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BOSTON MARATHON 2025

David Delfino

Bib: 5969•M

ON

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Male)
#0 / 16105
Top 14%
Division (M18-39)
#0 / 5642
Top 32%
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
6:40/mi
20:44
↑ 97↓ 3451.5%
10K· 6.21 mi
6:33/mi
41:06
↑ 79↓ 1380.4%
15K· 9.32 mi
6:33/mi
1:01:26
↑ 67↓ 78
20K· 12.43 mi
6:32/mi
1:21:43
↑ 106↓ 860.1%
Half· 13.11 mi
6:24/mi
1:26:05
↑ 19↓ 370.5%
25K· 15.53 mi
6:36/mi
1:42:04
↑ 66↓ 880.2%
30K· 18.64 mi
6:34/mi
2:02:29
↑ 181↓ 1480.2%
20M
6:28/mi
2:11:16
↑ 64↓ 500.2%
21M
6:36/mi
2:17:52
↑ 106↓ 241.6%
35K· 21.75 mi
6:16/mi
2:22:33
↑ 17↓ 861.7%
23M
6:17/mi
2:30:25
↑ 23↓ 630.6%
24M
6:09/mi
2:36:34
↓ 821.3%
40K· 24.85 mi
6:13/mi
2:41:53
↓ 200.3%
25.2M
6:31/mi
2:44:08
↑ 13↓ 160.2%
Finish· 26.22 mi
5:55/mi
2:50:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:26:05
Pace6:34 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:24:05
Pace6:25 /mi
📊Negative Split: 2.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:1120:446:4020:44
6:40
-
10K
6.21 mi10:46:3341:066:3720:22
6:33
-0:07
15K
9.32 mi11:06:531:01:266:3520:20
6:33
0:00
20K
12.43 mi11:27:101:21:436:3520:17
6:32
-0:01
Half
13.11 mi11:31:321:26:056:344:22
6:24
-0:08
25K
15.53 mi11:47:311:42:046:3415:59
6:36
+0:12
30K
18.64 mi12:07:562:02:296:3420:25
6:34
-0:02
20M
20.00 mi12:16:432:11:166:348:47
6:28
-0:06
21M
21.00 mi12:23:192:17:526:346:36
6:36
+0:08
35K
21.75 mi12:28:002:22:336:334:41
6:16
-0:20
23M
23.00 mi12:35:522:30:256:327:52
6:17
+0:01
24M
24.00 mi12:42:012:36:346:316:09
6:09
-0:08
40K
24.85 mi12:47:202:41:536:315:19
6:13
+0:04
25.2M
25.20 mi12:49:352:44:086:312:15
6:31
+0:18
Finish
26.22 mi12:55:372:50:106:306:02
5:55
-0:36

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

5:55 /mi

Average Pace

6:30 /mi

Slowest Pace

6:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

43:12

25% of race

Time at Steady Pace

2:06:58

75% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:29 /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 mi10:26:1120:446:4020:44
6:40
#5189
10K
6.21 mi10:46:3341:066:3720:22
6:33
#4604
15K
9.32 mi11:06:531:01:266:3520:20
6:33
#4327
20K
12.43 mi11:27:101:21:436:3520:17
6:32
#3979
Half
13.11 mi11:31:321:26:056:344:22
6:24
#3921
25K
15.53 mi11:47:311:42:046:3415:59
6:36
#3815
30K
18.64 mi12:07:562:02:296:3420:25
6:34
#3454
20M
20.00 mi12:16:432:11:166:348:47
6:28
#3226
21M
21.00 mi12:23:192:17:526:346:36
6:36
#3022
35K
21.75 mi12:28:002:22:336:334:41
6:16
#2923
23M
23.00 mi12:35:522:30:256:327:52
6:17
#2743
24M
24.00 mi12:42:012:36:346:316:09
6:09
#2589
40K
24.85 mi12:47:202:41:536:315:19
6:13
#2478
25.2M
25.20 mi12:49:352:44:086:312:15
6:31
#2409
Finish
26.22 mi12:55:372:50:106:306:02
5:55
#2300
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5189483148313823(Top 13%)3607(Top 22%)3607(Top 64%)
10K6.21 mi3.10 mi4604+5854319+5124319+5124096(Top 14%)3850(Top 24%)3850(Top 68%)
15K9.32 mi3.11 mi4327+2774069+2504069+2503823(Top 13%)3607(Top 22%)3607(Top 64%)
20K12.43 mi3.11 mi3979+3483746+3233746+3233277(Top 12%)3104(Top 19%)3104(Top 55%)
Half13.11 mi0.68 mi3921+583691+553691+553008(Top 11%)2869(Top 18%)2869(Top 51%)
25K15.53 mi2.42 mi3815+1063595+963595+963392(Top 12%)3201(Top 20%)3201(Top 57%)
30K18.64 mi3.11 mi3454+3613268+3273268+3272280(Top 8%)2159(Top 13%)2159(Top 38%)
20M20.00 mi1.36 mi3226+2283055+2133055+2131494(Top 5%)1412(Top 9%)1412(Top 25%)
21M21.00 mi1.00 mi3022+2042864+1912864+191926(Top 3%)876(Top 5%)876(Top 16%)
35K21.75 mi0.75 mi2923+992769+952769+951465(Top 5%)1389(Top 9%)1389(Top 25%)
23M23.00 mi1.25 mi2743+1802605+1642605+164851(Top 3%)804(Top 5%)804(Top 14%)
24M24.00 mi1.00 mi2589+1542456+1492456+149902(Top 3%)848(Top 5%)848(Top 15%)
40K24.85 mi0.85 mi2478+1112351+1052351+105777(Top 3%)728(Top 5%)728(Top 13%)
25.2M25.20 mi0.35 mi2409+692286+652286+65514(Top 2%)479(Top 3%)479(Top 8%)
Finish26.22 mi1.02 mi2300+1092183+1032183+103748(Top 3%)704(Top 4%)704(Top 12%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21story building
+97ft-345ft

Overall

3823

Males

3607

M18-39

3607

5K→10K

3.1 - 6.2 mi

Top 14%
×5story building
+79ft-138ft

Overall

4096

Males

3850

M18-39

3850

10K→15K

6.2 - 9.3 mi

Top 13%
×3story building
+67ft-78ft

Overall

3823

Males

3607

M18-39

3607

15K→20K

9.3 - 12.4 mi

Top 12%
×5story building
+106ft-86ft

Overall

3277

Males

3104

M18-39

3104

20K→Half

12.4 - 13.1 mi

Top 11%
×2story building
+19ft-37ft

Overall

3008

Males

2869

M18-39

2869

Half→25K

13.1 - 15.5 mi

Top 12%
×4story building
+66ft-88ft

Overall

3392

Males

3201

M18-39

3201

25K→30K

15.5 - 18.6 mi

Top 8%
×9story building
+181ft-148ft

Overall

2280

Males

2159

M18-39

2159

30K→20M

18.6 - 20.0 mi

Top 5%
×5story building
+64ft-50ft

Overall

1494

Males

1412

M18-39

1412

20M→21M

20.0 - 21.0 mi

Top 3%
×8story building
+106ft-24ft

Overall

926

Males

876

M18-39

876

21M→35K

21.0 - 21.8 mi

Top 5%
×7story building
+17ft-86ft

Overall

1465

Males

1389

M18-39

1389

35K→23M

21.8 - 23.0 mi

Top 3%
×5story building
+23ft-63ft

Overall

851

Males

804

M18-39

804

23M→24M

23.0 - 24.0 mi

Top 3%
×6story building
+12ft-82ft

Overall

902

Males

848

M18-39

848

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

777

Males

728

M18-39

728

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

514

Males

479

M18-39

479

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2story building
+22ft-21ft

Overall

748

Males

704

M18-39

704

Passing Analysis

Category:
Athletes Passed
2969
Passed By
80
Net Change
+2889
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5189
5K → 10K60621+585#5189#4604
10K → 15K29417+277#4604#4327
15K → 20K3535+348#4327#3979
20K → Half591+58#3979#3921
Half → 25K13327+106#3921#3815
25K → 30K3643+361#3815#3454
30K → 20M2280+228#3454#3226
20M → 21M2051+204#3226#3022
21M → 35K1001+99#3022#2923
35K → 23M1800+180#2923#2743
23M → 24M1562+154#2743#2589
24M → 40K1110+111#2589#2478
40K → 25.2M690+69#2478#2409
25.2M → Finish1112+109#2409#2300
TOTALS296980+2889
📊

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