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BOSTON MARATHON 2023

Bob Collins

MA

Bib: 21436 M

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 43%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:47/mi
24:12
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:08/mi
49:27
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:12/mi
1:14:57
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:30/mi
1:41:23
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:17/mi
1:47:02
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:41/mi
2:08:04
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:07/mi
2:36:24
↑ 181↓ 1480.2%
138 ft elev
20M
9:15/mi
2:48:58
↑ 64↓ 500.2%
148 ft elev
21M
9:57/mi
2:58:55
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:52/mi
3:05:33
↑ 17↓ 861.7%
156 ft elev
23M
9:29/mi
3:17:26
↑ 23↓ 630.6%
116 ft elev
24M
8:51/mi
3:26:17
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:00/mi
3:33:59
↓ 200.3%
20 ft elev
25.2M
10:00/mi
3:37:26
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:07/mi
3:46:43
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:47:028:10 /mi⚡ faster
2nd Half
1:59:419:08 /mi+11.8%
Positive split — 11.8% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
24:127:473.11 mi24:12
7:47
-
10K
49:277:573.10 mi25:15
8:08
+0:21
15K
1:14:578:023.11 mi25:30
8:12
+0:04
20K
1:41:238:093.11 mi26:26
8:30
+0:18
Half(13.11 mi)
1:47:028:100.68 mi5:39
8:17
-0:13
25K
2:08:048:152.42 mi21:02
8:41
+0:24
30K
2:36:248:233.11 mi28:20
9:07
+0:26
20M
2:48:588:271.36 mi12:34
9:15
+0:08
21M
2:58:558:311.00 mi9:57
9:57
+0:42
35K
3:05:338:320.75 mi6:38
8:52
-1:05
23M
3:17:268:351.25 mi11:53
9:29
+0:37
24M
3:26:178:361.00 mi8:51
8:51
-0:38
40K
3:33:598:370.85 mi7:42
9:00
+0:09
25.2M
3:37:268:380.35 mi3:27
10:00
+1:00
Finish(26.22 mi)
3:46:438:391.02 mi9:17
9:07
-0:53
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:47 /mi

Average Pace

8:39 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:47:02

47% of race

Time at Steady Pace

1:21:50

36% of race

Time at Slower Pace

37:51

17% of race

Average Pace: 8:39 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi1224992309230159021065010650
10K3.10 mi14056-18079964-7349964-734157091060510605
15K3.11 mi14671-61510195-23110195-231159021065010650
20K3.11 mi15308-63710413-21810413-218168951100011000
Half(13.11 mi)0.68 mi15329-2110416-310416-3163291081510815
25K2.42 mi15643-31410509-9310509-93172311107811078
30K3.11 mi16082-43910638-12910638-129177801124511245
20M1.36 mi16204-12210663-2510663-25177681112511125
21M1.00 mi16312-10810689-2610689-26178331115111151
35K0.75 mi16339-2710695-610695-6172551081210812
23M1.25 mi16481-14210741-4610741-46182861125311253
24M1.00 mi16482-110725+1610725+16164711038610386
40K0.85 mi16451+3110684+4110684+41161431018710187
25.2M0.35 mi16459-810687-310687-3173491070210702
Finish(26.22 mi)1.02 mi16556-9710722-3510722-35184841129711297

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

15902

Males

10650

M60-64

10650

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15709

Males

10605

M60-64

10605

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

15902

Males

10650

M60-64

10650

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

16895

Males

11000

M60-64

11000

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

16329

Males

10815

M60-64

10815

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

17231

Males

11078

M60-64

11078

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17780

Males

11245

M60-64

11245

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17768

Males

11125

M60-64

11125

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

17833

Males

11151

M60-64

11151

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17255

Males

10812

M60-64

10812

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

18286

Males

11253

M60-64

11253

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

16471

Males

10386

M60-64

10386

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16143

Males

10187

M60-64

10187

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

17349

Males

10702

M60-64

10702

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18484

Males

11297

M60-64

11297

Passing Analysis

Category:
Passed
661
Passed By
4968
Net Change
-4307
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12249
5K → 10K191826-1807#12249#14056
10K → 15K60675-615#14056#14671
15K → 20K46683-637#14671#15308
20K → Half2748-21#15308#15329
Half → 25K60374-314#15329#15643
25K → 30K76515-439#15643#16082
30K → 20M52174-122#16082#16204
20M → 21M43151-108#16204#16312
21M → 35K4370-27#16312#16339
35K → 23M41183-142#16339#16481
23M → 24M6061-1#16481#16482
24M → 40K8756+31#16482#16451
40K → 25.2M2129-8#16451#16459
25.2M → Finish26123-97#16459#16556
TOTALS6614968-4307

Passing Charts

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