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BOSTON MARATHON 2025

Daniel Alpert

Bib: 3517•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 6%
Gender (Male)
#0 / 16105
Top 10%
Division (M18-39)
#0 / 5642
Top 25%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:16
Rank: #1880
Start → 5K
19:16 | 6:12/mi
10K· 6.21 mi
38:55
Rank: #2204 (-324)
5K → 10K
19:39 | 6:19/mi
15K· 9.32 mi
58:17
Rank: #2124 (+80)
10K → 15K
19:22 | 6:14/mi
20K· 12.43 mi
1:17:49
Rank: #2063 (+61)
15K → 20K
19:32 | 6:17/mi
Half· 13.11 mi
1:22:03
Rank: #2065 (-2)
20K → Half
4:14 | 6:12/mi
25K· 15.53 mi
1:37:27
Rank: #2058 (+7)
Half → 25K
15:24 | 6:21/mi
30K· 18.64 mi
1:57:50
Rank: #2048 (+10)
25K → 30K
20:23 | 6:34/mi
20M
2:06:54
Rank: #2046 (+2)
30K → 20M
9:04 | 6:40/mi
21M
2:13:49
Rank: #2026 (+20)
20M → 21M
6:55 | 6:55/mi
35K· 21.75 mi
2:18:41
Rank: #2020 (+6)
21M → 35K
4:52 | 6:30/mi
23M
2:26:59
Rank: #1982 (+38)
35K → 23M
8:18 | 6:38/mi
24M
2:33:15
Rank: #1906 (+76)
23M → 24M
6:16 | 6:16/mi
40K· 24.85 mi
2:38:41
Rank: #1840 (+66)
24M → 40K
5:26 | 6:21/mi
25.2M
2:41:04
Rank: #1818 (+22)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:47:11
Rank: #1751 (+67)
25.2M → Finish
6:07 | 6:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:03
Pace6:16 /mi
2nd Half
Distance13.11 mi
Time1:25:08
Pace6:30 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0819:166:1219:16
6:12
-
10K
6.21 mi10:41:4738:556:1619:39
6:19
+0:07
15K
9.32 mi11:01:0958:176:1519:22
6:14
-0:05
20K
12.43 mi11:20:411:17:496:1619:32
6:17
+0:03
Half
13.11 mi11:24:551:22:036:164:14
6:12
-0:05
25K
15.53 mi11:40:191:37:276:1615:24
6:21
+0:09
30K
18.64 mi12:00:421:57:506:1920:23
6:34
+0:13
20M
20.00 mi12:09:462:06:546:219:04
6:40
+0:06
21M
21.00 mi12:16:412:13:496:226:55
6:55
+0:15
35K
21.75 mi12:21:332:18:416:234:52
6:30
-0:25
23M
23.00 mi12:29:512:26:596:238:18
6:38
+0:08
24M
24.00 mi12:36:072:33:156:236:16
6:16
-0:22
40K
24.85 mi12:41:332:38:416:235:26
6:21
+0:05
25.2M
25.20 mi12:43:562:41:046:232:23
6:55
+0:34
Finish
26.22 mi12:50:032:47:116:236:07
6:00
-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

6:00 /mi

Average Pace

6:23 /mi

Slowest Pace

6:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:31

84% of race

Time at Steady Pace

26:40

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:23 /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 mi10:22:0819:166:1219:16
6:12
#1880
10K
6.21 mi10:41:4738:556:1619:39
6:19
#2204
15K
9.32 mi11:01:0958:176:1519:22
6:14
#2124
20K
12.43 mi11:20:411:17:496:1619:32
6:17
#2063
Half
13.11 mi11:24:551:22:036:164:14
6:12
#2065
25K
15.53 mi11:40:191:37:276:1615:24
6:21
#2058
30K
18.64 mi12:00:421:57:506:1920:23
6:34
#2048
20M
20.00 mi12:09:462:06:546:219:04
6:40
#2046
21M
21.00 mi12:16:412:13:496:226:55
6:55
#2026
35K
21.75 mi12:21:332:18:416:234:52
6:30
#2020
23M
23.00 mi12:29:512:26:596:238:18
6:38
#1982
24M
24.00 mi12:36:072:33:156:236:16
6:16
#1906
40K
24.85 mi12:41:332:38:416:235:26
6:21
#1840
25.2M
25.20 mi12:43:562:41:046:232:23
6:55
#1818
Finish
26.22 mi12:50:032:47:116:236:07
6:00
#1751
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1880178617862006(Top 7%)1910(Top 12%)1910(Top 34%)
10K6.21 mi3.10 mi2204-3242104-3182104-3182571(Top 9%)2455(Top 15%)2455(Top 44%)
15K9.32 mi3.11 mi2124+802027+772027+772006(Top 7%)1910(Top 12%)1910(Top 34%)
20K12.43 mi3.11 mi2063+611969+581969+581959(Top 7%)1866(Top 12%)1866(Top 33%)
Half13.11 mi0.68 mi2065-21972-31972-32032(Top 7%)1941(Top 12%)1941(Top 34%)
25K15.53 mi2.42 mi2058+71963+91963+92113(Top 7%)2011(Top 12%)2011(Top 36%)
30K18.64 mi3.11 mi2048+101952+111952+112245(Top 8%)2124(Top 13%)2124(Top 38%)
20M20.00 mi1.36 mi2046+21949+31949+32340(Top 8%)2210(Top 14%)2210(Top 39%)
21M21.00 mi1.00 mi2026+201928+211928+211952(Top 7%)1841(Top 11%)1841(Top 33%)
35K21.75 mi0.75 mi2020+61920+81920+82494(Top 9%)2327(Top 14%)2327(Top 41%)
23M23.00 mi1.25 mi1982+381882+381882+381959(Top 7%)1830(Top 11%)1830(Top 32%)
24M24.00 mi1.00 mi1906+761808+741808+741225(Top 4%)1150(Top 7%)1150(Top 20%)
40K24.85 mi0.85 mi1840+661742+661742+661127(Top 4%)1056(Top 7%)1056(Top 19%)
25.2M25.20 mi0.35 mi1818+221721+211721+211269(Top 4%)1171(Top 7%)1171(Top 21%)
Finish26.22 mi1.02 mi1751+671658+631658+63935(Top 3%)880(Top 5%)880(Top 16%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

2006

Males

1910

M18-39

1910

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2571

Males

2455

M18-39

2455

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

2006

Males

1910

M18-39

1910

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1959

Males

1866

M18-39

1866

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

2032

Males

1941

M18-39

1941

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

2113

Males

2011

M18-39

2011

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2245

Males

2124

M18-39

2124

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2340

Males

2210

M18-39

2210

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1952

Males

1841

M18-39

1841

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2494

Males

2327

M18-39

2327

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1959

Males

1830

M18-39

1830

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1225

Males

1150

M18-39

1150

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1127

Males

1056

M18-39

1056

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1269

Males

1171

M18-39

1171

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

935

Males

880

M18-39

880

Passing Analysis

Category:
Athletes Passed
798
Passed By
669
Net Change
+129
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1880
5K → 10K27351-324#1880#2204
10K → 15K11737+80#2204#2124
15K → 20K9130+61#2124#2063
20K → Half1214-2#2063#2065
Half → 25K5043+7#2065#2058
25K → 30K7464+10#2058#2048
30K → 20M4543+2#2048#2046
20M → 21M4222+20#2046#2026
21M → 35K3226+6#2026#2020
35K → 23M6527+38#2020#1982
23M → 24M804+76#1982#1906
24M → 40K660+66#1906#1840
40K → 25.2M264+22#1840#1818
25.2M → Finish714+67#1818#1751
TOTALS798669+129
📊

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