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BOSTON MARATHON 2025

Dario Cantu

Bib: 12514•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
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
7:03/mi
21:53
↑ 97↓ 3451.5%
10K· 6.21 mi
7:06/mi
43:55
↑ 79↓ 1380.4%
15K· 9.32 mi
7:02/mi
1:05:46
↑ 67↓ 78
20K· 12.43 mi
7:04/mi
1:27:44
↑ 106↓ 860.1%
Half· 13.11 mi
7:02/mi
1:32:32
↑ 19↓ 370.5%
25K· 15.53 mi
12:57/mi
2:03:57
↑ 66↓ 880.2%
30K· 18.64 mi
10:32/mi
2:36:39
↑ 181↓ 1480.2%
20M
9:25/mi
2:49:27
↑ 64↓ 500.2%
21M
9:17/mi
2:58:44
↑ 106↓ 241.6%
35K· 21.75 mi
8:39/mi
3:05:12
↑ 17↓ 861.7%
23M
8:35/mi
3:15:57
↑ 23↓ 630.6%
24M
8:08/mi
3:24:05
↓ 821.3%
40K· 24.85 mi
7:58/mi
3:30:54
↓ 200.3%
25.2M
8:33/mi
3:33:51
↑ 13↓ 160.2%
Finish· 26.22 mi
7:11/mi
3:41:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:32
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time2:08:38
Pace9:49 /mi
📊Positive Split: 39.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1721:537:0321:53
7:03
-
10K
6.21 mi11:11:1943:557:0422:02
7:06
+0:03
15K
9.32 mi11:33:101:05:467:0321:51
7:02
-0:04
20K
12.43 mi11:55:081:27:447:0421:58
7:04
+0:02
Half
13.11 mi11:59:561:32:327:044:48
7:02
-0:02
25K
15.53 mi12:31:212:03:577:5931:25
12:57
+5:55
30K
18.64 mi13:04:032:36:398:2432:42
10:32
-2:25
20M
20.00 mi13:16:512:49:278:2812:48
9:25
-1:07
21M
21.00 mi13:26:082:58:448:319:17
9:17
-0:08
35K
21.75 mi13:32:363:05:128:316:28
8:39
-0:38
23M
23.00 mi13:43:213:15:578:3110:45
8:35
-0:04
24M
24.00 mi13:51:293:24:058:308:08
8:08
-0:27
40K
24.85 mi13:58:183:30:548:296:49
7:58
-0:10
25.2M
25.20 mi14:01:153:33:518:292:57
8:33
+0:35
Finish
26.22 mi14:08:343:41:108:267:19
7:11
-1:22

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

7:02 /mi

Average Pace

8:26 /mi

Slowest Pace

12:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:51

45% of race

Time at Steady Pace

35:07

16% of race

Time at Slower Pace

1:26:12

39% of race

Average Pace: 8:26 /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 mi10:49:1721:537:0321:53
7:03
#8164
10K
6.21 mi11:11:1943:557:0422:02
7:06
#8417
15K
9.32 mi11:33:101:05:467:0321:51
7:02
#8168
20K
12.43 mi11:55:081:27:447:0421:58
7:04
#7894
Half
13.11 mi11:59:561:32:327:044:48
7:02
#7879
25K
15.53 mi12:31:212:03:577:5931:25
12:57
#15389
30K
18.64 mi13:04:032:36:398:2432:42
10:32
#17491
20M
20.00 mi13:16:512:49:278:2812:48
9:25
#17590
21M
21.00 mi13:26:082:58:448:319:17
9:17
#17434
35K
21.75 mi13:32:363:05:128:316:28
8:39
#17372
23M
23.00 mi13:43:213:15:578:3110:45
8:35
#17143
24M
24.00 mi13:51:293:24:058:308:08
8:08
#16907
40K
24.85 mi13:58:183:30:548:296:49
7:58
#16640
25.2M
25.20 mi14:01:153:33:518:292:57
8:33
#16515
Finish
26.22 mi14:08:343:41:108:267:19
7:11
#16159
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi8164711171117844(Top 28%)6840(Top 42%)6840(Top 287%)
10K6.21 mi3.10 mi8417-2537249-1387249-1388611(Top 30%)7374(Top 46%)7374(Top 309%)
15K9.32 mi3.11 mi8168+2497079+1707079+1707844(Top 28%)6840(Top 42%)6840(Top 287%)
20K12.43 mi3.11 mi7894+2746888+1916888+1917342(Top 26%)6458(Top 40%)6458(Top 271%)
Half13.11 mi0.68 mi7879+156873+156873+157857(Top 28%)6819(Top 42%)6819(Top 286%)
25K15.53 mi2.42 mi15389-751010516-364310516-364327263(Top 96%)15617(Top 97%)15617(Top 655%)
30K18.64 mi3.11 mi17491-210211326-81011326-81022986(Top 81%)13611(Top 85%)13611(Top 570%)
20M20.00 mi1.36 mi17590-9911341-1511341-1518807(Top 66%)11589(Top 72%)11589(Top 486%)
21M21.00 mi1.00 mi17434+15611250+9111250+9115058(Top 53%)9818(Top 61%)9818(Top 411%)
35K21.75 mi0.75 mi17372+6211201+4911201+4916296(Top 57%)10305(Top 64%)10305(Top 432%)
23M23.00 mi1.25 mi17143+22911077+12411077+12413837(Top 49%)9091(Top 56%)9091(Top 381%)
24M24.00 mi1.00 mi16907+23610957+12010957+12012140(Top 43%)8246(Top 51%)8246(Top 346%)
40K24.85 mi0.85 mi16640+26710817+14010817+14010003(Top 35%)7059(Top 44%)7059(Top 296%)
25.2M25.20 mi0.35 mi16515+12510763+5410763+549108(Top 32%)6527(Top 41%)6527(Top 274%)
Finish26.22 mi1.02 mi16159+35610595+16810595+1686935(Top 24%)5301(Top 33%)5301(Top 222%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7844

Males

6840

M45-49

6840

5K→10K

3.1 - 6.2 mi

Top 30%
×5story building
+79ft-138ft

Overall

8611

Males

7374

M45-49

7374

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7844

Males

6840

M45-49

6840

15K→20K

9.3 - 12.4 mi

Top 26%
×5story building
+106ft-86ft

Overall

7342

Males

6458

M45-49

6458

20K→Half

12.4 - 13.1 mi

Top 28%
×2story building
+19ft-37ft

Overall

7857

Males

6819

M45-49

6819

Half→25K

13.1 - 15.5 mi

Top 96%
×4story building
+66ft-88ft

Overall

27263

Males

15617

M45-49

15617

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

22986

Males

13611

M45-49

13611

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

18807

Males

11589

M45-49

11589

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

15058

Males

9818

M45-49

9818

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

16296

Males

10305

M45-49

10305

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

13837

Males

9091

M45-49

9091

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

12140

Males

8246

M45-49

8246

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

10003

Males

7059

M45-49

7059

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9108

Males

6527

M45-49

6527

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6935

Males

5301

M45-49

5301

Passing Analysis

Category:
Athletes Passed
2365
Passed By
10358
Net Change
-7995
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8164
5K → 10K115368-253#8164#8417
10K → 15K29546+249#8417#8168
15K → 20K30026+274#8168#7894
20K → Half3116+15#7894#7879
Half → 25K17509-7510#7879#15389
25K → 30K112113-2102#15389#17491
30K → 20M89188-99#17491#17590
20M → 21M18832+156#17590#17434
21M → 35K9230+62#17434#17372
35K → 23M24819+229#17372#17143
23M → 24M2426+236#17143#16907
24M → 40K2692+267#16907#16640
40K → 25.2M1250+125#16640#16515
25.2M → Finish3593+356#16515#16159
TOTALS236510358-7995
📊

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