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BOSTON MARATHON 2025

Alec Ash

Bib: 2536•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 6%
Division (M18-39)
#0 / 5642
Top 15%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:08
Rank: #1642
Start → 5K
19:08 | 6:10/mi
10K· 6.21 mi
37:48
Rank: #1362 (+280)
5K → 10K
18:40 | 6:00/mi
15K· 9.32 mi
56:31
Rank: #1245 (+117)
10K → 15K
18:43 | 6:01/mi
20K· 12.43 mi
1:15:18
Rank: #1170 (+75)
15K → 20K
18:47 | 6:03/mi
Half· 13.11 mi
1:19:19
Rank: #1140 (+30)
20K → Half
4:01 | 5:53/mi
25K· 15.53 mi
1:34:03
Rank: #1102 (+38)
Half → 25K
14:44 | 6:05/mi
30K· 18.64 mi
1:53:34
Rank: #1100 (+2)
25K → 30K
19:31 | 6:17/mi
20M
2:02:11
Rank: #1072 (+28)
30K → 20M
8:37 | 6:20/mi
21M
2:09:02
Rank: #1079 (-7)
20M → 21M
6:51 | 6:51/mi
35K· 21.75 mi
2:13:38
Rank: #1066 (+13)
21M → 35K
4:36 | 6:09/mi
23M
2:21:46
Rank: #1051 (+15)
35K → 23M
8:08 | 6:30/mi
24M
2:28:06
Rank: #1054 (-3)
23M → 24M
6:20 | 6:20/mi
40K· 24.85 mi
2:33:34
Rank: #1044 (+10)
24M → 40K
5:28 | 6:24/mi
25.2M
2:35:58
Rank: #1039 (+5)
40K → 25.2M
2:24 | 6:58/mi
Finish· 26.22 mi
2:42:13
Rank: #1028 (+11)
25.2M → Finish
6:15 | 6:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:19
Pace6:03 /mi
2nd Half
Distance13.11 mi
Time1:22:54
Pace6:19 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:0519:086:1019:08
6:10
-
10K
6.21 mi10:38:4537:486:0518:40
6:00
-0:10
15K
9.32 mi10:57:2856:316:0418:43
6:01
+0:01
20K
12.43 mi11:16:151:15:186:0418:47
6:03
+0:02
Half
13.11 mi11:20:161:19:196:034:01
5:53
-0:10
25K
15.53 mi11:35:001:34:036:0314:44
6:05
+0:12
30K
18.64 mi11:54:311:53:346:0619:31
6:17
+0:12
20M
20.00 mi12:03:082:02:116:078:37
6:20
+0:03
21M
21.00 mi12:09:592:09:026:096:51
6:51
+0:31
35K
21.75 mi12:14:352:13:386:094:36
6:09
-0:42
23M
23.00 mi12:22:432:21:466:108:08
6:30
+0:21
24M
24.00 mi12:29:032:28:066:106:20
6:20
-0:10
40K
24.85 mi12:34:312:33:346:115:28
6:24
+0:04
25.2M
25.20 mi12:36:552:35:586:112:24
6:58
+0:34
Finish
26.22 mi12:43:102:42:136:116:15
6:08
-0:50

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

5:53 /mi

Average Pace

6:11 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:50

89% of race

Time at Steady Pace

14:59

9% of race

Time at Slower Pace

2:24

1% of race

Average Pace: 6:11 /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 mi10:20:0519:086:1019:08
6:10
#1642
10K
6.21 mi10:38:4537:486:0518:40
6:00
#1362
15K
9.32 mi10:57:2856:316:0418:43
6:01
#1245
20K
12.43 mi11:16:151:15:186:0418:47
6:03
#1170
Half
13.11 mi11:20:161:19:196:034:01
5:53
#1140
25K
15.53 mi11:35:001:34:036:0314:44
6:05
#1102
30K
18.64 mi11:54:311:53:346:0619:31
6:17
#1100
20M
20.00 mi12:03:082:02:116:078:37
6:20
#1072
21M
21.00 mi12:09:592:09:026:096:51
6:51
#1079
35K
21.75 mi12:14:352:13:386:094:36
6:09
#1066
23M
23.00 mi12:22:432:21:466:108:08
6:30
#1051
24M
24.00 mi12:29:032:28:066:106:20
6:20
#1054
40K
24.85 mi12:34:312:33:346:115:28
6:24
#1044
25.2M
25.20 mi12:36:552:35:586:112:24
6:58
#1039
Finish
26.22 mi12:43:102:42:136:116:15
6:08
#1028
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1642156015601107(Top 4%)1048(Top 7%)1048(Top 19%)
10K6.21 mi3.10 mi1362+2801295+2651295+2651115(Top 4%)1053(Top 7%)1053(Top 19%)
15K9.32 mi3.11 mi1245+1171182+1131182+1131107(Top 4%)1048(Top 7%)1048(Top 19%)
20K12.43 mi3.11 mi1170+751109+731109+73988(Top 3%)931(Top 6%)931(Top 17%)
Half13.11 mi0.68 mi1140+301080+291080+29821(Top 3%)775(Top 5%)775(Top 14%)
25K15.53 mi2.42 mi1102+381041+391041+391017(Top 4%)960(Top 6%)960(Top 17%)
30K18.64 mi3.11 mi1100+21036+51036+51146(Top 4%)1080(Top 7%)1080(Top 19%)
20M20.00 mi1.36 mi1072+281009+271009+271067(Top 4%)1006(Top 6%)1006(Top 18%)
21M21.00 mi1.00 mi1079-71017-81017-81678(Top 6%)1582(Top 10%)1582(Top 28%)
35K21.75 mi0.75 mi1066+131003+141003+141069(Top 4%)1007(Top 6%)1007(Top 18%)
23M23.00 mi1.25 mi1051+15990+13990+131427(Top 5%)1343(Top 8%)1343(Top 24%)
24M24.00 mi1.00 mi1054-3993-3993-31392(Top 5%)1303(Top 8%)1303(Top 23%)
40K24.85 mi0.85 mi1044+10983+10983+101230(Top 4%)1143(Top 7%)1143(Top 20%)
25.2M25.20 mi0.35 mi1039+5978+5978+51332(Top 5%)1219(Top 8%)1219(Top 22%)
Finish26.22 mi1.02 mi1028+11966+12966+121293(Top 5%)1206(Top 7%)1206(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1107

Males

1048

M18-39

1048

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1115

Males

1053

M18-39

1053

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1107

Males

1048

M18-39

1048

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

988

Males

931

M18-39

931

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

821

Males

775

M18-39

775

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1017

Males

960

M18-39

960

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1146

Males

1080

M18-39

1080

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1067

Males

1006

M18-39

1006

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1678

Males

1582

M18-39

1582

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1069

Males

1007

M18-39

1007

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1427

Males

1343

M18-39

1343

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1392

Males

1303

M18-39

1303

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1230

Males

1143

M18-39

1143

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1332

Males

1219

M18-39

1219

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1293

Males

1206

M18-39

1206

Passing Analysis

Category:
Athletes Passed
815
Passed By
201
Net Change
+614
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1642
5K → 10K2866+280#1642#1362
10K → 15K1225+117#1362#1245
15K → 20K8611+75#1245#1170
20K → Half300+30#1170#1140
Half → 25K4810+38#1140#1102
25K → 30K5351+2#1102#1100
30K → 20M3911+28#1100#1072
20M → 21M2229-7#1072#1079
21M → 35K2310+13#1079#1066
35K → 23M3823+15#1066#1051
23M → 24M1619-3#1051#1054
24M → 40K2111+10#1054#1044
40K → 25.2M94+5#1044#1039
25.2M → Finish2211+11#1039#1028
TOTALS815201+614
📊

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