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BOSTON MARATHON 2025

Michael Arnstein

Bib: 6832•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 10%
Gender (Male)
#0 / 16105
Top 17%
Masters (Masters Men)
#0 / 10463
Top 6%
Division (M45-49)
#0 / 2386
Top 6%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:06
Rank: #3601
Start → 5K
20:06 | 6:28/mi
10K· 6.21 mi
40:31
Rank: #3916 (-315)
5K → 10K
20:25 | 6:34/mi
15K· 9.32 mi
1:01:17
Rank: #4209 (-293)
10K → 15K
20:46 | 6:41/mi
20K· 12.43 mi
1:22:32
Rank: #4475 (-266)
15K → 20K
21:15 | 6:50/mi
Half· 13.11 mi
1:27:06
Rank: #4512 (-37)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:43:06
Rank: #4265 (+247)
Half → 25K
16:00 | 6:36/mi
30K· 18.64 mi
2:03:45
Rank: #3879 (+386)
25K → 30K
20:39 | 6:39/mi
20M
2:12:48
Rank: #3704 (+175)
30K → 20M
9:03 | 6:40/mi
21M
2:19:49
Rank: #3598 (+106)
20M → 21M
7:01 | 7:01/mi
35K· 21.75 mi
2:24:46
Rank: #3554 (+44)
21M → 35K
4:57 | 6:37/mi
23M
2:33:05
Rank: #3381 (+173)
35K → 23M
8:19 | 6:39/mi
24M
2:39:38
Rank: #3284 (+97)
23M → 24M
6:33 | 6:33/mi
40K· 24.85 mi
2:45:13
Rank: #3173 (+111)
24M → 40K
5:35 | 6:32/mi
25.2M
2:47:41
Rank: #3112 (+61)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:53:44
Rank: #2953 (+159)
25.2M → Finish
6:03 | 5:56/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:27:06
Pace6:39 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:26:38
Pace6:37 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:1520:066:2820:06
6:28
-
10K
6.21 mi10:41:4040:316:3120:25
6:34
+0:06
15K
9.32 mi11:02:261:01:176:3520:46
6:41
+0:07
20K
12.43 mi11:23:411:22:326:3821:15
6:50
+0:09
Half
13.11 mi11:28:151:27:066:394:34
6:42
-0:08
25K
15.53 mi11:44:151:43:066:3816:00
6:36
-0:06
30K
18.64 mi12:04:542:03:456:3820:39
6:39
+0:03
20M
20.00 mi12:13:572:12:486:389:03
6:40
+0:01
21M
21.00 mi12:20:582:19:496:397:01
7:01
+0:21
35K
21.75 mi12:25:552:24:466:394:57
6:37
-0:24
23M
23.00 mi12:34:142:33:056:398:19
6:39
+0:02
24M
24.00 mi12:40:472:39:386:396:33
6:33
-0:06
40K
24.85 mi12:46:222:45:136:395:35
6:32
-0:01
25.2M
25.20 mi12:48:502:47:416:392:28
7:09
+0:37
Finish
26.22 mi12:54:532:53:446:386:03
5:56
-1:13

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

5:56 /mi

Average Pace

6:38 /mi

Slowest Pace

7:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:09

15% of race

Time at Steady Pace

1:56:51

67% of race

Time at Slower Pace

30:44

18% of race

Average Pace: 6:38 /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 mi10:21:1520:066:2820:06
6:28
#3601
10K
6.21 mi10:41:4040:316:3120:25
6:34
#3916
15K
9.32 mi11:02:261:01:176:3520:46
6:41
#4209
20K
12.43 mi11:23:411:22:326:3821:15
6:50
#4475
Half
13.11 mi11:28:151:27:066:394:34
6:42
#4512
25K
15.53 mi11:44:151:43:066:3816:00
6:36
#4265
30K
18.64 mi12:04:542:03:456:3820:39
6:39
#3879
20M
20.00 mi12:13:572:12:486:389:03
6:40
#3704
21M
21.00 mi12:20:582:19:496:397:01
7:01
#3598
35K
21.75 mi12:25:552:24:466:394:57
6:37
#3554
23M
23.00 mi12:34:142:33:056:398:19
6:39
#3381
24M
24.00 mi12:40:472:39:386:396:33
6:33
#3284
40K
24.85 mi12:46:222:45:136:395:35
6:32
#3173
25.2M
25.20 mi12:48:502:47:416:392:28
7:09
#3112
Finish
26.22 mi12:54:532:53:446:386:03
5:56
#2953
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi3601341634164911(Top 17%)4574(Top 28%)4574(Top 192%)
10K6.21 mi3.10 mi3916-3153702-2863702-2864220(Top 15%)3965(Top 25%)3965(Top 166%)
15K9.32 mi3.11 mi4209-2933960-2583960-2584911(Top 17%)4574(Top 28%)4574(Top 192%)
20K12.43 mi3.11 mi4475-2664194-2344194-2345666(Top 20%)5164(Top 32%)5164(Top 216%)
Half13.11 mi0.68 mi4512-374228-344228-345132(Top 18%)4727(Top 29%)4727(Top 198%)
25K15.53 mi2.42 mi4265+2474000+2284000+2283442(Top 12%)3247(Top 20%)3247(Top 136%)
30K18.64 mi3.11 mi3879+3863652+3483652+3482624(Top 9%)2483(Top 15%)2483(Top 104%)
20M20.00 mi1.36 mi3704+1753489+1633489+1632277(Top 8%)2151(Top 13%)2151(Top 90%)
21M21.00 mi1.00 mi3598+1063387+1023387+1022311(Top 8%)2157(Top 13%)2157(Top 90%)
35K21.75 mi0.75 mi3554+443346+413346+413016(Top 11%)2771(Top 17%)2771(Top 116%)
23M23.00 mi1.25 mi3381+1733185+1613185+1612001(Top 7%)1871(Top 12%)1871(Top 78%)
24M24.00 mi1.00 mi3284+973092+933092+932247(Top 8%)2079(Top 13%)2079(Top 87%)
40K24.85 mi0.85 mi3173+1112988+1042988+1041726(Top 6%)1596(Top 10%)1596(Top 67%)
25.2M25.20 mi0.35 mi3112+612932+562932+561954(Top 7%)1767(Top 11%)1767(Top 74%)
Finish26.22 mi1.02 mi2953+1592788+1442788+144788(Top 3%)742(Top 5%)742(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4911

Males

4574

M45-49

4574

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4220

Males

3965

M45-49

3965

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4911

Males

4574

M45-49

4574

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5666

Males

5164

M45-49

5164

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

5132

Males

4727

M45-49

4727

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3442

Males

3247

M45-49

3247

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2624

Males

2483

M45-49

2483

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2277

Males

2151

M45-49

2151

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2311

Males

2157

M45-49

2157

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3016

Males

2771

M45-49

2771

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

2001

Males

1871

M45-49

1871

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2247

Males

2079

M45-49

2079

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1726

Males

1596

M45-49

1596

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1954

Males

1767

M45-49

1767

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

788

Males

742

M45-49

742

Passing Analysis

Category:
Athletes Passed
1723
Passed By
1075
Net Change
+648
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3601
5K → 10K36351-315#3601#3916
10K → 15K28321-293#3916#4209
15K → 20K42308-266#4209#4475
20K → Half643-37#4475#4512
Half → 25K2547+247#4512#4265
25K → 30K3926+386#4265#3879
30K → 20M1783+175#3879#3704
20M → 21M1126+106#3704#3598
21M → 35K5814+44#3598#3554
35K → 23M1752+173#3554#3381
23M → 24M1058+97#3381#3284
24M → 40K1143+111#3284#3173
40K → 25.2M632+61#3173#3112
25.2M → Finish1601+159#3112#2953
TOTALS17231075+648
📊

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