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BOSTON MARATHON 2023

Alberto Rivera Guzman

Bib: 15112•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
7:48/mi
24:14
↑ 97↓ 3451.5%
10K· 6.21 mi
7:44/mi
48:15
↑ 79↓ 1380.4%
15K· 9.32 mi
8:00/mi
1:13:07
↑ 67↓ 78
20K· 12.43 mi
8:27/mi
1:39:23
↑ 106↓ 860.1%
Half· 13.11 mi
8:12/mi
1:44:59
↑ 19↓ 370.5%
25K· 15.53 mi
8:55/mi
2:06:35
↑ 66↓ 880.2%
30K· 18.64 mi
9:08/mi
2:34:59
↑ 181↓ 1480.2%
20M
9:36/mi
2:48:02
↑ 64↓ 500.2%
21M
10:29/mi
2:58:31
↑ 106↓ 241.6%
35K· 21.75 mi
9:51/mi
3:05:53
↑ 17↓ 861.7%
23M
10:23/mi
3:18:53
↑ 23↓ 630.6%
24M
10:02/mi
3:28:55
↓ 821.3%
40K· 24.85 mi
10:01/mi
3:37:29
↓ 200.3%
25.2M
10:55/mi
3:41:15
↑ 13↓ 160.2%
Finish· 26.22 mi
9:42/mi
3:51:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:59
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time2:06:09
Pace9:37 /mi
📊Positive Split: 20.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:0324:147:4824:14
7:48
-
10K
6.21 mi11:18:0448:157:4624:01
7:44
-0:04
15K
9.32 mi11:42:561:13:077:5124:52
8:00
+0:16
20K
12.43 mi12:09:121:39:238:0026:16
8:27
+0:27
Half
13.11 mi12:14:481:44:598:005:36
8:12
-0:15
25K
15.53 mi12:36:242:06:358:0921:36
8:55
+0:43
30K
18.64 mi13:04:482:34:598:1928:24
9:08
+0:13
20M
20.00 mi13:17:512:48:028:2413:03
9:36
+0:28
21M
21.00 mi13:28:202:58:318:3010:29
10:29
+0:53
35K
21.75 mi13:35:423:05:538:337:22
9:51
-0:38
23M
23.00 mi13:48:423:18:538:3913:00
10:23
+0:32
24M
24.00 mi13:58:443:28:558:4210:02
10:02
-0:21
40K
24.85 mi14:07:183:37:298:458:34
10:01
-0:01
25.2M
25.20 mi14:11:043:41:158:473:46
10:55
+0:54
Finish
26.22 mi14:20:573:51:088:499:53
9:42
-1:13

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

7:44 /mi

Average Pace

8:49 /mi

Slowest Pace

10:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:35

55% of race

Time at Steady Pace

1:17:18

33% of race

Time at Slower Pace

27:15

12% of race

Average Pace: 8:49 /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 mi10:54:0324:147:4824:14
7:48
#12333
10K
6.21 mi11:18:0448:157:4624:01
7:44
#12406
15K
9.32 mi11:42:561:13:077:5124:52
8:00
#13080
20K
12.43 mi12:09:121:39:238:0026:16
8:27
#14079
Half
13.11 mi12:14:481:44:598:005:36
8:12
#14177
25K
15.53 mi12:36:242:06:358:0921:36
8:55
#14976
30K
18.64 mi13:04:482:34:598:1928:24
9:08
#15575
20M
20.00 mi13:17:512:48:028:2413:03
9:36
#15917
21M
21.00 mi13:28:202:58:318:3010:29
10:29
#16201
35K
21.75 mi13:35:423:05:538:337:22
9:51
#16433
23M
23.00 mi13:48:423:18:538:3913:00
10:23
#16857
24M
24.00 mi13:58:443:28:558:4210:02
10:02
#17117
40K
24.85 mi14:07:183:37:298:458:34
10:01
#17294
25.2M
25.20 mi14:11:043:41:158:473:46
10:55
#17388
Finish
26.22 mi14:20:573:51:088:499:53
9:42
#17595
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi123339261926114416(Top 54%)10074(Top 66%)10074(Top 491%)
10K6.21 mi3.10 mi12406-739285-249285-2412508(Top 47%)9341(Top 62%)9341(Top 455%)
15K9.32 mi3.11 mi13080-6749553-2689553-26814416(Top 54%)10074(Top 66%)10074(Top 491%)
20K12.43 mi3.11 mi14079-9999930-3779930-37716566(Top 62%)10862(Top 72%)10862(Top 529%)
Half13.11 mi0.68 mi14177-989975-459975-4515847(Top 60%)10635(Top 70%)10635(Top 518%)
25K15.53 mi2.42 mi14976-79910261-28610261-28618487(Top 69%)11626(Top 77%)11626(Top 567%)
30K18.64 mi3.11 mi15575-59910445-18410445-18417881(Top 67%)11281(Top 74%)11281(Top 550%)
20M20.00 mi1.36 mi15917-34210547-10210547-10219218(Top 72%)11783(Top 78%)11783(Top 574%)
21M21.00 mi1.00 mi16201-28410639-9210639-9219530(Top 73%)11843(Top 78%)11843(Top 577%)
35K21.75 mi0.75 mi16433-23210736-9710736-9720857(Top 78%)12416(Top 82%)12416(Top 605%)
23M23.00 mi1.25 mi16857-42410900-16410900-16421018(Top 79%)12459(Top 82%)12459(Top 607%)
24M24.00 mi1.00 mi17117-26010988-8810988-8820867(Top 78%)12369(Top 82%)12369(Top 603%)
40K24.85 mi0.85 mi17294-17711048-6011048-6019999(Top 75%)11913(Top 78%)11913(Top 581%)
25.2M25.20 mi0.35 mi17388-9411080-3211080-3220238(Top 76%)12027(Top 79%)12027(Top 586%)
Finish26.22 mi1.02 mi17595-20711162-8211162-8220769(Top 78%)12298(Top 81%)12298(Top 599%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

14416

Males

10074

M50-54

10074

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

12508

Males

9341

M50-54

9341

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

14416

Males

10074

M50-54

10074

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

16566

Males

10862

M50-54

10862

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

15847

Males

10635

M50-54

10635

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

18487

Males

11626

M50-54

11626

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17881

Males

11281

M50-54

11281

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

19218

Males

11783

M50-54

11783

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19530

Males

11843

M50-54

11843

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20857

Males

12416

M50-54

12416

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

21018

Males

12459

M50-54

12459

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

20867

Males

12369

M50-54

12369

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

19999

Males

11913

M50-54

11913

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20238

Males

12027

M50-54

12027

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

20769

Males

12298

M50-54

12298

Passing Analysis

Category:
Athletes Passed
600
Passed By
5862
Net Change
-5262
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12333
5K → 10K288361-73#12333#12406
10K → 15K45719-674#12406#13080
15K → 20K351034-999#13080#14079
20K → Half7105-98#14079#14177
Half → 25K31830-799#14177#14976
25K → 30K45644-599#14976#15575
30K → 20M29371-342#15575#15917
20M → 21M27311-284#15917#16201
21M → 35K9241-232#16201#16433
35K → 23M16440-424#16433#16857
23M → 24M17277-260#16857#17117
24M → 40K25202-177#17117#17294
40K → 25.2M10104-94#17294#17388
25.2M → Finish16223-207#17388#17595
TOTALS6005862-5262
📊

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