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BOSTON MARATHON 2023

Marco Lozano Valencia

Bib: 27911•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
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
8:41/mi
27:00
↑ 97↓ 3451.5%
10K· 6.21 mi
8:24/mi
53:07
↑ 79↓ 1380.4%
15K· 9.32 mi
8:22/mi
1:19:08
↑ 67↓ 78
20K· 12.43 mi
8:38/mi
1:45:57
↑ 106↓ 860.1%
Half· 13.11 mi
8:42/mi
1:51:53
↑ 19↓ 370.5%
25K· 15.53 mi
9:10/mi
2:14:06
↑ 66↓ 880.2%
30K· 18.64 mi
10:30/mi
2:46:43
↑ 181↓ 1480.2%
20M
10:19/mi
3:00:44
↑ 64↓ 500.2%
21M
13:31/mi
3:14:15
↑ 106↓ 241.6%
35K· 21.75 mi
9:27/mi
3:21:19
↑ 17↓ 861.7%
23M
10:47/mi
3:34:49
↑ 23↓ 630.6%
24M
10:13/mi
3:45:02
↓ 821.3%
40K· 24.85 mi
13:45/mi
3:56:47
↓ 200.3%
25.2M
11:36/mi
4:00:47
↑ 13↓ 160.2%
Finish· 26.22 mi
10:05/mi
4:11:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:53
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time2:19:11
Pace10:37 /mi
📊Positive Split: 24.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:2827:008:4127:00
8:41
-
10K
6.21 mi12:09:3553:078:3326:07
8:24
-0:17
15K
9.32 mi12:35:361:19:088:2926:01
8:22
-0:02
20K
12.43 mi13:02:251:45:578:3226:49
8:38
+0:16
Half
13.11 mi13:08:211:51:538:325:56
8:42
+0:04
25K
15.53 mi13:30:342:14:068:3822:13
9:10
+0:28
30K
18.64 mi14:03:112:46:438:5732:37
10:30
+1:20
20M
20.00 mi14:17:123:00:449:0214:01
10:19
-0:11
21M
21.00 mi14:30:433:14:159:1513:31
13:31
+3:12
35K
21.75 mi14:37:473:21:199:157:04
9:27
-4:04
23M
23.00 mi14:51:173:34:499:2013:30
10:47
+1:20
24M
24.00 mi15:01:303:45:029:2310:13
10:13
-0:34
40K
24.85 mi15:13:153:56:479:3211:45
13:45
+3:32
25.2M
25.20 mi15:17:154:00:479:334:00
11:36
-2:09
Finish
26.22 mi15:27:324:11:049:3510:17
10:05
-1:31

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

8:22 /mi

Average Pace

9:35 /mi

Slowest Pace

13:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:06

53% of race

Time at Steady Pace

1:27:42

35% of race

Time at Slower Pace

29:16

12% of race

Average Pace: 9:35 /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 mi11:43:2827:008:4127:00
8:41
#18834
10K
6.21 mi12:09:3553:078:3326:07
8:24
#18197
15K
9.32 mi12:35:361:19:088:2926:01
8:22
#17793
20K
12.43 mi13:02:251:45:578:3226:49
8:38
#17738
Half
13.11 mi13:08:211:51:538:325:56
8:42
#17786
25K
15.53 mi13:30:342:14:068:3822:13
9:10
#18165
30K
18.64 mi14:03:112:46:438:5732:37
10:30
#19330
20M
20.00 mi14:17:123:00:449:0214:01
10:19
#19534
21M
21.00 mi14:30:433:14:159:1513:31
13:31
#20157
35K
21.75 mi14:37:473:21:199:157:04
9:27
#20129
23M
23.00 mi14:51:173:34:499:2013:30
10:47
#20269
24M
24.00 mi15:01:303:45:029:2310:13
10:13
#20323
40K
24.85 mi15:13:153:56:479:3211:45
13:45
#20717
25.2M
25.20 mi15:17:154:00:479:334:00
11:36
#20747
Finish
26.22 mi15:27:324:11:049:3510:17
10:05
#20777
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi18834117121171217013(Top 64%)11066(Top 73%)11066(Top 491%)
10K6.21 mi3.10 mi18197+63711532+18011532+18017638(Top 66%)11350(Top 75%)11350(Top 504%)
15K9.32 mi3.11 mi17793+40411371+16111371+16117013(Top 64%)11066(Top 73%)11066(Top 491%)
20K12.43 mi3.11 mi17738+5511349+2211349+2217704(Top 67%)11335(Top 75%)11335(Top 503%)
Half13.11 mi0.68 mi17786-4811367-1811367-1819007(Top 71%)11883(Top 78%)11883(Top 528%)
25K15.53 mi2.42 mi18165-37911512-14511512-14519699(Top 74%)12144(Top 80%)12144(Top 539%)
30K18.64 mi3.11 mi19330-116511975-46311975-46322214(Top 83%)13170(Top 87%)13170(Top 585%)
20M20.00 mi1.36 mi19534-20412041-6612041-6621321(Top 80%)12702(Top 84%)12702(Top 564%)
21M21.00 mi1.00 mi20157-62312291-25012291-25024613(Top 92%)14180(Top 93%)14180(Top 630%)
35K21.75 mi0.75 mi20129+2812277+1412277+1419719(Top 74%)11926(Top 79%)11926(Top 530%)
23M23.00 mi1.25 mi20269-14012329-5212329-5221947(Top 82%)12881(Top 85%)12881(Top 572%)
24M24.00 mi1.00 mi20323-5412345-1612345-1621397(Top 80%)12585(Top 83%)12585(Top 559%)
40K24.85 mi0.85 mi20717-39412501-15612501-15625534(Top 96%)14566(Top 96%)14566(Top 647%)
25.2M25.20 mi0.35 mi20747-3012510-912510-921809(Top 82%)12754(Top 84%)12754(Top 566%)
Finish26.22 mi1.02 mi20777-3012511-112511-122025(Top 83%)12869(Top 85%)12869(Top 571%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

17013

Males

11066

M45-49

11066

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

17638

Males

11350

M45-49

11350

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

17013

Males

11066

M45-49

11066

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

17704

Males

11335

M45-49

11335

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

19007

Males

11883

M45-49

11883

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

19699

Males

12144

M45-49

12144

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

22214

Males

13170

M45-49

13170

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

21321

Males

12702

M45-49

12702

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

24613

Males

14180

M45-49

14180

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19719

Males

11926

M45-49

11926

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

21947

Males

12881

M45-49

12881

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

21397

Males

12585

M45-49

12585

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

25534

Males

14566

M45-49

14566

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21809

Males

12754

M45-49

12754

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

22025

Males

12869

M45-49

12869

Passing Analysis

Category:
Athletes Passed
1704
Passed By
3647
Net Change
-1943
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18834
5K → 10K781144+637#18834#18197
10K → 15K46359+404#18197#17793
15K → 20K188133+55#17793#17738
20K → Half1866-48#17738#17786
Half → 25K45424-379#17786#18165
25K → 30K191184-1165#18165#19330
30K → 20M40244-204#19330#19534
20M → 21M5628-623#19534#20157
21M → 35K5123+28#20157#20129
35K → 23M37177-140#20129#20269
23M → 24M2478-54#20269#20323
24M → 40K3397-394#20323#20717
40K → 25.2M737-30#20717#20747
25.2M → Finish2353-30#20747#20777
TOTALS17043647-1943
📊

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