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BOSTON MARATHON 2025

Dakota Dalzell

Bib: 1556•M

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 8%
Division (M18-39)
#0 / 5642
Top 19%
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
6:00/mi
18:38
↑ 97↓ 3451.5%
10K· 6.21 mi
5:54/mi
36:59
↑ 79↓ 1380.4%
15K· 9.32 mi
5:54/mi
55:19
↑ 67↓ 78
20K· 12.43 mi
5:57/mi
1:13:47
↑ 106↓ 860.1%
Half· 13.11 mi
5:53/mi
1:17:48
↑ 19↓ 370.5%
25K· 15.53 mi
6:07/mi
1:32:37
↑ 66↓ 880.2%
30K· 18.64 mi
6:29/mi
1:52:47
↑ 181↓ 1480.2%
20M
6:45/mi
2:01:58
↑ 64↓ 500.2%
21M
7:07/mi
2:09:05
↑ 106↓ 241.6%
35K· 21.75 mi
6:28/mi
2:13:55
↑ 17↓ 861.7%
23M
6:48/mi
2:22:26
↑ 23↓ 630.6%
24M
6:46/mi
2:29:12
↓ 821.3%
40K· 24.85 mi
7:01/mi
2:35:12
↓ 200.3%
25.2M
7:47/mi
2:37:53
↑ 13↓ 160.2%
Finish· 26.22 mi
6:47/mi
2:44:48
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:48
Pace5:56 /mi
2nd Half
Distance13.11 mi
Time1:27:00
Pace6:38 /mi
📊Positive Split: 11.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:0918:386:0018:38
6:00
-
10K
6.21 mi10:37:3036:595:5718:21
5:54
-0:06
15K
9.32 mi10:55:5055:195:5618:20
5:54
0:00
20K
12.43 mi11:14:181:13:475:5618:28
5:57
+0:03
Half
13.11 mi11:18:191:17:485:564:01
5:53
-0:04
25K
15.53 mi11:33:081:32:375:5814:49
6:07
+0:14
30K
18.64 mi11:53:181:52:476:0320:10
6:29
+0:22
20M
20.00 mi12:02:292:01:586:069:11
6:45
+0:16
21M
21.00 mi12:09:362:09:056:097:07
7:07
+0:22
35K
21.75 mi12:14:262:13:556:094:50
6:28
-0:39
23M
23.00 mi12:22:572:22:266:128:31
6:48
+0:20
24M
24.00 mi12:29:432:29:126:136:46
6:46
-0:02
40K
24.85 mi12:35:432:35:126:156:00
7:01
+0:15
25.2M
25.20 mi12:38:242:37:536:162:41
7:47
+0:46
Finish
26.22 mi12:45:192:44:486:176:55
6:47
-1:00

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

6:17 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:37

56% of race

Time at Steady Pace

34:11

21% of race

Time at Slower Pace

38:00

23% of race

Average Pace: 6:17 /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 mi10:19:0918:386:0018:38
6:00
#1078
10K
6.21 mi10:37:3036:595:5718:21
5:54
#948
15K
9.32 mi10:55:5055:195:5618:20
5:54
#882
20K
12.43 mi11:14:181:13:475:5618:28
5:57
#827
Half
13.11 mi11:18:191:17:485:564:01
5:53
#823
25K
15.53 mi11:33:081:32:375:5814:49
6:07
#858
30K
18.64 mi11:53:181:52:476:0320:10
6:29
#961
20M
20.00 mi12:02:292:01:586:069:11
6:45
#1042
21M
21.00 mi12:09:362:09:056:097:07
7:07
#1087
35K
21.75 mi12:14:262:13:556:094:50
6:28
#1107
23M
23.00 mi12:22:572:22:266:128:31
6:48
#1147
24M
24.00 mi12:29:432:29:126:136:46
6:46
#1203
40K
24.85 mi12:35:432:35:126:156:00
7:01
#1268
25.2M
25.20 mi12:38:242:37:536:162:41
7:47
#1298
Finish
26.22 mi12:45:192:44:486:176:55
6:47
#1356
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi107810191019762(Top 3%)713(Top 4%)713(Top 13%)
10K6.21 mi3.10 mi948+130891+128891+128843(Top 3%)791(Top 5%)791(Top 14%)
15K9.32 mi3.11 mi882+66828+63828+63762(Top 3%)713(Top 4%)713(Top 13%)
20K12.43 mi3.11 mi827+55776+52776+52729(Top 3%)682(Top 4%)682(Top 12%)
Half13.11 mi0.68 mi823+4772+4772+4831(Top 3%)785(Top 5%)785(Top 14%)
25K15.53 mi2.42 mi858-35806-34806-341135(Top 4%)1071(Top 7%)1071(Top 19%)
30K18.64 mi3.11 mi961-103905-99905-991930(Top 7%)1836(Top 11%)1836(Top 33%)
20M20.00 mi1.36 mi1042-81981-76981-762693(Top 9%)2522(Top 16%)2522(Top 45%)
21M21.00 mi1.00 mi1087-451024-431024-432717(Top 10%)2520(Top 16%)2520(Top 45%)
35K21.75 mi0.75 mi1107-201044-201044-202234(Top 8%)2086(Top 13%)2086(Top 37%)
23M23.00 mi1.25 mi1147-401081-371081-372680(Top 9%)2463(Top 15%)2463(Top 44%)
24M24.00 mi1.00 mi1203-561132-511132-513283(Top 12%)2949(Top 18%)2949(Top 52%)
40K24.85 mi0.85 mi1268-651193-611193-613954(Top 14%)3442(Top 21%)3442(Top 61%)
25.2M25.20 mi0.35 mi1298-301222-291222-294650(Top 16%)3848(Top 24%)3848(Top 68%)
Finish26.22 mi1.02 mi1356-581277-551277-554385(Top 15%)3701(Top 23%)3701(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21story building
+97ft-345ft

Overall

762

Males

713

M18-39

713

5K→10K

3.1 - 6.2 mi

Top 3%
×5story building
+79ft-138ft

Overall

843

Males

791

M18-39

791

10K→15K

6.2 - 9.3 mi

Top 3%
×3story building
+67ft-78ft

Overall

762

Males

713

M18-39

713

15K→20K

9.3 - 12.4 mi

Top 3%
×5story building
+106ft-86ft

Overall

729

Males

682

M18-39

682

20K→Half

12.4 - 13.1 mi

Top 3%
×2story building
+19ft-37ft

Overall

831

Males

785

M18-39

785

Half→25K

13.1 - 15.5 mi

Top 4%
×4story building
+66ft-88ft

Overall

1135

Males

1071

M18-39

1071

25K→30K

15.5 - 18.6 mi

Top 7%
×9story building
+181ft-148ft

Overall

1930

Males

1836

M18-39

1836

30K→20M

18.6 - 20.0 mi

Top 9%
×5story building
+64ft-50ft

Overall

2693

Males

2522

M18-39

2522

20M→21M

20.0 - 21.0 mi

Top 10%
×8story building
+106ft-24ft

Overall

2717

Males

2520

M18-39

2520

21M→35K

21.0 - 21.8 mi

Top 8%
×7story building
+17ft-86ft

Overall

2234

Males

2086

M18-39

2086

35K→23M

21.8 - 23.0 mi

Top 9%
×5story building
+23ft-63ft

Overall

2680

Males

2463

M18-39

2463

23M→24M

23.0 - 24.0 mi

Top 12%
×6story building
+12ft-82ft

Overall

3283

Males

2949

M18-39

2949

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3954

Males

3442

M18-39

3442

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4650

Males

3848

M18-39

3848

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4385

Males

3701

M18-39

3701

Passing Analysis

Category:
Athletes Passed
383
Passed By
661
Net Change
-278
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1078
5K → 10K1344+130#1078#948
10K → 15K704+66#948#882
15K → 20K6510+55#882#827
20K → Half62+4#827#823
Half → 25K1146-35#823#858
25K → 30K16119-103#858#961
30K → 20M1192-81#961#1042
20M → 21M1459-45#1042#1087
21M → 35K626-20#1087#1107
35K → 23M2868-40#1107#1147
23M → 24M763-56#1147#1203
24M → 40K368-65#1203#1268
40K → 25.2M535-30#1268#1298
25.2M → Finish765-58#1298#1356
TOTALS383661-278
📊

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