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BOSTON MARATHON 2025

Dan Brounstein

Bib: 7435•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 20%
Gender (Male)
#0 / 16105
Top 32%
Masters (Masters Men)
#0 / 10463
Top 18%
Division (M50-54)
#0 / 1996
Top 12%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:54
Rank: #5681
Start → 5K
20:54 | 6:44/mi
10K· 6.21 mi
41:47
Rank: #5606 (+75)
5K → 10K
20:53 | 6:43/mi
15K· 9.32 mi
1:02:54
Rank: #5680 (-74)
10K → 15K
21:07 | 6:48/mi
20K· 12.43 mi
1:24:07
Rank: #5660 (+20)
15K → 20K
21:13 | 6:50/mi
Half· 13.11 mi
1:28:44
Rank: #5662 (-2)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:45:22
Rank: #5566 (+96)
Half → 25K
16:38 | 6:52/mi
30K· 18.64 mi
2:07:36
Rank: #5557 (+9)
25K → 30K
22:14 | 7:09/mi
20M
2:17:28
Rank: #5551 (+6)
30K → 20M
9:52 | 7:16/mi
21M
2:25:15
Rank: #5552 (-1)
20M → 21M
7:47 | 7:47/mi
35K· 21.75 mi
2:30:42
Rank: #5590 (-38)
21M → 35K
5:27 | 7:17/mi
23M
2:40:13
Rank: #5590
35K → 23M
9:31 | 7:36/mi
24M
2:47:46
Rank: #5635 (-45)
23M → 24M
7:33 | 7:33/mi
40K· 24.85 mi
2:54:18
Rank: #5641 (-6)
24M → 40K
6:32 | 7:38/mi
25.2M
2:57:15
Rank: #5647 (-6)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
3:05:10
Rank: #5788 (-141)
25.2M → Finish
7:55 | 7:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:44
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:36:26
Pace7:21 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:3620:546:4420:54
6:44
-
10K
6.21 mi10:48:2941:476:4320:53
6:43
-0:01
15K
9.32 mi11:09:361:02:546:4521:07
6:48
+0:05
20K
12.43 mi11:30:491:24:076:4621:13
6:50
+0:02
Half
13.11 mi11:35:261:28:446:464:37
6:46
-0:04
25K
15.53 mi11:52:041:45:226:4716:38
6:52
+0:06
30K
18.64 mi12:14:182:07:366:5122:14
7:09
+0:17
20M
20.00 mi12:24:102:17:286:529:52
7:16
+0:07
21M
21.00 mi12:31:572:25:156:557:47
7:47
+0:31
35K
21.75 mi12:37:242:30:426:565:27
7:17
-0:30
23M
23.00 mi12:46:552:40:136:589:31
7:36
+0:19
24M
24.00 mi12:54:282:47:466:597:33
7:33
-0:03
40K
24.85 mi13:01:002:54:187:016:32
7:38
+0:05
25.2M
25.20 mi13:03:572:57:157:022:57
8:33
+0:55
Finish
26.22 mi13:11:523:05:107:047:55
7:46
-0:47

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

6:43 /mi

Average Pace

7:04 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:22

57% of race

Time at Steady Pace

37:33

20% of race

Time at Slower Pace

42:15

23% of race

Average Pace: 7:04 /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 mi10:27:3620:546:4420:54
6:44
#5681
10K
6.21 mi10:48:2941:476:4320:53
6:43
#5606
15K
9.32 mi11:09:361:02:546:4521:07
6:48
#5680
20K
12.43 mi11:30:491:24:076:4621:13
6:50
#5660
Half
13.11 mi11:35:261:28:446:464:37
6:46
#5662
25K
15.53 mi11:52:041:45:226:4716:38
6:52
#5566
30K
18.64 mi12:14:182:07:366:5122:14
7:09
#5557
20M
20.00 mi12:24:102:17:286:529:52
7:16
#5551
21M
21.00 mi12:31:572:25:156:557:47
7:47
#5552
35K
21.75 mi12:37:242:30:426:565:27
7:17
#5590
23M
23.00 mi12:46:552:40:136:589:31
7:36
#5590
24M
24.00 mi12:54:282:47:466:597:33
7:33
#5635
40K
24.85 mi13:01:002:54:187:016:32
7:38
#5641
25.2M
25.20 mi13:03:572:57:157:022:57
8:33
#5647
Finish
26.22 mi13:11:523:05:107:047:55
7:46
#5788
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5681524852486049(Top 21%)5499(Top 34%)5499(Top 276%)
10K6.21 mi3.10 mi5606+755180+685180+685524(Top 19%)5085(Top 32%)5085(Top 255%)
15K9.32 mi3.11 mi5680-745234-545234-546049(Top 21%)5499(Top 34%)5499(Top 276%)
20K12.43 mi3.11 mi5660+205199+355199+355577(Top 20%)5084(Top 32%)5084(Top 255%)
Half13.11 mi0.68 mi5662-25201-25201-25784(Top 20%)5271(Top 33%)5271(Top 264%)
25K15.53 mi2.42 mi5566+965114+875114+875360(Top 19%)4888(Top 30%)4888(Top 245%)
30K18.64 mi3.11 mi5557+95084+305084+305642(Top 20%)5045(Top 31%)5045(Top 253%)
20M20.00 mi1.36 mi5551+65072+125072+125535(Top 19%)4860(Top 30%)4860(Top 243%)
21M21.00 mi1.00 mi5552-15063+95063+96065(Top 21%)5091(Top 32%)5091(Top 255%)
35K21.75 mi0.75 mi5590-385084-215084-217076(Top 25%)5728(Top 36%)5728(Top 287%)
23M23.00 mi1.25 mi55905067+175067+177221(Top 25%)5701(Top 35%)5701(Top 286%)
24M24.00 mi1.00 mi5635-455083-165083-168008(Top 28%)6103(Top 38%)6103(Top 306%)
40K24.85 mi0.85 mi5641-65077+65077+67651(Top 27%)5789(Top 36%)5789(Top 290%)
25.2M25.20 mi0.35 mi5647-65069+85069+88989(Top 32%)6408(Top 40%)6408(Top 321%)
Finish26.22 mi1.02 mi5788-1415158-895158-8911160(Top 39%)7578(Top 47%)7578(Top 380%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

6049

Males

5499

M50-54

5499

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5524

Males

5085

M50-54

5085

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

6049

Males

5499

M50-54

5499

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5577

Males

5084

M50-54

5084

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5784

Males

5271

M50-54

5271

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5360

Males

4888

M50-54

4888

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5642

Males

5045

M50-54

5045

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5535

Males

4860

M50-54

4860

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

6065

Males

5091

M50-54

5091

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

7076

Males

5728

M50-54

5728

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

7221

Males

5701

M50-54

5701

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

8008

Males

6103

M50-54

6103

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7651

Males

5789

M50-54

5789

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8989

Males

6408

M50-54

6408

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

11160

Males

7578

M50-54

7578

Passing Analysis

Category:
Athletes Passed
1225
Passed By
1332
Net Change
-107
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5681
5K → 10K220145+75#5681#5606
10K → 15K103177-74#5606#5680
15K → 20K141121+20#5680#5660
20K → Half2325-2#5660#5662
Half → 25K15862+96#5662#5566
25K → 30K185176+9#5566#5557
30K → 20M7569+6#5557#5551
20M → 21M6667-1#5551#5552
21M → 35K2967-38#5552#5590
35K → 23M85850#5590#5590
23M → 24M3782-45#5590#5635
24M → 40K4753-6#5635#5641
40K → 25.2M3238-6#5641#5647
25.2M → Finish24165-141#5647#5788
TOTALS12251332-107
📊

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