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BOSTON MARATHON 2023

Bob Balfour

Bib: 31358•M

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
33:02
Rank: #25025
Start → 5K
33:02 | 10:38/mi
10K· 6.21 mi
1:05:42
Rank: #24855 (+170)
5K → 10K
32:40 | 10:31/mi
15K· 9.32 mi
1:37:53
Rank: #24635 (+220)
10K → 15K
32:11 | 10:22/mi
20K· 12.43 mi
2:11:47
Rank: #24595 (+40)
15K → 20K
33:54 | 10:55/mi
Half· 13.11 mi
2:18:40
Rank: #24542 (+53)
20K → Half
6:53 | 10:05/mi
25K· 15.53 mi
2:46:36
Rank: #24606 (-64)
Half → 25K
27:56 | 11:31/mi
30K· 18.64 mi
3:31:56
Rank: #25185 (-579)
25K → 30K
45:20 | 14:35/mi
20M
3:48:47
Rank: #25155 (+30)
30K → 20M
16:51 | 12:24/mi
21M
4:03:05
Rank: #25173 (-18)
20M → 21M
14:18 | 14:18/mi
35K· 21.75 mi
4:11:57
Rank: #25161 (+12)
21M → 35K
8:52 | 11:51/mi
23M
4:28:19
Rank: #25182 (-21)
35K → 23M
16:22 | 13:04/mi
24M
4:41:01
Rank: #25190 (-8)
23M → 24M
12:42 | 12:42/mi
40K· 24.85 mi
4:52:41
Rank: #25214 (-24)
24M → 40K
11:40 | 13:39/mi
25.2M
4:57:52
Rank: #25232 (-18)
40K → 25.2M
5:11 | 15:02/mi
Finish· 26.22 mi
5:11:07
Rank: #25279 (-47)
25.2M → Finish
13:15 | 13:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:18:40
Pace10:35 /mi
2nd Half
Distance13.11 mi
Time2:52:27
Pace13:09 /mi
📊Positive Split: 24.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:5133:0210:3833:02
10:38
-
10K
6.21 mi12:29:311:05:4210:3432:40
10:31
-0:07
15K
9.32 mi13:01:421:37:5310:3032:11
10:22
-0:09
20K
12.43 mi13:35:362:11:4710:3633:54
10:55
+0:33
Half
13.11 mi13:42:292:18:4010:356:53
10:05
-0:50
25K
15.53 mi14:10:252:46:3610:4327:56
11:31
+1:26
30K
18.64 mi14:55:453:31:5611:2245:20
14:35
+3:04
20M
20.00 mi15:12:363:48:4711:2616:51
12:24
-2:11
21M
21.00 mi15:26:544:03:0511:3514:18
14:18
+1:54
35K
21.75 mi15:35:464:11:5711:358:52
11:51
-2:27
23M
23.00 mi15:52:084:28:1911:4016:22
13:04
+1:13
24M
24.00 mi16:04:504:41:0111:4312:42
12:42
-0:22
40K
24.85 mi16:16:304:52:4111:4711:40
13:39
+0:57
25.2M
25.20 mi16:21:414:57:5211:495:11
15:02
+1:23
Finish
26.22 mi16:34:565:11:0711:5213:15
13:00
-2:02

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

10:05 /mi

Average Pace

11:52 /mi

Slowest Pace

15:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:36

54% of race

Time at Steady Pace

1:08:02

22% of race

Time at Slower Pace

1:16:29

25% of race

Average Pace: 11:52 /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 mi11:56:5133:0210:3833:02
10:38
#25025
10K
6.21 mi12:29:311:05:4210:3432:40
10:31
#24855
15K
9.32 mi13:01:421:37:5310:3032:11
10:22
#24635
20K
12.43 mi13:35:362:11:4710:3633:54
10:55
#24595
Half
13.11 mi13:42:292:18:4010:356:53
10:05
#24542
25K
15.53 mi14:10:252:46:3610:4327:56
11:31
#24606
30K
18.64 mi14:55:453:31:5611:2245:20
14:35
#25185
20M
20.00 mi15:12:363:48:4711:2616:51
12:24
#25155
21M
21.00 mi15:26:544:03:0511:3514:18
14:18
#25173
35K
21.75 mi15:35:464:11:5711:358:52
11:51
#25161
23M
23.00 mi15:52:084:28:1911:4016:22
13:04
#25182
24M
24.00 mi16:04:504:41:0111:4312:42
12:42
#25190
40K
24.85 mi16:16:304:52:4111:4711:40
13:39
#25214
25.2M
25.20 mi16:21:414:57:5211:495:11
15:02
#25232
Finish
26.22 mi16:34:565:11:0711:5213:15
13:00
#25279
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi25025145581455824204(Top 91%)14176(Top 93%)14176(Top 1277%)
10K6.21 mi3.10 mi24855+17014479+7914479+7924704(Top 93%)14403(Top 95%)14403(Top 1298%)
15K9.32 mi3.11 mi24635+22014373+10614373+10624204(Top 91%)14176(Top 93%)14176(Top 1277%)
20K12.43 mi3.11 mi24595+4014344+2914344+2924501(Top 92%)14279(Top 94%)14279(Top 1286%)
Half13.11 mi0.68 mi24542+5314320+2414320+2423457(Top 88%)13832(Top 91%)13832(Top 1246%)
25K15.53 mi2.42 mi24606-6414334-1414334-1424697(Top 93%)14337(Top 94%)14337(Top 1292%)
30K18.64 mi3.11 mi25185-57914573-23914573-23926280(Top 99%)15014(Top 99%)15014(Top 1353%)
20M20.00 mi1.36 mi25155+3014553+2014553+2024632(Top 93%)14199(Top 94%)14199(Top 1279%)
21M21.00 mi1.00 mi25173-1814550+314550+325284(Top 95%)14511(Top 96%)14511(Top 1307%)
35K21.75 mi0.75 mi25161+1214539+1114539+1124528(Top 92%)14095(Top 93%)14095(Top 1270%)
23M23.00 mi1.25 mi25182-2114537+214537+225162(Top 95%)14422(Top 95%)14422(Top 1299%)
24M24.00 mi1.00 mi25190-814538-114538-125236(Top 95%)14416(Top 95%)14416(Top 1299%)
40K24.85 mi0.85 mi25214-2414545-714545-725455(Top 96%)14536(Top 96%)14536(Top 1310%)
25.2M25.20 mi0.35 mi25232-1814551-614551-625718(Top 97%)14657(Top 97%)14657(Top 1320%)
Finish26.22 mi1.02 mi25279-4714570-1914570-1925966(Top 98%)14791(Top 97%)14791(Top 1333%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21stories
+97ft-345ft

Overall

24204

Males

14176

M60-64

14176

5K→10K

3.1 - 6.2 mi

Top 93%
×5stories
+79ft-138ft

Overall

24704

Males

14403

M60-64

14403

10K→15K

6.2 - 9.3 mi

Top 91%
×3stories
+67ft-78ft

Overall

24204

Males

14176

M60-64

14176

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

24501

Males

14279

M60-64

14279

20K→Half

12.4 - 13.1 mi

Top 88%
×2stories
+19ft-37ft

Overall

23457

Males

13832

M60-64

13832

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

24697

Males

14337

M60-64

14337

25K→30K

15.5 - 18.6 mi

Top 99%
×9stories
+181ft-148ft

Overall

26280

Males

15014

M60-64

15014

30K→20M

18.6 - 20.0 mi

Top 93%
×5stories
+64ft-50ft

Overall

24632

Males

14199

M60-64

14199

20M→21M

20.0 - 21.0 mi

Top 95%
×8stories
+106ft-24ft

Overall

25284

Males

14511

M60-64

14511

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

24528

Males

14095

M60-64

14095

35K→23M

21.8 - 23.0 mi

Top 95%
×5stories
+23ft-63ft

Overall

25162

Males

14422

M60-64

14422

23M→24M

23.0 - 24.0 mi

Top 95%
×6stories
+12ft-82ft

Overall

25236

Males

14416

M60-64

14416

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

25455

Males

14536

M60-64

14536

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

25718

Males

14657

M60-64

14657

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2stories
+22ft-21ft

Overall

25966

Males

14791

M60-64

14791

Passing Analysis

Category:
Athletes Passed
925
Passed By
1179
Net Change
-254
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25025
5K → 10K284114+170#25025#24855
10K → 15K24525+220#24855#24635
15K → 20K11272+40#24635#24595
20K → Half6411+53#24595#24542
Half → 25K52116-64#24542#24606
25K → 30K5584-579#24606#25185
30K → 20M5020+30#25185#25155
20M → 21M2341-18#25155#25173
21M → 35K2311+12#25173#25161
35K → 23M2950-21#25161#25182
23M → 24M1523-8#25182#25190
24M → 40K1135-24#25190#25214
40K → 25.2M220-18#25214#25232
25.2M → Finish1057-47#25232#25279
TOTALS9251179-254
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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