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BOSTON MARATHON 2023

James Chaves

Bib: 8163•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 21%
Gender (Male)
#0 / 15176
Top 33%
Masters (Masters Men)
#0 / 9891
Top 19%
Division (M50-54)
#0 / 2052
Top 13%
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
7:09/mi
22:13
↑ 97↓ 3451.5%
10K· 6.21 mi
7:11/mi
44:31
↑ 79↓ 1380.4%
15K· 9.32 mi
7:07/mi
1:06:39
↑ 67↓ 78
20K· 12.43 mi
7:09/mi
1:28:52
↑ 106↓ 860.1%
Half· 13.11 mi
7:07/mi
1:33:43
↑ 19↓ 370.5%
25K· 15.53 mi
7:12/mi
1:51:10
↑ 66↓ 880.2%
30K· 18.64 mi
7:18/mi
2:13:50
↑ 181↓ 1480.2%
20M
7:12/mi
2:23:37
↑ 64↓ 500.2%
21M
7:29/mi
2:31:06
↑ 106↓ 241.6%
35K· 21.75 mi
6:30/mi
2:35:58
↑ 17↓ 861.7%
23M
6:51/mi
2:44:32
↑ 23↓ 630.6%
24M
6:41/mi
2:51:13
↓ 821.3%
40K· 24.85 mi
6:52/mi
2:57:05
↓ 200.3%
25.2M
7:12/mi
2:59:34
↑ 13↓ 160.2%
Finish· 26.22 mi
6:31/mi
3:06:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:33:43
Pace7:09 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:32:29
Pace7:03 /mi
📊Negative Split: 1.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2222:137:0922:13
7:09
-
10K
6.21 mi11:09:4044:317:1022:18
7:11
+0:02
15K
9.32 mi11:31:481:06:397:0922:08
7:07
-0:04
20K
12.43 mi11:54:011:28:527:0922:13
7:09
+0:02
Half
13.11 mi11:58:521:33:437:094:51
7:07
-0:02
25K
15.53 mi12:16:191:51:107:0917:27
7:12
+0:05
30K
18.64 mi12:38:592:13:507:1122:40
7:18
+0:06
20M
20.00 mi12:48:462:23:377:119:47
7:12
-0:06
21M
21.00 mi12:56:152:31:067:127:29
7:29
+0:17
35K
21.75 mi13:01:072:35:587:104:52
6:30
-0:59
23M
23.00 mi13:09:412:44:327:098:34
6:51
+0:21
24M
24.00 mi13:16:222:51:137:086:41
6:41
-0:10
40K
24.85 mi13:22:142:57:057:075:52
6:52
+0:11
25.2M
25.20 mi13:24:432:59:347:082:29
7:12
+0:20
Finish
26.22 mi13:31:213:06:127:066:38
6:31
-0:41

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

6:30 /mi

Average Pace

7:06 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

59:36

32% of race

Time at Steady Pace

2:06:36

68% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:06 /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 mi10:47:2222:137:0922:13
7:09
#7169
10K
6.21 mi11:09:4044:317:1022:18
7:11
#7513
15K
9.32 mi11:31:481:06:397:0922:08
7:07
#7421
20K
12.43 mi11:54:011:28:527:0922:13
7:09
#7228
Half
13.11 mi11:58:521:33:437:094:51
7:07
#7223
25K
15.53 mi12:16:191:51:107:0917:27
7:12
#7096
30K
18.64 mi12:38:592:13:507:1122:40
7:18
#6864
20M
20.00 mi12:48:462:23:377:119:47
7:12
#6704
21M
21.00 mi12:56:152:31:067:127:29
7:29
#6551
35K
21.75 mi13:01:072:35:587:104:52
6:30
#6376
23M
23.00 mi13:09:412:44:327:098:34
6:51
#6126
24M
24.00 mi13:16:222:51:137:086:41
6:41
#5922
40K
24.85 mi13:22:142:57:057:075:52
6:52
#5781
25.2M
25.20 mi13:24:432:59:347:082:29
7:12
#5709
Finish
26.22 mi13:31:213:06:127:066:38
6:31
#5523
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi7169639863987290(Top 27%)6445(Top 42%)6445(Top 314%)
10K6.21 mi3.10 mi7513-3446642-2446642-2447934(Top 30%)6890(Top 45%)6890(Top 336%)
15K9.32 mi3.11 mi7421+926570+726570+727290(Top 27%)6445(Top 42%)6445(Top 314%)
20K12.43 mi3.11 mi7228+1936414+1566414+1566799(Top 26%)6061(Top 40%)6061(Top 295%)
Half13.11 mi0.68 mi7223+56409+56409+57144(Top 27%)6313(Top 42%)6313(Top 308%)
25K15.53 mi2.42 mi7096+1276304+1056304+1056643(Top 25%)5890(Top 39%)5890(Top 287%)
30K18.64 mi3.11 mi6864+2326108+1966108+1965988(Top 22%)5354(Top 35%)5354(Top 261%)
20M20.00 mi1.36 mi6704+1605979+1295979+1295107(Top 19%)4629(Top 31%)4629(Top 226%)
21M21.00 mi1.00 mi6551+1535851+1285851+1284507(Top 17%)4109(Top 27%)4109(Top 200%)
35K21.75 mi0.75 mi6376+1755720+1315720+1312486(Top 9%)2358(Top 16%)2358(Top 115%)
23M23.00 mi1.25 mi6126+2505518+2025518+2022926(Top 11%)2736(Top 18%)2736(Top 133%)
24M24.00 mi1.00 mi5922+2045349+1695349+1693050(Top 11%)2834(Top 19%)2834(Top 138%)
40K24.85 mi0.85 mi5781+1415230+1195230+1193148(Top 12%)2892(Top 19%)2892(Top 141%)
25.2M25.20 mi0.35 mi5709+725168+625168+622584(Top 10%)2397(Top 16%)2397(Top 117%)
Finish26.22 mi1.02 mi5523+1865019+1495019+1492559(Top 10%)2353(Top 16%)2353(Top 115%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21story building
+97ft-345ft

Overall

7290

Males

6445

M50-54

6445

5K→10K

3.1 - 6.2 mi

Top 30%
×5story building
+79ft-138ft

Overall

7934

Males

6890

M50-54

6890

10K→15K

6.2 - 9.3 mi

Top 27%
×3story building
+67ft-78ft

Overall

7290

Males

6445

M50-54

6445

15K→20K

9.3 - 12.4 mi

Top 26%
×5story building
+106ft-86ft

Overall

6799

Males

6061

M50-54

6061

20K→Half

12.4 - 13.1 mi

Top 27%
×2story building
+19ft-37ft

Overall

7144

Males

6313

M50-54

6313

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

6643

Males

5890

M50-54

5890

25K→30K

15.5 - 18.6 mi

Top 22%
×9story building
+181ft-148ft

Overall

5988

Males

5354

M50-54

5354

30K→20M

18.6 - 20.0 mi

Top 19%
×5story building
+64ft-50ft

Overall

5107

Males

4629

M50-54

4629

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4507

Males

4109

M50-54

4109

21M→35K

21.0 - 21.8 mi

Top 9%
×7story building
+17ft-86ft

Overall

2486

Males

2358

M50-54

2358

35K→23M

21.8 - 23.0 mi

Top 11%
×5story building
+23ft-63ft

Overall

2926

Males

2736

M50-54

2736

23M→24M

23.0 - 24.0 mi

Top 11%
×6story building
+12ft-82ft

Overall

3050

Males

2834

M50-54

2834

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3148

Males

2892

M50-54

2892

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2584

Males

2397

M50-54

2397

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2559

Males

2353

M50-54

2353

Passing Analysis

Category:
Athletes Passed
2289
Passed By
643
Net Change
+1646
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7169
5K → 10K99443-344#7169#7513
10K → 15K18391+92#7513#7421
15K → 20K21623+193#7421#7228
20K → Half1813+5#7228#7223
Half → 25K15730+127#7223#7096
25K → 30K25826+232#7096#6864
30K → 20M1688+160#6864#6704
20M → 21M1596+153#6704#6551
21M → 35K1750+175#6551#6376
35K → 23M2511+250#6376#6126
23M → 24M2040+204#6126#5922
24M → 40K1421+141#5922#5781
40K → 25.2M720+72#5781#5709
25.2M → Finish1871+186#5709#5523
TOTALS2289643+1646
📊

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