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BOSTON MARATHON 2025

Luis Alonso

Bib: 11828•M

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 30%
Gender (Male)
#0 / 16105
Top 43%
Masters (Masters Men)
#0 / 10463
Top 31%
Division (M45-49)
#0 / 2386
Top 44%
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
7:22/mi
22:53
↑ 97↓ 3451.5%
10K· 6.21 mi
7:20/mi
45:40
↑ 79↓ 1380.4%
15K· 9.32 mi
7:21/mi
1:08:31
↑ 67↓ 78
20K· 12.43 mi
7:23/mi
1:31:27
↑ 106↓ 860.1%
Half· 13.11 mi
7:23/mi
1:36:29
↑ 19↓ 370.5%
25K· 15.53 mi
7:23/mi
1:54:23
↑ 66↓ 880.2%
30K· 18.64 mi
7:32/mi
2:17:48
↑ 181↓ 1480.2%
20M
7:33/mi
2:28:03
↑ 64↓ 500.2%
21M
8:03/mi
2:36:06
↑ 106↓ 241.6%
35K· 21.75 mi
7:14/mi
2:41:31
↑ 17↓ 861.7%
23M
7:30/mi
2:50:55
↑ 23↓ 630.6%
24M
7:22/mi
2:58:17
↓ 821.3%
40K· 24.85 mi
7:30/mi
3:04:42
↓ 200.3%
25.2M
8:13/mi
3:07:32
↑ 13↓ 160.2%
Finish· 26.22 mi
7:05/mi
3:14:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:29
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:38:16
Pace7:30 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:5722:537:2222:53
7:22
-
10K
6.21 mi11:12:4445:407:2122:47
7:20
-0:02
15K
9.32 mi11:35:351:08:317:2122:51
7:21
+0:01
20K
12.43 mi11:58:311:31:277:2222:56
7:23
+0:02
Half
13.11 mi12:03:331:36:297:225:02
7:23
0:00
25K
15.53 mi12:21:271:54:237:2217:54
7:23
0:00
30K
18.64 mi12:44:522:17:487:2423:25
7:32
+0:09
20M
20.00 mi12:55:072:28:037:2410:15
7:33
+0:01
21M
21.00 mi13:03:102:36:067:268:03
8:03
+0:30
35K
21.75 mi13:08:352:41:317:265:25
7:14
-0:49
23M
23.00 mi13:17:592:50:557:269:24
7:30
+0:16
24M
24.00 mi13:25:212:58:177:267:22
7:22
-0:08
40K
24.85 mi13:31:463:04:427:266:25
7:30
+0:08
25.2M
25.20 mi13:34:363:07:327:272:50
8:13
+0:43
Finish
26.22 mi13:41:493:14:457:267:13
7:05
-1:08

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

7:05 /mi

Average Pace

7:26 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:52

94% of race

Time at Steady Pace

10:53

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:26 /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 mi10:49:5722:537:2222:53
7:22
#10984
10K
6.21 mi11:12:4445:407:2122:47
7:20
#10755
15K
9.32 mi11:35:351:08:317:2122:51
7:21
#10641
20K
12.43 mi11:58:311:31:277:2222:56
7:23
#10378
Half
13.11 mi12:03:331:36:297:225:02
7:23
#10383
25K
15.53 mi12:21:271:54:237:2217:54
7:23
#10115
30K
18.64 mi12:44:522:17:487:2423:25
7:32
#9633
20M
20.00 mi12:55:072:28:037:2410:15
7:33
#9398
21M
21.00 mi13:03:102:36:067:268:03
8:03
#9252
35K
21.75 mi13:08:352:41:317:265:25
7:14
#9137
23M
23.00 mi13:17:592:50:557:269:24
7:30
#8923
24M
24.00 mi13:25:212:58:177:267:22
7:22
#8763
40K
24.85 mi13:31:463:04:427:266:25
7:30
#8636
25.2M
25.20 mi13:34:363:07:327:272:50
8:13
#8587
Finish
26.22 mi13:41:493:14:457:267:13
7:05
#8464
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi109848680868010427(Top 37%)8309(Top 52%)8309(Top 348%)
10K6.21 mi3.10 mi10755+2298542+1388542+13810590(Top 37%)8451(Top 52%)8451(Top 354%)
15K9.32 mi3.11 mi10641+1148459+838459+8310427(Top 37%)8309(Top 52%)8309(Top 348%)
20K12.43 mi3.11 mi10378+2638306+1538306+1539712(Top 34%)7851(Top 49%)7851(Top 329%)
Half13.11 mi0.68 mi10383-58300+68300+610589(Top 37%)8311(Top 52%)8311(Top 348%)
25K15.53 mi2.42 mi10115+2688122+1788122+1788999(Top 32%)7335(Top 46%)7335(Top 307%)
30K18.64 mi3.11 mi9633+4827810+3127810+3128004(Top 28%)6590(Top 41%)6590(Top 276%)
20M20.00 mi1.36 mi9398+2357650+1607650+1607303(Top 26%)6027(Top 37%)6027(Top 253%)
21M21.00 mi1.00 mi9252+1467538+1127538+1127626(Top 27%)6044(Top 38%)6044(Top 253%)
35K21.75 mi0.75 mi9137+1157453+857453+856862(Top 24%)5621(Top 35%)5621(Top 236%)
23M23.00 mi1.25 mi8923+2147287+1667287+1666661(Top 23%)5402(Top 34%)5402(Top 226%)
24M24.00 mi1.00 mi8763+1607164+1237164+1236832(Top 24%)5431(Top 34%)5431(Top 228%)
40K24.85 mi0.85 mi8636+1277049+1157049+1156829(Top 24%)5334(Top 33%)5334(Top 224%)
25.2M25.20 mi0.35 mi8587+497008+417008+417130(Top 25%)5420(Top 34%)5420(Top 227%)
Finish26.22 mi1.02 mi8464+1236916+926916+926260(Top 22%)4903(Top 30%)4903(Top 205%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

10427

Males

8309

M45-49

8309

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

10590

Males

8451

M45-49

8451

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

10427

Males

8309

M45-49

8309

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9712

Males

7851

M45-49

7851

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

10589

Males

8311

M45-49

8311

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8999

Males

7335

M45-49

7335

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

8004

Males

6590

M45-49

6590

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

7303

Males

6027

M45-49

6027

20M→21M

20.0 - 21.0 mi

Top 27%
×8story building
+106ft-24ft

Overall

7626

Males

6044

M45-49

6044

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6862

Males

5621

M45-49

5621

35K→23M

21.8 - 23.0 mi

Top 23%
×5story building
+23ft-63ft

Overall

6661

Males

5402

M45-49

5402

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6832

Males

5431

M45-49

5431

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6829

Males

5334

M45-49

5334

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7130

Males

5420

M45-49

5420

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

6260

Males

4903

M45-49

4903

Passing Analysis

Category:
Athletes Passed
3054*
Passed By
534
Net Change
+2520
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10984
5K → 10K393164+229#10984#10755
10K → 15K219105+114#10755#10641
15K → 20K31249+263#10641#10378
20K → Half2934-5#10378#10383
Half → 25K30537+268#10383#10115
25K → 30K510*28+482#10115#9633
30K → 20M2416+235#9633#9398
20M → 21M17024+146#9398#9252
21M → 35K1227+115#9252#9137
35K → 23M22915+214#9137#8923
23M → 24M17616+160#8923#8763
24M → 40K14720+127#8763#8636
40K → 25.2M6213+49#8636#8587
25.2M → Finish13916+123#8587#8464
TOTALS3054*534+2520

* 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