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BOSTON MARATHON 2025

Mathew Rembowicz

Bib: 7971•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 30%
Gender (Male)
#0 / 16105
Top 43%
Masters (Masters Men)
#0 / 10463
Top 31%
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:43
Rank: #10461
Start → 5K
22:43 | 7:19/mi
10K· 6.21 mi
44:50
Rank: #9577 (+884)
5K → 10K
22:07 | 7:07/mi
15K· 9.32 mi
1:06:52
Rank: #9100 (+477)
10K → 15K
22:02 | 7:06/mi
20K· 12.43 mi
1:29:14
Rank: #8798 (+302)
15K → 20K
22:22 | 7:12/mi
Half· 13.11 mi
1:34:09
Rank: #8811 (-13)
20K → Half
4:55 | 7:12/mi
25K· 15.53 mi
1:51:47
Rank: #8641 (+170)
Half → 25K
17:38 | 7:16/mi
30K· 18.64 mi
2:14:55
Rank: #8321 (+320)
25K → 30K
23:08 | 7:27/mi
20M
2:25:17
Rank: #8251 (+70)
30K → 20M
10:22 | 7:38/mi
21M
2:33:11
Rank: #8091 (+160)
20M → 21M
7:54 | 7:54/mi
35K· 21.75 mi
2:38:56
Rank: #8109 (-18)
21M → 35K
5:45 | 7:41/mi
23M
2:48:52
Rank: #8159 (-50)
35K → 23M
9:56 | 7:56/mi
24M
2:56:45
Rank: #8216 (-57)
23M → 24M
7:53 | 7:53/mi
40K· 24.85 mi
3:03:40
Rank: #8276 (-60)
24M → 40K
6:55 | 8:05/mi
25.2M
3:06:43
Rank: #8304 (-28)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:14:50
Rank: #8494 (-190)
25.2M → Finish
8:07 | 7:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:09
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:40:41
Pace7:41 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2222:437:1922:43
7:19
-
10K
6.21 mi11:12:2944:507:1322:07
7:07
-0:12
15K
9.32 mi11:34:311:06:527:1022:02
7:06
-0:01
20K
12.43 mi11:56:531:29:147:1122:22
7:12
+0:06
Half
13.11 mi12:01:481:34:097:114:55
7:12
0:00
25K
15.53 mi12:19:261:51:477:1217:38
7:16
+0:04
30K
18.64 mi12:42:342:14:557:1423:08
7:27
+0:11
20M
20.00 mi12:52:562:25:177:1610:22
7:38
+0:11
21M
21.00 mi13:00:502:33:117:187:54
7:54
+0:16
35K
21.75 mi13:06:352:38:567:185:45
7:41
-0:13
23M
23.00 mi13:16:312:48:527:219:56
7:56
+0:15
24M
24.00 mi13:24:242:56:457:227:53
7:53
-0:03
40K
24.85 mi13:31:193:03:407:236:55
8:05
+0:12
25.2M
25.20 mi13:34:223:06:437:253:03
8:51
+0:46
Finish
26.22 mi13:42:293:14:507:268:07
7:58
-0:53

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

7:06 /mi

Average Pace

7:26 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:47

57% of race

Time at Steady Pace

39:15

20% of race

Time at Slower Pace

43:48

22% of race

Average Pace: 7:26 /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 mi10:50:2222:437:1922:43
7:19
#10461
10K
6.21 mi11:12:2944:507:1322:07
7:07
#9577
15K
9.32 mi11:34:311:06:527:1022:02
7:06
#9100
20K
12.43 mi11:56:531:29:147:1122:22
7:12
#8798
Half
13.11 mi12:01:481:34:097:114:55
7:12
#8811
25K
15.53 mi12:19:261:51:477:1217:38
7:16
#8641
30K
18.64 mi12:42:342:14:557:1423:08
7:27
#8321
20M
20.00 mi12:52:562:25:177:1610:22
7:38
#8251
21M
21.00 mi13:00:502:33:117:187:54
7:54
#8091
35K
21.75 mi13:06:352:38:567:185:45
7:41
#8109
23M
23.00 mi13:16:312:48:527:219:56
7:56
#8159
24M
24.00 mi13:24:242:56:457:227:53
7:53
#8216
40K
24.85 mi13:31:193:03:407:236:55
8:05
#8276
25.2M
25.20 mi13:34:223:06:437:253:03
8:51
#8304
Finish
26.22 mi13:42:293:14:507:268:07
7:58
#8494
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi10461841484148275(Top 29%)7109(Top 44%)7109(Top 316%)
10K6.21 mi3.10 mi9577+8847949+4657949+4658826(Top 31%)7494(Top 47%)7494(Top 334%)
15K9.32 mi3.11 mi9100+4777641+3087641+3088275(Top 29%)7109(Top 44%)7109(Top 316%)
20K12.43 mi3.11 mi8798+3027441+2007441+2008200(Top 29%)6993(Top 43%)6993(Top 311%)
Half13.11 mi0.68 mi8811-137447-67447-69081(Top 32%)7513(Top 47%)7513(Top 334%)
25K15.53 mi2.42 mi8641+1707324+1237324+1238142(Top 29%)6847(Top 43%)6847(Top 305%)
30K18.64 mi3.11 mi8321+3207072+2527072+2527353(Top 26%)6191(Top 38%)6191(Top 276%)
20M20.00 mi1.36 mi8251+707000+727000+727886(Top 28%)6373(Top 40%)6373(Top 284%)
21M21.00 mi1.00 mi8091+1606860+1406860+1406788(Top 24%)5559(Top 35%)5559(Top 247%)
35K21.75 mi0.75 mi8109-186855+56855+59909(Top 35%)7309(Top 45%)7309(Top 325%)
23M23.00 mi1.25 mi8159-506840+156840+159504(Top 33%)6975(Top 43%)6975(Top 310%)
24M24.00 mi1.00 mi8216-576839+16839+110410(Top 37%)7377(Top 46%)7377(Top 328%)
40K24.85 mi0.85 mi8276-606847-86847-810749(Top 38%)7427(Top 46%)7427(Top 331%)
25.2M25.20 mi0.35 mi8304-286843+46843+410827(Top 38%)7380(Top 46%)7380(Top 328%)
Finish26.22 mi1.02 mi8494-1906934-916934-9112605(Top 44%)8323(Top 52%)8323(Top 370%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

8275

Males

7109

M40-44

7109

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8826

Males

7494

M40-44

7494

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

8275

Males

7109

M40-44

7109

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

8200

Males

6993

M40-44

6993

20K→Half

12.4 - 13.1 mi

Top 32%
×2stories
+19ft-37ft

Overall

9081

Males

7513

M40-44

7513

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

8142

Males

6847

M40-44

6847

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

7353

Males

6191

M40-44

6191

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7886

Males

6373

M40-44

6373

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6788

Males

5559

M40-44

5559

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9909

Males

7309

M40-44

7309

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

9504

Males

6975

M40-44

6975

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

10410

Males

7377

M40-44

7377

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10749

Males

7427

M40-44

7427

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10827

Males

7380

M40-44

7380

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

12605

Males

8323

M40-44

8323

Passing Analysis

Category:
Athletes Passed
3009*
Passed By
1042
Net Change
+1967
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10461
5K → 10K924*40+884#10461#9577
10K → 15K49518+477#9577#9100
15K → 20K33533+302#9100#8798
20K → Half2437-13#8798#8811
Half → 25K23161+170#8811#8641
25K → 30K38565+320#8641#8321
30K → 20M12656+70#8321#8251
20M → 21M18222+160#8251#8091
21M → 35K5573-18#8091#8109
35K → 23M94144-50#8109#8159
23M → 24M66123-57#8159#8216
24M → 40K53113-60#8216#8276
40K → 25.2M2149-28#8276#8304
25.2M → Finish18208-190#8304#8494
TOTALS3009*1042+1967

* 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