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BOSTON MARATHON 2025

Boris Calderón De Dios

Bib: 1139 M MX

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 6%
Division (M18-39)
#0 / 5642
Top 15%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
5:58/mi
18:33
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:00/mi
37:13
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:04/mi
56:03
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:01/mi
1:14:46
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
5:59/mi
1:18:51
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:02/mi
1:33:29
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
6:12/mi
1:52:45
↑ 181↓ 1480.2%
138 ft elev
20M
6:20/mi
2:01:22
↑ 64↓ 500.2%
148 ft elev
21M
6:53/mi
2:08:15
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
6:18/mi
2:12:58
↑ 17↓ 861.7%
156 ft elev
23M
6:31/mi
2:21:08
↑ 23↓ 630.6%
116 ft elev
24M
6:26/mi
2:27:34
↓ 821.3%
34 ft elev
40K· 24.85 mi
6:42/mi
2:33:18
↓ 200.3%
20 ft elev
25.2M
7:21/mi
2:35:50
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:40/mi
2:42:38
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:51
Pace6:01 /mi
2nd Half
Distance13.11 mi
Time1:23:47
Pace6:23 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:3618:335:5818:33
5:58
-
10K
6.21 mi10:37:1637:135:5918:40
6:00
+0:02
15K
9.32 mi10:56:0656:036:0118:50
6:04
+0:04
20K
12.43 mi11:14:491:14:466:0118:43
6:01
-0:03
Half
13.11 mi11:18:541:18:516:014:05
5:59
-0:02
25K
15.53 mi11:33:321:33:296:0114:38
6:02
+0:03
30K
18.64 mi11:52:481:52:456:0319:16
6:12
+0:10
20M
20.00 mi12:01:252:01:226:048:37
6:20
+0:08
21M
21.00 mi12:08:182:08:156:066:53
6:53
+0:33
35K
21.75 mi12:13:012:12:586:074:43
6:18
-0:35
23M
23.00 mi12:21:112:21:086:088:10
6:31
+0:13
24M
24.00 mi12:27:372:27:346:096:26
6:26
-0:05
40K
24.85 mi12:33:212:33:186:105:44
6:42
+0:16
25.2M
25.20 mi12:35:532:35:506:112:32
7:21
+0:39
Finish
26.22 mi12:42:412:42:386:126:48
6:40
-0:41

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

5:58 /mi

Average Pace

6:12 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:29

57% of race

Time at Steady Pace

39:02

24% of race

Time at Slower Pace

30:07

19% of race

Average Pace: 6:12 /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 mi10:18:3618:335:5818:33
5:58
#986
10K
6.21 mi10:37:1637:135:5918:40
6:00
#1036
15K
9.32 mi10:56:0656:036:0118:50
6:04
#1088
20K
12.43 mi11:14:491:14:466:0118:43
6:01
#1035
Half
13.11 mi11:18:541:18:516:014:05
5:59
#1033
25K
15.53 mi11:33:321:33:296:0114:38
6:02
#1003
30K
18.64 mi11:52:481:52:456:0319:16
6:12
#958
20M
20.00 mi12:01:252:01:226:048:37
6:20
#940
21M
21.00 mi12:08:182:08:156:066:53
6:53
#971
35K
21.75 mi12:13:012:12:586:074:43
6:18
#965
23M
23.00 mi12:21:112:21:086:088:10
6:31
#967
24M
24.00 mi12:27:372:27:346:096:26
6:26
#989
40K
24.85 mi12:33:212:33:186:105:44
6:42
#1009
25.2M
25.20 mi12:35:532:35:506:112:32
7:21
#1023
Finish
26.22 mi12:42:412:42:386:126:48
6:40
#1076
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9869279271233(Top 4%)1169(Top 7%)1169(Top 21%)
10K6.21 mi3.10 mi1036-50976-49976-491117(Top 4%)1055(Top 7%)1055(Top 19%)
15K9.32 mi3.11 mi1088-521027-511027-511233(Top 4%)1169(Top 7%)1169(Top 21%)
20K12.43 mi3.11 mi1035+53975+52975+52934(Top 3%)880(Top 5%)880(Top 16%)
Half13.11 mi0.68 mi1033+2973+2973+21098(Top 4%)1040(Top 6%)1040(Top 18%)
25K15.53 mi2.42 mi1003+30945+28945+28897(Top 3%)844(Top 5%)844(Top 15%)
30K18.64 mi3.11 mi958+45903+42903+42918(Top 3%)862(Top 5%)862(Top 15%)
20M20.00 mi1.36 mi940+18884+19884+191068(Top 4%)1007(Top 6%)1007(Top 18%)
21M21.00 mi1.00 mi971-31914-30914-301796(Top 6%)1691(Top 10%)1691(Top 30%)
35K21.75 mi0.75 mi965+6908+6908+61593(Top 6%)1493(Top 9%)1493(Top 26%)
23M23.00 mi1.25 mi967-2909-1909-11516(Top 5%)1420(Top 9%)1420(Top 25%)
24M24.00 mi1.00 mi989-22931-22931-221772(Top 6%)1648(Top 10%)1648(Top 29%)
40K24.85 mi0.85 mi1009-20949-18949-182350(Top 8%)2147(Top 13%)2147(Top 38%)
25.2M25.20 mi0.35 mi1023-14962-13962-132645(Top 9%)2347(Top 15%)2347(Top 42%)
Finish26.22 mi1.02 mi1076-531013-511013-513690(Top 13%)3195(Top 20%)3195(Top 57%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21story building
+97ft-345ft

Overall

1233

Males

1169

M18-39

1169

5K→10K

3.1 - 6.2 mi

Top 4%
×5story building
+79ft-138ft

Overall

1117

Males

1055

M18-39

1055

10K→15K

6.2 - 9.3 mi

Top 4%
×3story building
+67ft-78ft

Overall

1233

Males

1169

M18-39

1169

15K→20K

9.3 - 12.4 mi

Top 3%
×5story building
+106ft-86ft

Overall

934

Males

880

M18-39

880

20K→Half

12.4 - 13.1 mi

Top 4%
×2story building
+19ft-37ft

Overall

1098

Males

1040

M18-39

1040

Half→25K

13.1 - 15.5 mi

Top 3%
×4story building
+66ft-88ft

Overall

897

Males

844

M18-39

844

25K→30K

15.5 - 18.6 mi

Top 3%
×9story building
+181ft-148ft

Overall

918

Males

862

M18-39

862

30K→20M

18.6 - 20.0 mi

Top 4%
×5story building
+64ft-50ft

Overall

1068

Males

1007

M18-39

1007

20M→21M

20.0 - 21.0 mi

Top 6%
×8story building
+106ft-24ft

Overall

1796

Males

1691

M18-39

1691

21M→35K

21.0 - 21.8 mi

Top 6%
×7story building
+17ft-86ft

Overall

1593

Males

1493

M18-39

1493

35K→23M

21.8 - 23.0 mi

Top 5%
×5story building
+23ft-63ft

Overall

1516

Males

1420

M18-39

1420

23M→24M

23.0 - 24.0 mi

Top 6%
×6story building
+12ft-82ft

Overall

1772

Males

1648

M18-39

1648

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2350

Males

2147

M18-39

2147

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2645

Males

2347

M18-39

2347

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2story building
+22ft-21ft

Overall

3690

Males

3195

M18-39

3195

Passing Analysis

Category:
Athletes Passed
343
Passed By
433
Net Change
-90
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#986
5K → 10K2878-50#986#1036
10K → 15K1870-52#1036#1088
15K → 20K6411+53#1088#1035
20K → Half86+2#1035#1033
Half → 25K399+30#1033#1003
25K → 30K6520+45#1003#958
30K → 20M3618+18#958#940
20M → 21M1445-31#940#971
21M → 35K1610+6#971#965
35K → 23M2729-2#965#967
23M → 24M830-22#967#989
24M → 40K828-20#989#1009
40K → 25.2M620-14#1009#1023
25.2M → Finish659-53#1023#1076
TOTALS343433-90
📊

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