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BOSTON MARATHON 2025

Alfonso Calzadilla Beunza

Bib: 12847•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 45%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 47%
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:44
Rank: #10529
Start → 5K
22:44 | 7:19/mi
10K· 6.21 mi
46:14
Rank: #11615 (-1086)
5K → 10K
23:30 | 7:34/mi
15K· 9.32 mi
1:10:00
Rank: #12073 (-458)
10K → 15K
23:46 | 7:39/mi
20K· 12.43 mi
1:33:50
Rank: #12089 (-16)
15K → 20K
23:50 | 7:40/mi
Half· 13.11 mi
1:39:03
Rank: #12125 (-36)
20K → Half
5:13 | 7:39/mi
25K· 15.53 mi
1:57:50
Rank: #12050 (+75)
Half → 25K
18:47 | 7:45/mi
30K· 18.64 mi
2:23:04
Rank: #12035 (+15)
25K → 30K
25:14 | 8:07/mi
20M
2:34:06
Rank: #11957 (+78)
30K → 20M
11:02 | 8:07/mi
21M
2:42:44
Rank: #11873 (+84)
20M → 21M
8:38 | 8:38/mi
35K· 21.75 mi
2:48:35
Rank: #11835 (+38)
21M → 35K
5:51 | 7:49/mi
23M
2:58:41
Rank: #11715 (+120)
35K → 23M
10:06 | 8:04/mi
24M
3:07:09
Rank: #11826 (-111)
23M → 24M
8:28 | 8:28/mi
40K· 24.85 mi
3:15:09
Rank: #12116 (-290)
24M → 40K
8:00 | 9:21/mi
25.2M
3:18:46
Rank: #12253 (-137)
40K → 25.2M
3:37 | 10:29/mi
Finish· 26.22 mi
3:28:21
Rank: #12689 (-436)
25.2M → Finish
9:35 | 9:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:03
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:49:18
Pace8:20 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:1522:447:1922:44
7:19
-
10K
6.21 mi11:17:4546:147:2623:30
7:34
+0:15
15K
9.32 mi11:41:311:10:007:3123:46
7:39
+0:05
20K
12.43 mi12:05:211:33:507:3323:50
7:40
+0:01
Half
13.11 mi12:10:341:39:037:335:13
7:39
-0:01
25K
15.53 mi12:29:211:57:507:3518:47
7:45
+0:06
30K
18.64 mi12:54:352:23:047:4025:14
8:07
+0:22
20M
20.00 mi13:05:372:34:067:4211:02
8:07
0:00
21M
21.00 mi13:14:152:42:447:458:38
8:38
+0:31
35K
21.75 mi13:20:062:48:357:455:51
7:49
-0:49
23M
23.00 mi13:30:122:58:417:4610:06
8:04
+0:15
24M
24.00 mi13:38:403:07:097:488:28
8:28
+0:24
40K
24.85 mi13:46:403:15:097:518:00
9:21
+0:53
25.2M
25.20 mi13:50:173:18:467:533:37
10:29
+1:08
Finish
26.22 mi13:59:523:28:217:579:35
9:24
-1:05

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

7:19 /mi

Average Pace

7:57 /mi

Slowest Pace

10:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

46:14

22% of race

Time at Steady Pace

2:12:17

63% of race

Time at Slower Pace

29:50

14% of race

Average Pace: 7:57 /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 mi10:54:1522:447:1922:44
7:19
#10529
10K
6.21 mi11:17:4546:147:2623:30
7:34
#11615
15K
9.32 mi11:41:311:10:007:3123:46
7:39
#12073
20K
12.43 mi12:05:211:33:507:3323:50
7:40
#12089
Half
13.11 mi12:10:341:39:037:335:13
7:39
#12125
25K
15.53 mi12:29:211:57:507:3518:47
7:45
#12050
30K
18.64 mi12:54:352:23:047:4025:14
8:07
#12035
20M
20.00 mi13:05:372:34:067:4211:02
8:07
#11957
21M
21.00 mi13:14:152:42:447:458:38
8:38
#11873
35K
21.75 mi13:20:062:48:357:455:51
7:49
#11835
23M
23.00 mi13:30:122:58:417:4610:06
8:04
#11715
24M
24.00 mi13:38:403:07:097:488:28
8:28
#11826
40K
24.85 mi13:46:403:15:097:518:00
9:21
#12116
25.2M
25.20 mi13:50:173:18:467:533:37
10:29
#12253
Finish
26.22 mi13:59:523:28:217:579:35
9:24
#12689
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi105298458845813034(Top 46%)9533(Top 59%)9533(Top 478%)
10K6.21 mi3.10 mi11615-10868976-5188976-51812686(Top 45%)9459(Top 59%)9459(Top 474%)
15K9.32 mi3.11 mi12073-4589158-1829158-18213034(Top 46%)9533(Top 59%)9533(Top 478%)
20K12.43 mi3.11 mi12089-169137+219137+2112140(Top 43%)9034(Top 56%)9034(Top 453%)
Half13.11 mi0.68 mi12125-369145-89145-812918(Top 45%)9425(Top 59%)9425(Top 472%)
25K15.53 mi2.42 mi12050+759072+739072+7311916(Top 42%)8811(Top 55%)8811(Top 441%)
30K18.64 mi3.11 mi12035+158991+818991+8112246(Top 43%)8801(Top 55%)8801(Top 441%)
20M20.00 mi1.36 mi11957+788918+738918+7311238(Top 40%)8157(Top 51%)8157(Top 409%)
21M21.00 mi1.00 mi11873+848837+818837+8111273(Top 40%)8017(Top 50%)8017(Top 402%)
35K21.75 mi0.75 mi11835+388795+428795+4210974(Top 39%)7857(Top 49%)7857(Top 394%)
23M23.00 mi1.25 mi11715+1208696+998696+9910509(Top 37%)7489(Top 47%)7489(Top 375%)
24M24.00 mi1.00 mi11826-1118713-178713-1714264(Top 50%)9263(Top 58%)9263(Top 464%)
40K24.85 mi0.85 mi12116-2908823-1108823-11018074(Top 64%)10863(Top 67%)10863(Top 544%)
25.2M25.20 mi0.35 mi12253-1378877-548877-5418900(Top 67%)11255(Top 70%)11255(Top 564%)
Finish26.22 mi1.02 mi12689-4369053-1769053-17620804(Top 73%)12184(Top 76%)12184(Top 610%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

13034

Males

9533

M50-54

9533

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

12686

Males

9459

M50-54

9459

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

13034

Males

9533

M50-54

9533

15K→20K

9.3 - 12.4 mi

Top 43%
×5stories
+106ft-86ft

Overall

12140

Males

9034

M50-54

9034

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

12918

Males

9425

M50-54

9425

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

11916

Males

8811

M50-54

8811

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

12246

Males

8801

M50-54

8801

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

11238

Males

8157

M50-54

8157

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

11273

Males

8017

M50-54

8017

21M→35K

21.0 - 21.8 mi

Top 39%
×7stories
+17ft-86ft

Overall

10974

Males

7857

M50-54

7857

35K→23M

21.8 - 23.0 mi

Top 37%
×5stories
+23ft-63ft

Overall

10509

Males

7489

M50-54

7489

23M→24M

23.0 - 24.0 mi

Top 50%
×6stories
+12ft-82ft

Overall

14264

Males

9263

M50-54

9263

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18074

Males

10863

M50-54

10863

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

18900

Males

11255

M50-54

11255

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

20804

Males

12184

M50-54

12184

Passing Analysis

Category:
Athletes Passed
1389
Passed By
3549
Net Change
-2160
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10529
5K → 10K341120-1086#10529#11615
10K → 15K71529-458#11615#12073
15K → 20K184200-16#12073#12089
20K → Half2662-36#12089#12125
Half → 25K198123+75#12125#12050
25K → 30K250235+15#12050#12035
30K → 20M15173+78#12035#11957
20M → 21M14258+84#11957#11873
21M → 35K6830+38#11873#11835
35K → 23M16949+120#11835#11715
23M → 24M53164-111#11715#11826
24M → 40K19309-290#11826#12116
40K → 25.2M11148-137#12116#12253
25.2M → Finish13449-436#12253#12689
TOTALS13893549-2160
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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