23:466:517:27
7:27
#4992
35K
21.75 mi12:33:532:28:486:515:02
6:44
#4905
23M
23.00 mi12:42:372:37:326:518:44
6:59
#4773
24M
24.00 mi12:49:222:44:176:516:45
6:45
#4680
40K
24.85 mi12:55:102:50:056:515:48
6:47
#4569
25.2M
25.20 mi12:57:402:52:356:512:30
7:15
#4518
Finish
26.22 mi13:04:242:59:196:516:44
6:36
#4456
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5123477947795243(Top 18%)4849(Top 30%)4849(Top 216%)
10K6.21 mi3.10 mi5641-5185213-4345213-4346307(Top 22%)5730(Top 36%)5730(Top 255%)
15K9.32 mi3.11 mi5486+1555071+1425071+1425243(Top 18%)4849(Top 30%)4849(Top 216%)
20K12.43 mi3.11 mi5468+185045+265045+265537(Top 19%)5054(Top 31%)5054(Top 225%)
Half13.11 mi0.68 mi5433+355015+305015+305032(Top 18%)4661(Top 29%)4661(Top 207%)
25K15.53 mi2.42 mi5304+1294895+1204895+1204919(Top 17%)4520(Top 28%)4520(Top 201%)
30K18.64 mi3.11 mi5010+2944618+2774618+2774256(Top 15%)3909(Top 24%)3909(Top 174%)
20M20.00 mi1.36 mi5066-564665-474665-475621(Top 20%)4921(Top 31%)4921(Top 219%)
21M21.00 mi1.00 mi4992+744595+704595+704370(Top 15%)3914(Top 24%)3914(Top 174%)
35K21.75 mi0.75 mi4905+874513+824513+823713(Top 13%)3360(Top 21%)3360(Top 150%)
23M23.00 mi1.25 mi4773+1324390+1234390+1233634(Top 13%)3290(Top 20%)3290(Top 146%)
24M24.00 mi1.00 mi4680+934303+874303+873257(Top 11%)2937(Top 18%)2937(Top 131%)
40K24.85 mi0.85 mi4569+1114198+1054198+1052784(Top 10%)2528(Top 16%)2528(Top 113%)
25.2M25.20 mi0.35 mi4518+514148+504148+502381(Top 8%)2134(Top 13%)2134(Top 95%)
Finish26.22 mi1.02 mi4456+624089+594089+593388(Top 12%)2972(Top 18%)2972(Top 132%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21story building
+97ft-345ft

Overall

5243

Males

4849

M40-44

4849

5K→10K

3.1 - 6.2 mi

Top 22%
×5story building
+79ft-138ft

Overall

6307

Males

5730

M40-44

5730

10K→15K

6.2 - 9.3 mi

Top 18%
×3story building
+67ft-78ft

Overall

5243

Males

4849

M40-44

4849

15K→20K

9.3 - 12.4 mi

Top 19%
×5story building
+106ft-86ft

Overall

5537

Males

5054

M40-44

5054

20K→Half

12.4 - 13.1 mi

Top 18%
×2story building
+19ft-37ft

Overall

5032

Males

4661

M40-44

4661

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4919

Males

4520

M40-44

4520

25K→30K

15.5 - 18.6 mi

Top 15%
×9story building
+181ft-148ft

Overall

4256

Males

3909

M40-44

3909

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5621

Males

4921

M40-44

4921

20M→21M

20.0 - 21.0 mi

Top 15%
×8story building
+106ft-24ft

Overall

4370

Males

3914

M40-44

3914

21M→35K

21.0 - 21.8 mi

Top 13%
×7story building
+17ft-86ft

Overall

3713

Males

3360

M40-44

3360

35K→23M

21.8 - 23.0 mi

Top 13%
×5story building
+23ft-63ft

Overall

3634

Males

3290

M40-44

3290

23M→24M

23.0 - 24.0 mi

Top 11%
×6story building
+12ft-82ft

Overall

3257

Males

2937

M40-44

2937

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2784

Males

2528

M40-44

2528

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2381

Males

2134

M40-44

2134

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2story building
+22ft-21ft

Overall

3388

Males

2972

M40-44

2972

Passing Analysis

Category:
Athletes Passed
1714
Passed By
1047
Net Change
+667
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5123
5K → 10K43561-518#5123#5641
10K → 15K21257+155#5641#5486
15K → 20K130112+18#5486#5468
20K → Half5116+35#5468#5433
Half → 25K17647+129#5433#5304
25K → 30K32531+294#5304#5010
30K → 20M60116-56#5010#5066
20M → 21M10834+74#5066#4992
21M → 35K9912+87#4992#4905
35K → 23M14715+132#4905#4773
23M → 24M11118+93#4773#4680
24M → 40K1165+111#4680#4569
40K → 25.2M543+51#4569#4518
25.2M → Finish8220+62#4518#4456
TOTALS17141047+667
📊

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