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BOSTON MARATHON 2023

Carlos Loaiza

Bib: 15163•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
9:03/mi
28:07
↑ 97↓ 3451.5%
10K· 6.21 mi
10:04/mi
59:24
↑ 79↓ 1380.4%
15K· 9.32 mi
9:12/mi
1:27:59
↑ 67↓ 78
20K· 12.43 mi
8:56/mi
1:55:45
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
2:01:39
↑ 19↓ 370.5%
25K· 15.53 mi
8:59/mi
2:23:25
↑ 66↓ 880.2%
30K· 18.64 mi
9:39/mi
2:53:23
↑ 181↓ 1480.2%
20M
10:10/mi
3:07:11
↑ 64↓ 500.2%
21M
10:10/mi
3:17:21
↑ 106↓ 241.6%
35K· 21.75 mi
9:15/mi
3:24:16
↑ 17↓ 861.7%
23M
9:48/mi
3:36:32
↑ 23↓ 630.6%
24M
9:36/mi
3:46:08
↓ 821.3%
40K· 24.85 mi
10:12/mi
3:54:51
↓ 200.3%
25.2M
15:16/mi
4:00:07
↑ 13↓ 160.2%
Finish· 26.22 mi
10:11/mi
4:10:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:39
Pace9:17 /mi
2nd Half
Distance13.11 mi
Time2:08:51
Pace9:50 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:3428:079:0328:07
9:03
-
10K
6.21 mi11:29:5159:249:3431:17
10:04
+1:01
15K
9.32 mi11:58:261:27:599:2628:35
9:12
-0:52
20K
12.43 mi12:26:121:55:459:1927:46
8:56
-0:16
Half
13.11 mi12:32:062:01:399:175:54
8:39
-0:17
25K
15.53 mi12:53:522:23:259:1421:46
8:59
+0:20
30K
18.64 mi13:23:502:53:239:1829:58
9:39
+0:40
20M
20.00 mi13:37:383:07:119:2213:48
10:10
+0:31
21M
21.00 mi13:47:483:17:219:2410:10
10:10
0:00
35K
21.75 mi13:54:433:24:169:246:55
9:15
-0:55
23M
23.00 mi14:06:593:36:329:2512:16
9:48
+0:33
24M
24.00 mi14:16:353:46:089:259:36
9:36
-0:12
40K
24.85 mi14:25:183:54:519:278:43
10:12
+0:36
25.2M
25.20 mi14:30:344:00:079:325:16
15:16
+5:04
Finish
26.22 mi14:40:574:10:309:3410:23
10:11
-5:05

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

8:39 /mi

Average Pace

9:34 /mi

Slowest Pace

15:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

5:54

2% of race

Time at Steady Pace

3:59:20

96% of race

Time at Slower Pace

5:16

2% of race

Average Pace: 9:33 /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 mi10:58:3428:079:0328:07
9:03
#20660
10K
6.21 mi11:29:5159:249:3431:17
10:04
#22489
15K
9.32 mi11:58:261:27:599:2628:35
9:12
#22112
20K
12.43 mi12:26:121:55:459:1927:46
8:56
#21547
Half
13.11 mi12:32:062:01:399:175:54
8:39
#21437
25K
15.53 mi12:53:522:23:259:1421:46
8:59
#21065
30K
18.64 mi13:23:502:53:239:1829:58
9:39
#20826
20M
20.00 mi13:37:383:07:119:2213:48
10:10
#20827
21M
21.00 mi13:47:483:17:219:2410:10
10:10
#20675
35K
21.75 mi13:54:433:24:169:246:55
9:15
#20608
23M
23.00 mi14:06:593:36:329:2512:16
9:48
#20511
24M
24.00 mi14:16:353:46:089:259:36
9:36
#20467
40K
24.85 mi14:25:183:54:519:278:43
10:12
#20448
25.2M
25.20 mi14:30:344:00:079:325:16
15:16
#20659
Finish
26.22 mi14:40:574:10:309:3410:23
10:11
#20712
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi20660124361243621298(Top 80%)12878(Top 85%)12878(Top 628%)
10K6.21 mi3.10 mi22489-182913370-93413370-93423827(Top 90%)14008(Top 92%)14008(Top 683%)
15K9.32 mi3.11 mi22112+37713192+17813192+17821298(Top 80%)12878(Top 85%)12878(Top 628%)
20K12.43 mi3.11 mi21547+56512945+24712945+24719399(Top 73%)12057(Top 79%)12057(Top 588%)
Half13.11 mi0.68 mi21437+11012904+4112904+4118601(Top 70%)11762(Top 78%)11762(Top 573%)
25K15.53 mi2.42 mi21065+37212745+15912745+15918845(Top 71%)11784(Top 78%)11784(Top 574%)
30K18.64 mi3.11 mi20826+23912630+11512630+11519955(Top 75%)12193(Top 80%)12193(Top 594%)
20M20.00 mi1.36 mi20827-112611+1912611+1920910(Top 79%)12525(Top 83%)12525(Top 610%)
21M21.00 mi1.00 mi20675+15212533+7812533+7818577(Top 70%)11453(Top 75%)11453(Top 558%)
35K21.75 mi0.75 mi20608+6712492+4112492+4118922(Top 71%)11557(Top 76%)11557(Top 563%)
23M23.00 mi1.25 mi20511+9712432+6012432+6019422(Top 73%)11762(Top 78%)11762(Top 573%)
24M24.00 mi1.00 mi20467+4412402+3012402+3019559(Top 73%)11797(Top 78%)11797(Top 575%)
40K24.85 mi0.85 mi20448+1912390+1212390+1220467(Top 77%)12130(Top 80%)12130(Top 591%)
25.2M25.20 mi0.35 mi20659-21112470-8012470-8025820(Top 97%)14710(Top 97%)14710(Top 717%)
Finish26.22 mi1.02 mi20712-5312484-1412484-1422248(Top 84%)12969(Top 85%)12969(Top 632%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

21298

Males

12878

M50-54

12878

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

23827

Males

14008

M50-54

14008

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

21298

Males

12878

M50-54

12878

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19399

Males

12057

M50-54

12057

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18601

Males

11762

M50-54

11762

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

18845

Males

11784

M50-54

11784

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19955

Males

12193

M50-54

12193

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

20910

Males

12525

M50-54

12525

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

18577

Males

11453

M50-54

11453

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

18922

Males

11557

M50-54

11557

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19422

Males

11762

M50-54

11762

23M→24M

23.0 - 24.0 mi

Top 73%
×6story building
+12ft-82ft

Overall

19559

Males

11797

M50-54

11797

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20467

Males

12130

M50-54

12130

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

25820

Males

14710

M50-54

14710

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

22248

Males

12969

M50-54

12969

Passing Analysis

Category:
Athletes Passed
2330
Passed By
2382
Net Change
-52
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20660
5K → 10K91838-1829#20660#22489
10K → 15K40528+377#22489#22112
15K → 20K5716+565#22112#21547
20K → Half1122+110#21547#21437
Half → 25K3742+372#21437#21065
25K → 30K28849+239#21065#20826
30K → 20M8384-1#20826#20827
20M → 21M1597+152#20827#20675
21M → 35K758+67#20675#20608
35K → 23M11215+97#20608#20511
23M → 24M6723+44#20511#20467
24M → 40K5334+19#20467#20448
40K → 25.2M0211-211#20448#20659
25.2M → Finish2275-53#20659#20712
TOTALS23302382-52
📊

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