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BOSTON MARATHON 2025

Lawrence Coassin

Bib: 26182•M

CT

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:16/mi
22:34
↑ 97↓ 3451.5%
10K· 6.21 mi
7:30/mi
45:51
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:10:28
↑ 67↓ 78
20K· 12.43 mi
7:59/mi
1:35:15
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:40:32
↑ 19↓ 370.5%
25K· 15.53 mi
8:24/mi
2:00:55
↑ 66↓ 880.2%
30K· 18.64 mi
8:58/mi
2:28:46
↑ 181↓ 1480.2%
20M
8:50/mi
2:40:46
↑ 64↓ 500.2%
21M
8:55/mi
2:49:41
↑ 106↓ 241.6%
35K· 21.75 mi
9:17/mi
2:56:38
↑ 17↓ 861.7%
23M
9:32/mi
3:08:34
↑ 23↓ 630.6%
24M
9:16/mi
3:17:50
↓ 821.3%
40K· 24.85 mi
8:45/mi
3:25:19
↓ 200.3%
25.2M
8:45/mi
3:28:20
↑ 13↓ 160.2%
Finish· 26.22 mi
7:10/mi
3:35:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:32
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time1:55:06
Pace8:47 /mi
📊Positive Split: 14.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:37:5622:347:1622:34
7:16
-
10K
6.21 mi12:01:1345:517:2323:17
7:30
+0:14
15K
9.32 mi12:25:501:10:287:3424:37
7:55
+0:25
20K
12.43 mi12:50:371:35:157:4024:47
7:59
+0:04
Half
13.11 mi12:55:541:40:327:405:17
7:45
-0:14
25K
15.53 mi13:16:172:00:557:4720:23
8:24
+0:39
30K
18.64 mi13:44:082:28:467:5927:51
8:58
+0:34
20M
20.00 mi13:56:082:40:468:0212:00
8:50
-0:08
21M
21.00 mi14:05:032:49:418:058:55
8:55
+0:05
35K
21.75 mi14:12:002:56:388:076:57
9:17
+0:22
23M
23.00 mi14:23:563:08:348:1211:56
9:32
+0:15
24M
24.00 mi14:33:123:17:508:159:16
9:16
-0:16
40K
24.85 mi14:40:413:25:198:167:29
8:45
-0:31
25.2M
25.20 mi14:43:423:28:208:163:01
8:45
0:00
Finish
26.22 mi14:51:003:35:388:147:18
7:10
-1:35

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

7:10 /mi

Average Pace

8:14 /mi

Slowest Pace

9:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:50

50% of race

Time at Steady Pace

1:19:39

37% of race

Time at Slower Pace

28:09

13% of race

Average Pace: 8:13 /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 mi11:37:5622:347:1622:34
7:16
#10012
10K
6.21 mi12:01:1345:517:2323:17
7:30
#11038
15K
9.32 mi12:25:501:10:287:3424:37
7:55
#12508
20K
12.43 mi12:50:371:35:157:4024:47
7:59
#13053
Half
13.11 mi12:55:541:40:327:405:17
7:45
#13088
25K
15.53 mi13:16:172:00:557:4720:23
8:24
#13750
30K
18.64 mi13:44:082:28:467:5927:51
8:58
#14538
20M
20.00 mi13:56:082:40:468:0212:00
8:50
#14650
21M
21.00 mi14:05:032:49:418:058:55
8:55
#14503
35K
21.75 mi14:12:002:56:388:076:57
9:17
#14727
23M
23.00 mi14:23:563:08:348:1211:56
9:32
#15008
24M
24.00 mi14:33:123:17:508:159:16
9:16
#15206
40K
24.85 mi14:40:413:25:198:167:29
8:45
#15170
25.2M
25.20 mi14:43:423:28:208:163:01
8:45
#15081
Finish
26.22 mi14:51:003:35:388:147:18
7:10
#14728
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi100128178817815406(Top 54%)10548(Top 65%)10548(Top 187%)
10K6.21 mi3.10 mi11038-10268693-5158693-51512037(Top 42%)9169(Top 57%)9169(Top 163%)
15K9.32 mi3.11 mi12508-14709364-6719364-67115406(Top 54%)10548(Top 65%)10548(Top 187%)
20K12.43 mi3.11 mi13053-5459535-1719535-17114742(Top 52%)10199(Top 63%)10199(Top 181%)
Half13.11 mi0.68 mi13088-359553-189553-1813745(Top 48%)9794(Top 61%)9794(Top 174%)
25K15.53 mi2.42 mi13750-6629814-2619814-26116602(Top 58%)10920(Top 68%)10920(Top 194%)
30K18.64 mi3.11 mi14538-78810086-27210086-27217472(Top 62%)11133(Top 69%)11133(Top 197%)
20M20.00 mi1.36 mi14650-11210107-2110107-2115814(Top 56%)10286(Top 64%)10286(Top 182%)
21M21.00 mi1.00 mi14503+14710020+8710020+8713014(Top 46%)8852(Top 55%)8852(Top 157%)
35K21.75 mi0.75 mi14727-22410097-7710097-7719508(Top 69%)11727(Top 73%)11727(Top 208%)
23M23.00 mi1.25 mi15008-28110197-10010197-10018810(Top 66%)11352(Top 70%)11352(Top 201%)
24M24.00 mi1.00 mi15206-19810236-3910236-3918633(Top 66%)11223(Top 70%)11223(Top 199%)
40K24.85 mi0.85 mi15170+3610187+4910187+4914896(Top 52%)9393(Top 58%)9393(Top 166%)
25.2M25.20 mi0.35 mi15081+8910138+4910138+4910298(Top 36%)7122(Top 44%)7122(Top 126%)
Finish26.22 mi1.02 mi14728+3539973+1659973+1656820(Top 24%)5230(Top 32%)5230(Top 93%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15406

Males

10548

M18-39

10548

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

12037

Males

9169

M18-39

9169

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15406

Males

10548

M18-39

10548

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14742

Males

10199

M18-39

10199

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

13745

Males

9794

M18-39

9794

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16602

Males

10920

M18-39

10920

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

17472

Males

11133

M18-39

11133

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

15814

Males

10286

M18-39

10286

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

13014

Males

8852

M18-39

8852

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

19508

Males

11727

M18-39

11727

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

18810

Males

11352

M18-39

11352

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

18633

Males

11223

M18-39

11223

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14896

Males

9393

M18-39

9393

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

10298

Males

7122

M18-39

7122

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6820

Males

5230

M18-39

5230

Passing Analysis

Category:
Athletes Passed
1235
Passed By
5950
Net Change
-4716
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10012
5K → 10K331058-1026#10012#11038
10K → 15K181488-1470#11038#12508
15K → 20K79624-545#12508#13053
20K → Half2964-35#13053#13088
Half → 25K54716-662#13088#13750
25K → 30K88876-788#13750#14538
30K → 20M106218-112#14538#14650
20M → 21M18639+147#14650#14503
21M → 35K21245-224#14503#14727
35K → 23M56337-281#14727#15008
23M → 24M34232-198#15008#15206
24M → 40K8650+36#15206#15170
40K → 25.2M923+89#15170#15081
25.2M → Finish3530+353#15081#14728
TOTALS12355950-4716
📊

Passing Visuals

Category:
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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