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BOSTON MARATHON 2025

Gregory Costello

Bib: 1727•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 28%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:44
Rank: #1158
Start → 5K
18:44 | 6:02/mi
10K· 6.21 mi
37:24
Rank: #1131 (+27)
5K → 10K
18:40 | 6:00/mi
15K· 9.32 mi
56:09
Rank: #1126 (+5)
10K → 15K
18:45 | 6:02/mi
20K· 12.43 mi
1:15:43
Rank: #1296 (-170)
15K → 20K
19:34 | 6:18/mi
Half· 13.11 mi
1:19:40
Rank: #1237 (+59)
20K → Half
3:57 | 5:47/mi
25K· 15.53 mi
1:34:16
Rank: #1162 (+75)
Half → 25K
14:36 | 6:01/mi
30K· 18.64 mi
1:53:39
Rank: #1113 (+49)
25K → 30K
19:23 | 6:14/mi
20M
2:02:28
Rank: #1124 (-11)
30K → 20M
8:49 | 6:29/mi
21M
2:09:26
Rank: #1145 (-21)
20M → 21M
6:58 | 6:58/mi
35K· 21.75 mi
2:14:59
Rank: #1274 (-129)
21M → 35K
5:33 | 7:25/mi
23M
2:24:53
Rank: #1544 (-270)
35K → 23M
9:54 | 7:54/mi
24M
2:32:28
Rank: #1748 (-204)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
2:38:55
Rank: #1880 (-132)
24M → 40K
6:27 | 7:33/mi
25.2M
2:41:39
Rank: #1916 (-36)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
2:48:44
Rank: #2024 (-108)
25.2M → Finish
7:05 | 6:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:40
Pace6:05 /mi
2nd Half
Distance13.11 mi
Time1:29:04
Pace6:48 /mi
📊Positive Split: 11.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:1618:446:0218:44
6:02
-
10K
6.21 mi10:37:5637:246:0118:40
6:00
-0:02
15K
9.32 mi10:56:4156:096:0118:45
6:02
+0:02
20K
12.43 mi11:16:151:15:436:0619:34
6:18
+0:16
Half
13.11 mi11:20:121:19:406:053:57
5:47
-0:31
25K
15.53 mi11:34:481:34:166:0414:36
6:01
+0:14
30K
18.64 mi11:54:111:53:396:0619:23
6:14
+0:13
20M
20.00 mi12:03:002:02:286:078:49
6:29
+0:15
21M
21.00 mi12:09:582:09:266:106:58
6:58
+0:29
35K
21.75 mi12:15:312:14:596:125:33
7:25
+0:27
23M
23.00 mi12:25:252:24:536:189:54
7:54
+0:29
24M
24.00 mi12:33:002:32:286:217:35
7:35
-0:19
40K
24.85 mi12:39:272:38:556:246:27
7:33
-0:02
25.2M
25.20 mi12:42:112:41:396:252:44
7:56
+0:23
Finish
26.22 mi12:49:162:48:446:267:05
6:57
-0:59

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

5:47 /mi

Average Pace

6:26 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:14:42

44% of race

Time at Steady Pace

47:46

28% of race

Time at Slower Pace

46:16

27% of race

Average Pace: 6:26 /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 mi10:19:1618:446:0218:44
6:02
#1158
10K
6.21 mi10:37:5637:246:0118:40
6:00
#1131
15K
9.32 mi10:56:4156:096:0118:45
6:02
#1126
20K
12.43 mi11:16:151:15:436:0619:34
6:18
#1296
Half
13.11 mi11:20:121:19:406:053:57
5:47
#1237
25K
15.53 mi11:34:481:34:166:0414:36
6:01
#1162
30K
18.64 mi11:54:111:53:396:0619:23
6:14
#1113
20M
20.00 mi12:03:002:02:286:078:49
6:29
#1124
21M
21.00 mi12:09:582:09:266:106:58
6:58
#1145
35K
21.75 mi12:15:312:14:596:125:33
7:25
#1274
23M
23.00 mi12:25:252:24:536:189:54
7:54
#1544
24M
24.00 mi12:33:002:32:286:217:35
7:35
#1748
40K
24.85 mi12:39:272:38:556:246:27
7:33
#1880
25.2M
25.20 mi12:42:112:41:396:252:44
7:56
#1916
Finish
26.22 mi12:49:162:48:446:267:05
6:57
#2024
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1158109610961155(Top 4%)1093(Top 7%)1093(Top 19%)
10K6.21 mi3.10 mi1131+271068+281068+281121(Top 4%)1059(Top 7%)1059(Top 19%)
15K9.32 mi3.11 mi1126+51064+41064+41155(Top 4%)1093(Top 7%)1093(Top 19%)
20K12.43 mi3.11 mi1296-1701227-1631227-1631994(Top 7%)1899(Top 12%)1899(Top 34%)
Half13.11 mi0.68 mi1237+591170+571170+57581(Top 2%)547(Top 3%)547(Top 10%)
25K15.53 mi2.42 mi1162+751098+721098+72867(Top 3%)814(Top 5%)814(Top 14%)
30K18.64 mi3.11 mi1113+491049+491049+491036(Top 4%)974(Top 6%)974(Top 17%)
20M20.00 mi1.36 mi1124-111060-111060-111574(Top 6%)1488(Top 9%)1488(Top 26%)
21M21.00 mi1.00 mi1145-211080-201080-202115(Top 7%)1980(Top 12%)1980(Top 35%)
35K21.75 mi0.75 mi1274-1291200-1201200-1207983(Top 28%)6268(Top 39%)6268(Top 111%)
23M23.00 mi1.25 mi1544-2701462-2621462-2629302(Top 33%)6859(Top 43%)6859(Top 122%)
24M24.00 mi1.00 mi1748-2041656-1941656-1948237(Top 29%)6227(Top 39%)6227(Top 110%)
40K24.85 mi0.85 mi1880-1321782-1261782-1266994(Top 25%)5412(Top 34%)5412(Top 96%)
25.2M25.20 mi0.35 mi1916-361814-321814-325450(Top 19%)4368(Top 27%)4368(Top 77%)
Finish26.22 mi1.02 mi2024-1081919-1051919-1055373(Top 19%)4341(Top 27%)4341(Top 77%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1155

Males

1093

M18-39

1093

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1121

Males

1059

M18-39

1059

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1155

Males

1093

M18-39

1093

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1994

Males

1899

M18-39

1899

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

581

Males

547

M18-39

547

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

867

Males

814

M18-39

814

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1036

Males

974

M18-39

974

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1574

Males

1488

M18-39

1488

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

2115

Males

1980

M18-39

1980

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7983

Males

6268

M18-39

6268

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

9302

Males

6859

M18-39

6859

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8237

Males

6227

M18-39

6227

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6994

Males

5412

M18-39

5412

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5450

Males

4368

M18-39

4368

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

5373

Males

4341

M18-39

4341

Passing Analysis

Category:
Athletes Passed
414
Passed By
1280
Net Change
-866
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1158
5K → 10K7447+27#1158#1131
10K → 15K3631+5#1131#1126
15K → 20K9179-170#1126#1296
20K → Half590+59#1296#1237
Half → 25K827+75#1237#1162
25K → 30K7627+49#1162#1113
30K → 20M2536-11#1113#1124
20M → 21M2142-21#1124#1145
21M → 35K3132-129#1145#1274
35K → 23M6276-270#1274#1544
23M → 24M5209-204#1544#1748
24M → 40K8140-132#1748#1880
40K → 25.2M440-36#1880#1916
25.2M → Finish6114-108#1916#2024
TOTALS4141280-866
📊

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