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BOSTON MARATHON 2023

James Lord

Bib: 31808•M

ON

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
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
8:14/mi
25:34
↑ 97↓ 3451.5%
10K· 6.21 mi
8:16/mi
51:14
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:16:12
↑ 67↓ 78
20K· 12.43 mi
8:13/mi
1:41:43
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:47:12
↑ 19↓ 370.5%
25K· 15.53 mi
8:20/mi
2:07:25
↑ 66↓ 880.2%
30K· 18.64 mi
8:56/mi
2:35:09
↑ 181↓ 1480.2%
20M
8:52/mi
2:47:12
↑ 64↓ 500.2%
21M
9:44/mi
2:56:56
↑ 106↓ 241.6%
35K· 21.75 mi
9:19/mi
3:03:54
↑ 17↓ 861.7%
23M
9:13/mi
3:15:26
↑ 23↓ 630.6%
24M
8:44/mi
3:24:10
↓ 821.3%
40K· 24.85 mi
9:00/mi
3:31:52
↓ 200.3%
25.2M
10:09/mi
3:35:22
↑ 13↓ 160.2%
Finish· 26.22 mi
8:48/mi
3:44:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:12
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time1:57:08
Pace8:56 /mi
📊Positive Split: 9.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:1425:348:1425:34
8:14
-
10K
6.21 mi12:08:5451:148:1525:40
8:16
+0:02
15K
9.32 mi12:33:521:16:128:1124:58
8:02
-0:14
20K
12.43 mi12:59:231:41:438:1125:31
8:13
+0:11
Half
13.11 mi13:04:521:47:128:115:29
8:02
-0:11
25K
15.53 mi13:25:052:07:258:1220:13
8:20
+0:18
30K
18.64 mi13:52:492:35:098:1927:44
8:56
+0:36
20M
20.00 mi14:04:522:47:128:2212:03
8:52
-0:04
21M
21.00 mi14:14:362:56:568:269:44
9:44
+0:52
35K
21.75 mi14:21:343:03:548:276:58
9:19
-0:25
23M
23.00 mi14:33:063:15:268:3011:32
9:13
-0:06
24M
24.00 mi14:41:503:24:108:308:44
8:44
-0:29
40K
24.85 mi14:49:323:31:528:317:42
9:00
+0:16
25.2M
25.20 mi14:53:023:35:228:333:30
10:09
+1:09
Finish
26.22 mi15:02:003:44:208:348:58
8:48
-1:21

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

8:02 /mi

Average Pace

8:34 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:25

57% of race

Time at Steady Pace

1:05:11

29% of race

Time at Slower Pace

31:44

14% of race

Average Pace: 8:33 /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 mi11:43:1425:348:1425:34
8:14
#15645
10K
6.21 mi12:08:5451:148:1525:40
8:16
#16148
15K
9.32 mi12:33:521:16:128:1124:58
8:02
#15637
20K
12.43 mi12:59:231:41:438:1125:31
8:13
#15472
Half
13.11 mi13:04:521:47:128:115:29
8:02
#15434
25K
15.53 mi13:25:052:07:258:1220:13
8:20
#15367
30K
18.64 mi13:52:492:35:098:1927:44
8:56
#15629
20M
20.00 mi14:04:522:47:128:2212:03
8:52
#15616
21M
21.00 mi14:14:362:56:568:269:44
9:44
#15698
35K
21.75 mi14:21:343:03:548:276:58
9:19
#15827
23M
23.00 mi14:33:063:15:268:3011:32
9:13
#15943
24M
24.00 mi14:41:503:24:108:308:44
8:44
#15924
40K
24.85 mi14:49:323:31:528:317:42
9:00
#15922
25.2M
25.20 mi14:53:023:35:228:333:30
10:09
#15953
Finish
26.22 mi15:02:003:44:208:348:58
8:48
#16003
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi15645105581055814683(Top 55%)10170(Top 67%)10170(Top 192%)
10K6.21 mi3.10 mi16148-50310765-20710765-20716646(Top 63%)10962(Top 72%)10962(Top 207%)
15K9.32 mi3.11 mi15637+51110560+20510560+20514683(Top 55%)10170(Top 67%)10170(Top 192%)
20K12.43 mi3.11 mi15472+16510476+8410476+8415041(Top 56%)10282(Top 68%)10282(Top 195%)
Half13.11 mi0.68 mi15434+3810459+1710459+1714649(Top 55%)10169(Top 67%)10169(Top 192%)
25K15.53 mi2.42 mi15367+6710405+5410405+5415180(Top 57%)10212(Top 67%)10212(Top 193%)
30K18.64 mi3.11 mi15629-26210471-6610471-6616786(Top 63%)10819(Top 71%)10819(Top 205%)
20M20.00 mi1.36 mi15616+1310435+3610435+3615806(Top 59%)10334(Top 68%)10334(Top 196%)
21M21.00 mi1.00 mi15698-8210433+210433+216963(Top 64%)10775(Top 71%)10775(Top 204%)
35K21.75 mi0.75 mi15827-12910478-4510478-4519170(Top 72%)11653(Top 77%)11653(Top 220%)
23M23.00 mi1.25 mi15943-11610496-1810496-1817095(Top 64%)10730(Top 71%)10730(Top 203%)
24M24.00 mi1.00 mi15924+1910476+2010476+2015828(Top 59%)10094(Top 67%)10094(Top 191%)
40K24.85 mi0.85 mi15922+210465+1110465+1116142(Top 61%)10186(Top 67%)10186(Top 193%)
25.2M25.20 mi0.35 mi15953-3110475-1010475-1017900(Top 67%)10959(Top 72%)10959(Top 207%)
Finish26.22 mi1.02 mi16003-5010492-1710492-1717016(Top 64%)10612(Top 70%)10612(Top 201%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14683

Males

10170

M18-39

10170

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

16646

Males

10962

M18-39

10962

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14683

Males

10170

M18-39

10170

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15041

Males

10282

M18-39

10282

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

14649

Males

10169

M18-39

10169

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

15180

Males

10212

M18-39

10212

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

16786

Males

10819

M18-39

10819

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

15806

Males

10334

M18-39

10334

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

16963

Males

10775

M18-39

10775

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

19170

Males

11653

M18-39

11653

35K→23M

21.8 - 23.0 mi

Top 64%
×5story building
+23ft-63ft

Overall

17095

Males

10730

M18-39

10730

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

15828

Males

10094

M18-39

10094

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16142

Males

10186

M18-39

10186

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

17900

Males

10959

M18-39

10959

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

17016

Males

10612

M18-39

10612

Passing Analysis

Category:
Athletes Passed
1686
Passed By
2044
Net Change
-358
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15645
5K → 10K120623-503#15645#16148
10K → 15K54837+511#16148#15637
15K → 20K25792+165#15637#15472
20K → Half5517+38#15472#15434
Half → 25K170103+67#15434#15367
25K → 30K103365-262#15367#15629
30K → 20M9885+13#15629#15616
20M → 21M59141-82#15616#15698
21M → 35K23152-129#15698#15827
35K → 23M48164-116#15827#15943
23M → 24M8465+19#15943#15924
24M → 40K6058+2#15924#15922
40K → 25.2M1849-31#15922#15953
25.2M → Finish4393-50#15953#16003
TOTALS16862044-358
📊

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