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BOSTON MARATHON 2025

Joaquin Alfaro

Bib: 12234•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 35%
Gender (Male)
#0 / 16105
Top 48%
Masters (Masters Men)
#0 / 10463
Top 37%
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
7:25/mi
23:04
↑ 97↓ 3451.5%
10K· 6.21 mi
7:16/mi
45:40
↑ 79↓ 1380.4%
15K· 9.32 mi
7:17/mi
1:08:18
↑ 67↓ 78
20K· 12.43 mi
7:24/mi
1:31:17
↑ 106↓ 860.1%
Half· 13.11 mi
7:21/mi
1:36:18
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:54:21
↑ 66↓ 880.2%
30K· 18.64 mi
8:21/mi
2:20:16
↑ 181↓ 1480.2%
20M
7:41/mi
2:30:43
↑ 64↓ 500.2%
21M
8:11/mi
2:38:54
↑ 106↓ 241.6%
35K· 21.75 mi
7:34/mi
2:44:34
↑ 17↓ 861.7%
23M
7:48/mi
2:54:20
↑ 23↓ 630.6%
24M
7:38/mi
3:01:58
↓ 821.3%
40K· 24.85 mi
7:43/mi
3:08:34
↓ 200.3%
25.2M
8:27/mi
3:11:29
↑ 13↓ 160.2%
Finish· 26.22 mi
7:36/mi
3:19:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:18
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:42:56
Pace7:51 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:1923:047:2523:04
7:25
-
10K
6.21 mi11:12:5545:407:2122:36
7:16
-0:09
15K
9.32 mi11:35:331:08:187:2022:38
7:17
+0:01
20K
12.43 mi11:58:321:31:177:2122:59
7:24
+0:07
Half
13.11 mi12:03:331:36:187:215:01
7:21
-0:03
25K
15.53 mi12:21:361:54:217:2218:03
7:27
+0:06
30K
18.64 mi12:47:312:20:167:3125:55
8:21
+0:54
20M
20.00 mi12:57:582:30:437:3210:27
7:41
-0:40
21M
21.00 mi13:06:092:38:547:348:11
8:11
+0:30
35K
21.75 mi13:11:492:44:347:345:40
7:34
-0:37
23M
23.00 mi13:21:352:54:207:359:46
7:48
+0:14
24M
24.00 mi13:29:133:01:587:357:38
7:38
-0:10
40K
24.85 mi13:35:493:08:347:356:36
7:43
+0:05
25.2M
25.20 mi13:38:443:11:297:362:55
8:27
+0:44
Finish
26.22 mi13:46:293:19:147:367:45
7:36
-0:51

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

7:16 /mi

Average Pace

7:36 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:13

81% of race

Time at Steady Pace

37:01

19% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:36 /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 mi10:50:1923:047:2523:04
7:25
#11552
10K
6.21 mi11:12:5545:407:2122:36
7:16
#10759
15K
9.32 mi11:35:331:08:187:2022:38
7:17
#10459
20K
12.43 mi11:58:321:31:177:2122:59
7:24
#10261
Half
13.11 mi12:03:331:36:187:215:01
7:21
#10260
25K
15.53 mi12:21:361:54:217:2218:03
7:27
#10104
30K
18.64 mi12:47:312:20:167:3125:55
8:21
#10797
20M
20.00 mi12:57:582:30:437:3210:27
7:41
#10566
21M
21.00 mi13:06:092:38:547:348:11
8:11
#10394
35K
21.75 mi13:11:492:44:347:345:40
7:34
#10342
23M
23.00 mi13:21:352:54:207:359:46
7:48
#10188
24M
24.00 mi13:29:133:01:587:357:38
7:38
#10080
40K
24.85 mi13:35:493:08:347:356:36
7:43
#9965
25.2M
25.20 mi13:38:443:11:297:362:55
8:27
#9929
Finish
26.22 mi13:46:293:19:147:367:45
7:36
#9901
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi11552897389739870(Top 35%)8012(Top 50%)8012(Top 336%)
10K6.21 mi3.10 mi10759+7938546+4278546+42710128(Top 36%)8217(Top 51%)8217(Top 344%)
15K9.32 mi3.11 mi10459+3008377+1698377+1699870(Top 35%)8012(Top 50%)8012(Top 336%)
20K12.43 mi3.11 mi10261+1988241+1368241+1369887(Top 35%)7954(Top 49%)7954(Top 333%)
Half13.11 mi0.68 mi10260+18235+68235+610425(Top 37%)8238(Top 51%)8238(Top 345%)
25K15.53 mi2.42 mi10104+1568115+1208115+1209496(Top 33%)7597(Top 47%)7597(Top 318%)
30K18.64 mi3.11 mi10797-6938406-2918406-29113743(Top 48%)9479(Top 59%)9479(Top 397%)
20M20.00 mi1.36 mi10566+2318250+1568250+1568272(Top 29%)6609(Top 41%)6609(Top 277%)
21M21.00 mi1.00 mi10394+1728130+1208130+1208466(Top 30%)6526(Top 41%)6526(Top 274%)
35K21.75 mi0.75 mi10342+528079+518079+519141(Top 32%)6931(Top 43%)6931(Top 290%)
23M23.00 mi1.25 mi10188+1547957+1227957+1228580(Top 30%)6487(Top 40%)6487(Top 272%)
24M24.00 mi1.00 mi10080+1087872+857872+858643(Top 30%)6463(Top 40%)6463(Top 271%)
40K24.85 mi0.85 mi9965+1157781+917781+918214(Top 29%)6113(Top 38%)6113(Top 256%)
25.2M25.20 mi0.35 mi9929+367748+337748+338529(Top 30%)6214(Top 39%)6214(Top 260%)
Finish26.22 mi1.02 mi9901+287707+417707+419946(Top 35%)6955(Top 43%)6955(Top 291%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

9870

Males

8012

M45-49

8012

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

10128

Males

8217

M45-49

8217

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

9870

Males

8012

M45-49

8012

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9887

Males

7954

M45-49

7954

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

10425

Males

8238

M45-49

8238

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

9496

Males

7597

M45-49

7597

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13743

Males

9479

M45-49

9479

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

8272

Males

6609

M45-49

6609

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

8466

Males

6526

M45-49

6526

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

9141

Males

6931

M45-49

6931

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8580

Males

6487

M45-49

6487

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

8643

Males

6463

M45-49

6463

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8214

Males

6113

M45-49

6113

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8529

Males

6214

M45-49

6214

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9946

Males

6955

M45-49

6955

Passing Analysis

Category:
Athletes Passed
2928*
Passed By
1275
Net Change
+1651
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11552
5K → 10K84249+793#11552#10759
10K → 15K34444+300#10759#10459
15K → 20K27071+198#10459#10261
20K → Half3635+1#10261#10260
Half → 25K22569+156#10260#10104
25K → 30K90782-693#10104#10797
30K → 20M24211+231#10797#10566
20M → 21M20331+172#10566#10394
21M → 35K7826+52#10394#10342
35K → 23M18228+154#10342#10188
23M → 24M13426+108#10188#10080
24M → 40K140*25+115#10080#9965
40K → 25.2M5418+36#9965#9929
25.2M → Finish8860+28#9929#9901
TOTALS2928*1275+1651

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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