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BOSTON MARATHON 2025

Rob Dexter

Bib: 10310•M

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 28%
Gender (Male)
#0 / 16105
Top 41%
Masters (Masters Men)
#0 / 10463
Top 28%
Division (M50-54)
#0 / 1996
Top 25%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:42
Rank: #10408
Start → 5K
22:42 | 7:18/mi
10K· 6.21 mi
45:15
Rank: #10189 (+219)
5K → 10K
22:33 | 7:15/mi
15K· 9.32 mi
1:07:46
Rank: #9934 (+255)
10K → 15K
22:31 | 7:15/mi
20K· 12.43 mi
1:30:19
Rank: #9566 (+368)
15K → 20K
22:33 | 7:15/mi
Half· 13.11 mi
1:35:15
Rank: #9551 (+15)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:52:52
Rank: #9268 (+283)
Half → 25K
17:37 | 7:16/mi
30K· 18.64 mi
2:16:10
Rank: #8871 (+397)
25K → 30K
23:18 | 7:30/mi
20M
2:26:23
Rank: #8689 (+182)
30K → 20M
10:13 | 7:31/mi
21M
2:34:30
Rank: #8609 (+80)
20M → 21M
8:07 | 8:07/mi
35K· 21.75 mi
2:39:45
Rank: #8427 (+182)
21M → 35K
5:15 | 7:01/mi
23M
2:49:05
Rank: #8235 (+192)
35K → 23M
9:20 | 7:27/mi
24M
2:56:24
Rank: #8102 (+133)
23M → 24M
7:19 | 7:19/mi
40K· 24.85 mi
3:02:47
Rank: #8010 (+92)
24M → 40K
6:23 | 7:28/mi
25.2M
3:05:38
Rank: #7982 (+28)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:13:07
Rank: #7941 (+41)
25.2M → Finish
7:29 | 7:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:15
Pace7:16 /mi
2nd Half
Distance13.11 mi
Time1:37:52
Pace7:28 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5422:427:1822:42
7:18
-
10K
6.21 mi11:11:2745:157:1722:33
7:15
-0:03
15K
9.32 mi11:33:581:07:467:1622:31
7:15
0:00
20K
12.43 mi11:56:311:30:197:1622:33
7:15
0:00
Half
13.11 mi12:01:271:35:157:164:56
7:14
-0:01
25K
15.53 mi12:19:041:52:527:1617:37
7:16
+0:02
30K
18.64 mi12:42:222:16:107:1823:18
7:30
+0:14
20M
20.00 mi12:52:352:26:237:1910:13
7:31
+0:01
21M
21.00 mi13:00:422:34:307:218:07
8:07
+0:36
35K
21.75 mi13:05:572:39:457:215:15
7:01
-1:06
23M
23.00 mi13:15:172:49:057:219:20
7:27
+0:26
24M
24.00 mi13:22:362:56:247:217:19
7:19
-0:08
40K
24.85 mi13:28:593:02:477:216:23
7:28
+0:09
25.2M
25.20 mi13:31:503:05:387:222:51
8:16
+0:48
Finish
26.22 mi13:39:193:13:077:227:29
7:21
-0:55

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

7:01 /mi

Average Pace

7:22 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:02:09

94% of race

Time at Steady Pace

10:58

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:22 /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 mi10:48:5422:427:1822:42
7:18
#10408
10K
6.21 mi11:11:2745:157:1722:33
7:15
#10189
15K
9.32 mi11:33:581:07:467:1622:31
7:15
#9934
20K
12.43 mi11:56:311:30:197:1622:33
7:15
#9566
Half
13.11 mi12:01:271:35:157:164:56
7:14
#9551
25K
15.53 mi12:19:041:52:527:1617:37
7:16
#9268
30K
18.64 mi12:42:222:16:107:1823:18
7:30
#8871
20M
20.00 mi12:52:352:26:237:1910:13
7:31
#8689
21M
21.00 mi13:00:422:34:307:218:07
8:07
#8609
35K
21.75 mi13:05:572:39:457:215:15
7:01
#8427
23M
23.00 mi13:15:172:49:057:219:20
7:27
#8235
24M
24.00 mi13:22:362:56:247:217:19
7:19
#8102
40K
24.85 mi13:28:593:02:477:216:23
7:28
#8010
25.2M
25.20 mi13:31:503:05:387:222:51
8:16
#7982
Finish
26.22 mi13:39:193:13:077:227:29
7:21
#7941
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi10408838683869513(Top 33%)7823(Top 49%)7823(Top 392%)
10K6.21 mi3.10 mi10189+2198261+1258261+1259971(Top 35%)8121(Top 50%)8121(Top 407%)
15K9.32 mi3.11 mi9934+2558092+1698092+1699513(Top 33%)7823(Top 49%)7823(Top 392%)
20K12.43 mi3.11 mi9566+3687865+2277865+2278675(Top 31%)7263(Top 45%)7263(Top 364%)
Half13.11 mi0.68 mi9551+157853+127853+129269(Top 33%)7612(Top 47%)7612(Top 381%)
25K15.53 mi2.42 mi9268+2837673+1807673+1808095(Top 28%)6820(Top 42%)6820(Top 342%)
30K18.64 mi3.11 mi8871+3977392+2817392+2817730(Top 27%)6425(Top 40%)6425(Top 322%)
20M20.00 mi1.36 mi8689+1827251+1417251+1417127(Top 25%)5922(Top 37%)5922(Top 297%)
21M21.00 mi1.00 mi8609+807174+777174+778031(Top 28%)6266(Top 39%)6266(Top 314%)
35K21.75 mi0.75 mi8427+1827041+1337041+1335487(Top 19%)4727(Top 29%)4727(Top 237%)
23M23.00 mi1.25 mi8235+1926890+1516890+1516377(Top 22%)5208(Top 32%)5208(Top 261%)
24M24.00 mi1.00 mi8102+1336763+1276763+1276511(Top 23%)5233(Top 32%)5233(Top 262%)
40K24.85 mi0.85 mi8010+926678+856678+856593(Top 23%)5200(Top 32%)5200(Top 261%)
25.2M25.20 mi0.35 mi7982+286644+346644+347410(Top 26%)5575(Top 35%)5575(Top 279%)
Finish26.22 mi1.02 mi7941+416592+526592+528054(Top 28%)5939(Top 37%)5939(Top 298%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

9513

Males

7823

M50-54

7823

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9971

Males

8121

M50-54

8121

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

9513

Males

7823

M50-54

7823

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8675

Males

7263

M50-54

7263

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

9269

Males

7612

M50-54

7612

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

8095

Males

6820

M50-54

6820

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7730

Males

6425

M50-54

6425

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

7127

Males

5922

M50-54

5922

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

8031

Males

6266

M50-54

6266

21M→35K

21.0 - 21.8 mi

Top 19%
×7stories
+17ft-86ft

Overall

5487

Males

4727

M50-54

4727

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

6377

Males

5208

M50-54

5208

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

6511

Males

5233

M50-54

5233

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6593

Males

5200

M50-54

5200

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7410

Males

5575

M50-54

5575

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

8054

Males

5939

M50-54

5939

Passing Analysis

Category:
Athletes Passed
3021*
Passed By
554
Net Change
+2467
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10408
5K → 10K372153+219#10408#10189
10K → 15K326*71+255#10189#9934
15K → 20K39426+368#9934#9566
20K → Half3924+15#9566#9551
Half → 25K30926+283#9551#9268
25K → 30K44851+397#9268#8871
30K → 20M19917+182#8871#8689
20M → 21M13555+80#8689#8609
21M → 35K1864+182#8609#8427
35K → 23M21018+192#8427#8235
23M → 24M15421+133#8235#8102
24M → 40K10715+92#8102#8010
40K → 25.2M4820+28#8010#7982
25.2M → Finish9453+41#7982#7941
TOTALS3021*554+2467

* 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