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BOSTON MARATHON 2023

Loren Starr

Bib: 15703•M

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Top 49%
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
7:54/mi
24:33
↑ 97↓ 3451.5%
10K· 6.21 mi
8:09/mi
49:51
↑ 79↓ 1380.4%
15K· 9.32 mi
8:16/mi
1:15:31
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:41:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:47:47
↑ 19↓ 370.5%
25K· 15.53 mi
8:41/mi
2:08:49
↑ 66↓ 880.2%
30K· 18.64 mi
9:02/mi
2:36:54
↑ 181↓ 1480.2%
20M
9:24/mi
2:49:41
↑ 64↓ 500.2%
21M
10:59/mi
3:00:40
↑ 106↓ 241.6%
35K· 21.75 mi
9:05/mi
3:07:28
↑ 17↓ 861.7%
23M
9:49/mi
3:19:45
↑ 23↓ 630.6%
24M
9:11/mi
3:28:56
↓ 821.3%
40K· 24.85 mi
9:09/mi
3:36:45
↓ 200.3%
25.2M
10:26/mi
3:40:21
↑ 13↓ 160.2%
Finish· 26.22 mi
9:10/mi
3:49:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:47
Pace8:13 /mi
2nd Half
Distance13.11 mi
Time2:01:54
Pace9:18 /mi
📊Positive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4024:337:5424:33
7:54
-
10K
6.21 mi11:19:5849:518:0125:18
8:09
+0:15
15K
9.32 mi11:45:381:15:318:0625:40
8:16
+0:07
20K
12.43 mi12:12:051:41:588:1226:27
8:31
+0:15
Half
13.11 mi12:17:541:47:478:135:49
8:32
+0:01
25K
15.53 mi12:38:562:08:498:1821:02
8:41
+0:09
30K
18.64 mi13:07:012:36:548:2528:05
9:02
+0:21
20M
20.00 mi13:19:482:49:418:2912:47
9:24
+0:22
21M
21.00 mi13:30:473:00:408:3610:59
10:59
+1:35
35K
21.75 mi13:37:353:07:288:376:48
9:05
-1:54
23M
23.00 mi13:49:523:19:458:4112:17
9:49
+0:44
24M
24.00 mi13:59:033:28:568:429:11
9:11
-0:38
40K
24.85 mi14:06:523:36:458:437:49
9:09
-0:02
25.2M
25.20 mi14:10:283:40:218:453:36
10:26
+1:17
Finish
26.22 mi14:19:483:49:418:469:20
9:10
-1:16

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

7:54 /mi

Average Pace

8:46 /mi

Slowest Pace

10:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:47

47% of race

Time at Steady Pace

1:35:02

41% of race

Time at Slower Pace

26:52

12% of race

Average Pace: 8:46 /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 mi10:54:4024:337:5424:33
7:54
#13251
10K
6.21 mi11:19:5849:518:0125:18
8:09
#14535
15K
9.32 mi11:45:381:15:318:0625:40
8:16
#15132
20K
12.43 mi12:12:051:41:588:1226:27
8:31
#15606
Half
13.11 mi12:17:541:47:478:135:49
8:32
#15729
25K
15.53 mi12:38:562:08:498:1821:02
8:41
#15984
30K
18.64 mi13:07:012:36:548:2528:05
9:02
#16260
20M
20.00 mi13:19:482:49:418:2912:47
9:24
#16432
21M
21.00 mi13:30:473:00:408:3610:59
10:59
#16817
35K
21.75 mi13:37:353:07:288:376:48
9:05
#16880
23M
23.00 mi13:49:523:19:458:4112:17
9:49
#17076
24M
24.00 mi13:59:033:28:568:429:11
9:11
#17121
40K
24.85 mi14:06:523:36:458:437:49
9:09
#17114
25.2M
25.20 mi14:10:283:40:218:453:36
10:26
#17168
Finish
26.22 mi14:19:483:49:418:469:20
9:10
#17278
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi132519657965716286(Top 61%)10804(Top 71%)10804(Top 973%)
10K6.21 mi3.10 mi14535-128410153-49610153-49615836(Top 59%)10651(Top 70%)10651(Top 960%)
15K9.32 mi3.11 mi15132-59710371-21810371-21816286(Top 61%)10804(Top 71%)10804(Top 973%)
20K12.43 mi3.11 mi15606-47410525-15410525-15416931(Top 64%)11019(Top 73%)11019(Top 993%)
Half13.11 mi0.68 mi15729-12310570-4510570-4517813(Top 67%)11419(Top 75%)11419(Top 1029%)
25K15.53 mi2.42 mi15984-25510637-6710637-6717235(Top 65%)11082(Top 73%)11082(Top 998%)
30K18.64 mi3.11 mi16260-27610696-5910696-5917381(Top 65%)11068(Top 73%)11068(Top 997%)
20M20.00 mi1.36 mi16432-17210749-5310749-5318466(Top 69%)11433(Top 75%)11433(Top 1030%)
21M21.00 mi1.00 mi16817-38510923-17410923-17420784(Top 78%)12413(Top 82%)12413(Top 1118%)
35K21.75 mi0.75 mi16880-6310939-1610939-1618243(Top 69%)11245(Top 74%)11245(Top 1013%)
23M23.00 mi1.25 mi17076-19610991-5210991-5219449(Top 73%)11769(Top 78%)11769(Top 1060%)
24M24.00 mi1.00 mi17121-45109911099117985(Top 68%)11070(Top 73%)11070(Top 997%)
40K24.85 mi0.85 mi17114+710970+2110970+2116808(Top 63%)10496(Top 69%)10496(Top 946%)
25.2M25.20 mi0.35 mi17168-5410991-2110991-2118867(Top 71%)11402(Top 75%)11402(Top 1027%)
Finish26.22 mi1.02 mi17278-11011028-3711028-3718714(Top 70%)11404(Top 75%)11404(Top 1027%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

16286

Males

10804

M60-64

10804

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15836

Males

10651

M60-64

10651

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

16286

Males

10804

M60-64

10804

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

16931

Males

11019

M60-64

11019

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

17813

Males

11419

M60-64

11419

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

17235

Males

11082

M60-64

11082

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17381

Males

11068

M60-64

11068

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18466

Males

11433

M60-64

11433

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

20784

Males

12413

M60-64

12413

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

18243

Males

11245

M60-64

11245

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19449

Males

11769

M60-64

11769

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

17985

Males

11070

M60-64

11070

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16808

Males

10496

M60-64

10496

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18867

Males

11402

M60-64

11402

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

18714

Males

11404

M60-64

11404

Passing Analysis

Category:
Athletes Passed
605
Passed By
4632
Net Change
-4027
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13251
5K → 10K271311-1284#13251#14535
10K → 15K47644-597#14535#15132
15K → 20K66540-474#15132#15606
20K → Half10133-123#15606#15729
Half → 25K74329-255#15729#15984
25K → 30K111387-276#15984#16260
30K → 20M41213-172#16260#16432
20M → 21M11396-385#16432#16817
21M → 35K3093-63#16817#16880
35K → 23M37233-196#16880#17076
23M → 24M5095-45#17076#17121
24M → 40K5851+7#17121#17114
40K → 25.2M1165-54#17114#17168
25.2M → Finish32142-110#17168#17278
TOTALS6054632-4027
📊

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