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BOSTON MARATHON 2025

Robert Larkin

Bib: 19393•X

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Other)
#0 / 71
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
8:21/mi
25:55
↑ 97↓ 3451.5%
10K· 6.21 mi
8:14/mi
51:29
↑ 79↓ 1380.4%
15K· 9.32 mi
8:21/mi
1:17:25
↑ 67↓ 78
20K· 12.43 mi
8:29/mi
1:43:47
↑ 106↓ 860.1%
Half· 13.11 mi
8:26/mi
1:49:32
↑ 19↓ 370.5%
25K· 15.53 mi
8:43/mi
2:10:39
↑ 66↓ 880.2%
30K· 18.64 mi
9:22/mi
2:39:45
↑ 181↓ 1480.2%
20M
13:56/mi
2:58:41
↑ 64↓ 500.2%
21M
17:10/mi
3:15:51
↑ 106↓ 241.6%
35K· 21.75 mi
11:56/mi
3:24:47
↑ 17↓ 861.7%
23M
11:34/mi
3:39:16
↑ 23↓ 630.6%
24M
10:59/mi
3:50:15
↓ 821.3%
40K· 24.85 mi
11:58/mi
4:00:29
↓ 200.3%
25.2M
11:59/mi
4:04:37
↑ 13↓ 160.2%
Finish· 26.22 mi
10:10/mi
4:14:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:32
Pace8:21 /mi
2nd Half
Distance13.11 mi
Time2:25:27
Pace11:06 /mi
📊Positive Split: 32.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:3525:558:2125:55
8:21
-
10K
6.21 mi11:43:0951:298:1725:34
8:14
-0:07
15K
9.32 mi12:09:051:17:258:1825:56
8:21
+0:07
20K
12.43 mi12:35:271:43:478:2126:22
8:29
+0:08
Half
13.11 mi12:41:121:49:328:215:45
8:26
-0:03
25K
15.53 mi13:02:192:10:398:2521:07
8:43
+0:17
30K
18.64 mi13:31:252:39:458:3429:06
9:22
+0:39
20M
20.00 mi13:50:212:58:418:5618:56
13:56
+4:34
21M
21.00 mi14:07:313:15:519:2017:10
17:10
+3:14
35K
21.75 mi14:16:273:24:479:258:56
11:56
-5:14
23M
23.00 mi14:30:563:39:169:3214:29
11:34
-0:22
24M
24.00 mi14:41:553:50:159:3610:59
10:59
-0:35
40K
24.85 mi14:52:094:00:299:4110:14
11:58
+0:59
25.2M
25.20 mi14:56:174:04:379:424:08
11:59
+0:01
Finish
26.22 mi15:06:394:14:599:4410:22
10:10
-1:49

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

8:14 /mi

Average Pace

9:44 /mi

Slowest Pace

17:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:39

51% of race

Time at Steady Pace

50:27

20% of race

Time at Slower Pace

1:13:53

29% of race

Average Pace: 9:43 /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 mi11:17:3525:558:2125:55
8:21
#18962
10K
6.21 mi11:43:0951:298:1725:34
8:14
#18511
15K
9.32 mi12:09:051:17:258:1825:56
8:21
#18436
20K
12.43 mi12:35:271:43:478:2126:22
8:29
#18317
Half
13.11 mi12:41:121:49:328:215:45
8:26
#18329
25K
15.53 mi13:02:192:10:398:2521:07
8:43
#18335
30K
18.64 mi13:31:252:39:458:3429:06
9:22
#18566
20M
20.00 mi13:50:212:58:418:5618:56
13:56
#20234
21M
21.00 mi14:07:313:15:519:2017:10
17:10
#21635
35K
21.75 mi14:16:273:24:479:258:56
11:56
#21891
23M
23.00 mi14:30:563:39:169:3214:29
11:34
#22071
24M
24.00 mi14:41:553:50:159:3610:59
10:59
#22166
40K
24.85 mi14:52:094:00:299:4110:14
11:58
#22312
25.2M
25.20 mi14:56:174:04:379:424:08
11:59
#22313
Finish
26.22 mi15:06:394:14:599:4410:22
10:10
#22346
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallXAge DivSeg. OverallSeg. XSeg. Age Div
5K3.11 mi3.11 mi18962565618348(Top 65%)52(Top 73%)52
10K6.21 mi3.10 mi18511+45154+254+218091(Top 64%)52(Top 73%)52
15K9.32 mi3.11 mi18436+75545418348(Top 65%)52(Top 73%)52
20K12.43 mi3.11 mi18317+11952+252+218127(Top 64%)52(Top 73%)52
Half13.11 mi0.68 mi18329-12525218677(Top 66%)55(Top 77%)55
25K15.53 mi2.42 mi18335-6525218426(Top 65%)51(Top 72%)51
30K18.64 mi3.11 mi18566-23154-254-219400(Top 68%)51(Top 72%)51
20M20.00 mi1.36 mi20234-166856-256-227232(Top 96%)69(Top 97%)69
21M21.00 mi1.00 mi21635-140159-359-328172(Top 99%)71(Top 100%)71
35K21.75 mi0.75 mi21891-256595925768(Top 91%)67(Top 94%)67
23M23.00 mi1.25 mi22071-18061-261-224365(Top 86%)60(Top 85%)60
24M24.00 mi1.00 mi22166-95616123944(Top 84%)59(Top 83%)59
40K24.85 mi0.85 mi22312-146616124875(Top 88%)62(Top 87%)62
25.2M25.20 mi0.35 mi22313-1616123155(Top 82%)59(Top 83%)59
Finish26.22 mi1.02 mi22346-3360+160+123431(Top 82%)60(Top 85%)60

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18348

X

52

Age Div

52

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

18091

X

52

Age Div

52

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18348

X

52

Age Div

52

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

18127

X

52

Age Div

52

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18677

X

55

Age Div

55

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

18426

X

51

Age Div

51

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

19400

X

51

Age Div

51

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

27232

X

69

Age Div

69

20M→21M

20.0 - 21.0 mi

Top 99%
×8story building
+106ft-24ft

Overall

28172

X

71

Age Div

71

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

25768

X

67

Age Div

67

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

24365

X

60

Age Div

60

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

23944

X

59

Age Div

59

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

24875

X

62

Age Div

62

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23155

X

59

Age Div

59

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

23431

X

60

Age Div

60

Passing Analysis

Category:
Athletes Passed
1543
Passed By
4927
Net Change
-3384
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18962
5K → 10K566115+451#18962#18511
10K → 15K216141+75#18511#18436
15K → 20K251132+119#18436#18317
20K → Half3244-12#18317#18329
Half → 25K169175-6#18329#18335
25K → 30K171402-231#18335#18566
30K → 20M41672-1668#18566#20234
20M → 21M41405-1401#20234#21635
21M → 35K5261-256#21635#21891
35K → 23M44224-180#21891#22071
23M → 24M21116-95#22071#22166
24M → 40K14160-146#22166#22312
40K → 25.2M1617-1#22312#22313
25.2M → Finish3063-33#22313#22346
TOTALS15434927-3384
📊

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