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BOSTON MARATHON 2025

Antonio Diaz-Calderon

Bib: 18439•M

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
7:59/mi
24:49
↑ 97↓ 3451.5%
10K· 6.21 mi
8:02/mi
49:45
↑ 79↓ 1380.4%
15K· 9.32 mi
8:03/mi
1:14:47
↑ 67↓ 78
20K· 12.43 mi
8:23/mi
1:40:49
↑ 106↓ 860.1%
Half· 13.11 mi
8:14/mi
1:46:26
↑ 19↓ 370.5%
25K· 15.53 mi
8:49/mi
2:07:48
↑ 66↓ 880.2%
30K· 18.64 mi
10:19/mi
2:39:51
↑ 181↓ 1480.2%
20M
10:21/mi
2:53:55
↑ 64↓ 500.2%
21M
11:27/mi
3:05:22
↑ 106↓ 241.6%
35K· 21.75 mi
13:46/mi
3:15:40
↑ 17↓ 861.7%
23M
13:32/mi
3:32:37
↑ 23↓ 630.6%
24M
12:34/mi
3:45:11
↓ 821.3%
40K· 24.85 mi
11:37/mi
3:55:07
↓ 200.3%
25.2M
12:57/mi
3:59:35
↑ 13↓ 160.2%
Finish· 26.22 mi
9:27/mi
4:09:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:26
Pace8:07 /mi
2nd Half
Distance13.11 mi
Time2:22:47
Pace10:54 /mi
📊Positive Split: 34.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0524:497:5924:49
7:59
-
10K
6.21 mi11:41:0149:458:0024:56
8:02
+0:03
15K
9.32 mi12:06:031:14:478:0125:02
8:03
+0:01
20K
12.43 mi12:32:051:40:498:0726:02
8:23
+0:20
Half
13.11 mi12:37:421:46:268:075:37
8:14
-0:09
25K
15.53 mi12:59:042:07:488:1421:22
8:49
+0:35
30K
18.64 mi13:31:072:39:518:3532:03
10:19
+1:30
20M
20.00 mi13:45:112:53:558:4214:04
10:21
+0:02
21M
21.00 mi13:56:383:05:228:5011:27
11:27
+1:06
35K
21.75 mi14:06:563:15:409:0010:18
13:46
+2:19
23M
23.00 mi14:23:533:32:379:1516:57
13:32
-0:14
24M
24.00 mi14:36:273:45:119:2312:34
12:34
-0:58
40K
24.85 mi14:46:233:55:079:289:56
11:37
-0:57
25.2M
25.20 mi14:50:513:59:359:304:28
12:57
+1:20
Finish
26.22 mi15:00:294:09:139:319:38
9:27
-3:30

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

7:59 /mi

Average Pace

9:31 /mi

Slowest Pace

13:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:48

51% of race

Time at Steady Pace

55:45

22% of race

Time at Slower Pace

1:05:40

26% of race

Average Pace: 9:30 /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 mi11:16:0524:497:5924:49
7:59
#16479
10K
6.21 mi11:41:0149:458:0024:56
8:02
#16573
15K
9.32 mi12:06:031:14:478:0125:02
8:03
#16504
20K
12.43 mi12:32:051:40:498:0726:02
8:23
#16774
Half
13.11 mi12:37:421:46:268:075:37
8:14
#16804
25K
15.53 mi12:59:042:07:488:1421:22
8:49
#17123
30K
18.64 mi13:31:072:39:518:3532:03
10:19
#18608
20M
20.00 mi13:45:112:53:558:4214:04
10:21
#19008
21M
21.00 mi13:56:383:05:228:5011:27
11:27
#19322
35K
21.75 mi14:06:563:15:409:0010:18
13:46
#20105
23M
23.00 mi14:23:533:32:379:1516:57
13:32
#21007
24M
24.00 mi14:36:273:45:119:2312:34
12:34
#21438
40K
24.85 mi14:46:233:55:079:289:56
11:37
#21590
25.2M
25.20 mi14:50:513:59:359:304:28
12:57
#21682
Finish
26.22 mi15:00:294:09:139:319:38
9:27
#21633
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi16479109971099716464(Top 58%)11007(Top 68%)11007(Top 668%)
10K6.21 mi3.10 mi16573-9411046-4911046-4916672(Top 59%)11100(Top 69%)11100(Top 674%)
15K9.32 mi3.11 mi16504+6911020+2611020+2616464(Top 58%)11007(Top 68%)11007(Top 668%)
20K12.43 mi3.11 mi16774-27011121-10111121-10117432(Top 61%)11368(Top 71%)11368(Top 690%)
Half13.11 mi0.68 mi16804-3011147-2611147-2617481(Top 62%)11420(Top 71%)11420(Top 693%)
25K15.53 mi2.42 mi17123-31911236-8911236-8918991(Top 67%)11970(Top 74%)11970(Top 726%)
30K18.64 mi3.11 mi18608-148511834-59811834-59822494(Top 79%)13392(Top 83%)13392(Top 813%)
20M20.00 mi1.36 mi19008-40011971-13711971-13722003(Top 77%)13054(Top 81%)13054(Top 792%)
21M21.00 mi1.00 mi19322-31412079-10812079-10822516(Top 79%)13208(Top 82%)13208(Top 801%)
35K21.75 mi0.75 mi20105-78312400-32112400-32127546(Top 97%)15595(Top 97%)15595(Top 946%)
23M23.00 mi1.25 mi21007-90212787-38712787-38726909(Top 95%)15284(Top 95%)15284(Top 927%)
24M24.00 mi1.00 mi21438-43112968-18112968-18126388(Top 93%)15004(Top 93%)15004(Top 910%)
40K24.85 mi0.85 mi21590-15213008-4013008-4024328(Top 86%)13927(Top 86%)13927(Top 845%)
25.2M25.20 mi0.35 mi21682-9213029-2113029-2124949(Top 88%)14221(Top 88%)14221(Top 863%)
Finish26.22 mi1.02 mi21633+4913001+2813001+2821009(Top 74%)12297(Top 76%)12297(Top 746%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

16464

Males

11007

M55-59

11007

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16672

Males

11100

M55-59

11100

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

16464

Males

11007

M55-59

11007

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17432

Males

11368

M55-59

11368

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17481

Males

11420

M55-59

11420

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

18991

Males

11970

M55-59

11970

25K→30K

15.5 - 18.6 mi

Top 79%
×9story building
+181ft-148ft

Overall

22494

Males

13392

M55-59

13392

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

22003

Males

13054

M55-59

13054

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22516

Males

13208

M55-59

13208

21M→35K

21.0 - 21.8 mi

Top 97%
×7story building
+17ft-86ft

Overall

27546

Males

15595

M55-59

15595

35K→23M

21.8 - 23.0 mi

Top 95%
×5story building
+23ft-63ft

Overall

26909

Males

15284

M55-59

15284

23M→24M

23.0 - 24.0 mi

Top 93%
×6story building
+12ft-82ft

Overall

26388

Males

15004

M55-59

15004

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24328

Males

13927

M55-59

13927

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

24949

Males

14221

M55-59

14221

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

21009

Males

12297

M55-59

12297

Passing Analysis

Category:
Athletes Passed
931
Passed By
6085
Net Change
-5154
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16479
5K → 10K264358-94#16479#16573
10K → 15K238169+69#16573#16504
15K → 20K123393-270#16504#16774
20K → Half3060-30#16774#16804
Half → 25K70389-319#16804#17123
25K → 30K301515-1485#17123#18608
30K → 20M30430-400#18608#19008
20M → 21M33347-314#19008#19322
21M → 35K2785-783#19322#20105
35K → 23M9911-902#20105#21007
23M → 24M4435-431#21007#21438
24M → 40K20172-152#21438#21590
40K → 25.2M799-92#21590#21682
25.2M → Finish7122+49#21682#21633
TOTALS9316085-5154
📊

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