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BOSTON MARATHON 2023

Oscar Nieto Romero

Bib: 31424•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
8:36/mi
26:44
↑ 97↓ 3451.5%
10K· 6.21 mi
8:14/mi
52:18
↑ 79↓ 1380.4%
15K· 9.32 mi
8:09/mi
1:17:36
↑ 67↓ 78
20K· 12.43 mi
8:14/mi
1:43:11
↑ 106↓ 860.1%
Half· 13.11 mi
8:14/mi
1:48:48
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:10:09
↑ 66↓ 880.2%
30K· 18.64 mi
9:50/mi
2:40:43
↑ 181↓ 1480.2%
20M
10:22/mi
2:54:48
↑ 64↓ 500.2%
21M
11:45/mi
3:06:33
↑ 106↓ 241.6%
35K· 21.75 mi
12:25/mi
3:15:50
↑ 17↓ 861.7%
23M
13:33/mi
3:32:48
↑ 23↓ 630.6%
24M
14:36/mi
3:47:24
↓ 821.3%
40K· 24.85 mi
15:06/mi
4:00:19
↓ 200.3%
25.2M
14:24/mi
4:05:17
↑ 13↓ 160.2%
Finish· 26.22 mi
12:10/mi
4:17:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:48
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time2:28:53
Pace11:21 /mi
📊Positive Split: 36.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:3826:448:3626:44
8:36
-
10K
6.21 mi12:14:1252:188:2525:34
8:14
-0:22
15K
9.32 mi12:39:301:17:368:2025:18
8:09
-0:05
20K
12.43 mi13:05:051:43:118:1825:35
8:14
+0:05
Half
13.11 mi13:10:421:48:488:185:37
8:14
0:00
25K
15.53 mi13:32:032:10:098:2321:21
8:48
+0:34
30K
18.64 mi14:02:372:40:438:3730:34
9:50
+1:02
20M
20.00 mi14:16:422:54:488:4414:05
10:22
+0:32
21M
21.00 mi14:28:273:06:338:5311:45
11:45
+1:23
35K
21.75 mi14:37:443:15:509:009:17
12:25
+0:40
23M
23.00 mi14:54:423:32:489:1516:58
13:33
+1:08
24M
24.00 mi15:09:183:47:249:2914:36
14:36
+1:03
40K
24.85 mi15:22:134:00:199:4012:55
15:06
+0:30
25.2M
25.20 mi15:27:114:05:179:444:58
14:24
-0:42
Finish
26.22 mi15:39:354:17:419:5012:24
12:10
-2:14

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

8:09 /mi

Average Pace

9:50 /mi

Slowest Pace

15:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:09

51% of race

Time at Steady Pace

44:39

17% of race

Time at Slower Pace

1:22:53

32% of race

Average Pace: 9:50 /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 mi11:48:3826:448:3626:44
8:36
#18258
10K
6.21 mi12:14:1252:188:2525:34
8:14
#17323
15K
9.32 mi12:39:301:17:368:2025:18
8:09
#16694
20K
12.43 mi13:05:051:43:118:1825:35
8:14
#16303
Half
13.11 mi13:10:421:48:488:185:37
8:14
#16274
25K
15.53 mi13:32:032:10:098:2321:21
8:48
#16599
30K
18.64 mi14:02:372:40:438:3730:34
9:50
#17496
20M
20.00 mi14:16:422:54:488:4414:05
10:22
#17974
21M
21.00 mi14:28:273:06:338:5311:45
11:45
#18444
35K
21.75 mi14:37:443:15:509:009:17
12:25
#19028
23M
23.00 mi14:54:423:32:489:1516:58
13:33
#19941
24M
24.00 mi15:09:183:47:249:2914:36
14:36
#20649
40K
24.85 mi15:22:134:00:199:4012:55
15:06
#21175
25.2M
25.20 mi15:27:114:05:179:444:58
14:24
#21297
Finish
26.22 mi15:39:354:17:419:5012:24
12:10
#21603
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi18258115271152715451(Top 58%)10487(Top 69%)10487(Top 511%)
10K6.21 mi3.10 mi17323+93511179+34811179+34816450(Top 62%)10888(Top 72%)10888(Top 531%)
15K9.32 mi3.11 mi16694+62910949+23010949+23015451(Top 58%)10487(Top 69%)10487(Top 511%)
20K12.43 mi3.11 mi16303+39110794+15510794+15515173(Top 57%)10342(Top 68%)10342(Top 504%)
Half13.11 mi0.68 mi16274+2910785+910785+916012(Top 60%)10712(Top 71%)10712(Top 522%)
25K15.53 mi2.42 mi16599-32510882-9710882-9717989(Top 68%)11425(Top 75%)11425(Top 557%)
30K18.64 mi3.11 mi17496-89711223-34111223-34120559(Top 77%)12452(Top 82%)12452(Top 607%)
20M20.00 mi1.36 mi17974-47811381-15811381-15821425(Top 80%)12751(Top 84%)12751(Top 621%)
21M21.00 mi1.00 mi18444-47011572-19111572-19122313(Top 84%)13118(Top 86%)13118(Top 639%)
35K21.75 mi0.75 mi19028-58411815-24311815-24325072(Top 94%)14357(Top 95%)14357(Top 700%)
23M23.00 mi1.25 mi19941-91312190-37512190-37525533(Top 96%)14595(Top 96%)14595(Top 711%)
24M24.00 mi1.00 mi20649-70812477-28712477-28726295(Top 99%)14977(Top 99%)14977(Top 730%)
40K24.85 mi0.85 mi21175-52612702-22512702-22526191(Top 98%)14906(Top 98%)14906(Top 726%)
25.2M25.20 mi0.35 mi21297-12212759-5712759-5725303(Top 95%)14447(Top 95%)14447(Top 704%)
Finish26.22 mi1.02 mi21603-30612886-12712886-12725389(Top 95%)14503(Top 96%)14503(Top 707%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

15451

Males

10487

M50-54

10487

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

16450

Males

10888

M50-54

10888

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

15451

Males

10487

M50-54

10487

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

15173

Males

10342

M50-54

10342

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

16012

Males

10712

M50-54

10712

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

17989

Males

11425

M50-54

11425

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

20559

Males

12452

M50-54

12452

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

21425

Males

12751

M50-54

12751

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

22313

Males

13118

M50-54

13118

21M→35K

21.0 - 21.8 mi

Top 94%
×7story building
+17ft-86ft

Overall

25072

Males

14357

M50-54

14357

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

25533

Males

14595

M50-54

14595

23M→24M

23.0 - 24.0 mi

Top 99%
×6story building
+12ft-82ft

Overall

26295

Males

14977

M50-54

14977

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

26191

Males

14906

M50-54

14906

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

25303

Males

14447

M50-54

14447

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×2story building
+22ft-21ft

Overall

25389

Males

14503

M50-54

14503

Passing Analysis

Category:
Athletes Passed
2283
Passed By
5628
Net Change
-3345
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18258
5K → 10K101984+935#18258#17323
10K → 15K66132+629#17323#16694
15K → 20K41726+391#16694#16303
20K → Half5425+29#16303#16274
Half → 25K56381-325#16274#16599
25K → 30K36933-897#16599#17496
30K → 20M15493-478#17496#17974
20M → 21M15485-470#17974#18444
21M → 35K2586-584#18444#19028
35K → 23M3916-913#19028#19941
23M → 24M0708-708#19941#20649
24M → 40K1527-526#20649#21175
40K → 25.2M2124-122#21175#21297
25.2M → Finish2308-306#21297#21603
TOTALS22835628-3345
📊

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