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BOSTON MARATHON 2023

James Randolph

Bib: 1960•M

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 3%
Division (M18-39)
#0 / 5285
Top 8%
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
6:02/mi
18:46
↑ 97↓ 3451.5%
10K· 6.21 mi
5:55/mi
37:09
↑ 79↓ 1380.4%
15K· 9.32 mi
5:57/mi
55:37
↑ 67↓ 78
20K· 12.43 mi
6:14/mi
1:14:58
↑ 106↓ 860.1%
Half· 13.11 mi
5:43/mi
1:18:52
↑ 19↓ 370.5%
25K· 15.53 mi
5:58/mi
1:33:21
↑ 66↓ 880.2%
30K· 18.64 mi
6:09/mi
1:52:28
↑ 181↓ 1480.2%
20M
6:14/mi
2:00:56
↑ 64↓ 500.2%
21M
6:24/mi
2:07:20
↑ 106↓ 241.6%
35K· 21.75 mi
5:41/mi
2:11:35
↑ 17↓ 861.7%
23M
6:05/mi
2:19:12
↑ 23↓ 630.6%
24M
6:01/mi
2:25:13
↓ 821.3%
40K· 24.85 mi
6:13/mi
2:30:32
↓ 200.3%
25.2M
6:37/mi
2:32:49
↑ 13↓ 160.2%
Finish· 26.22 mi
5:49/mi
2:38:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:52
Pace6:01 /mi
2nd Half
Distance13.11 mi
Time1:19:53
Pace6:06 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:1218:466:0218:46
6:02
-
10K
6.21 mi10:37:3537:095:5918:23
5:55
-0:07
15K
9.32 mi10:56:0355:375:5818:28
5:57
+0:02
20K
12.43 mi11:15:241:14:586:0219:21
6:14
+0:17
Half
13.11 mi11:19:181:18:526:013:54
5:43
-0:31
25K
15.53 mi11:33:471:33:216:0114:29
5:58
+0:15
30K
18.64 mi11:52:541:52:286:0219:07
6:09
+0:11
20M
20.00 mi12:01:222:00:566:038:28
6:14
+0:05
21M
21.00 mi12:07:462:07:206:046:24
6:24
+0:10
35K
21.75 mi12:12:012:11:356:034:15
5:41
-0:43
23M
23.00 mi12:19:382:19:126:037:37
6:05
+0:24
24M
24.00 mi12:25:392:25:136:036:01
6:01
-0:04
40K
24.85 mi12:30:582:30:326:035:19
6:13
+0:12
25.2M
25.20 mi12:33:152:32:496:042:17
6:37
+0:24
Finish
26.22 mi12:39:112:38:456:045:56
5:49
-0:48

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

5:41 /mi

Average Pace

6:04 /mi

Slowest Pace

6:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:30:04

95% of race

Time at Steady Pace

8:41

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:03 /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 mi10:19:1218:466:0218:46
6:02
#764
10K
6.21 mi10:37:3537:095:5918:23
5:55
#686
15K
9.32 mi10:56:0355:375:5818:28
5:57
#653
20K
12.43 mi11:15:241:14:586:0219:21
6:14
#734
Half
13.11 mi11:19:181:18:526:013:54
5:43
#693
25K
15.53 mi11:33:471:33:216:0114:29
5:58
#659
30K
18.64 mi11:52:541:52:286:0219:07
6:09
#639
20M
20.00 mi12:01:222:00:566:038:28
6:14
#635
21M
21.00 mi12:07:462:07:206:046:24
6:24
#618
35K
21.75 mi12:12:012:11:356:034:15
5:41
#595
23M
23.00 mi12:19:382:19:126:037:37
6:05
#575
24M
24.00 mi12:25:392:25:136:036:01
6:01
#570
40K
24.85 mi12:30:582:30:326:035:19
6:13
#567
25.2M
25.20 mi12:33:152:32:496:042:17
6:37
#565
Finish
26.22 mi12:39:112:38:456:045:56
5:49
#552
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi764716716589(Top 2%)546(Top 4%)546(Top 10%)
10K6.21 mi3.10 mi686+78642+74642+74620(Top 2%)577(Top 4%)577(Top 11%)
15K9.32 mi3.11 mi653+33610+32610+32589(Top 2%)546(Top 4%)546(Top 10%)
20K12.43 mi3.11 mi734-81691-81691-811123(Top 4%)1071(Top 7%)1071(Top 20%)
Half13.11 mi0.68 mi693+41650+41650+41305(Top 1%)281(Top 2%)281(Top 5%)
25K15.53 mi2.42 mi659+34618+32618+32510(Top 2%)473(Top 3%)473(Top 9%)
30K18.64 mi3.11 mi639+20598+20598+20590(Top 2%)554(Top 4%)554(Top 10%)
20M20.00 mi1.36 mi635+4594+4594+4709(Top 3%)670(Top 4%)670(Top 13%)
21M21.00 mi1.00 mi618+17578+16578+16484(Top 2%)450(Top 3%)450(Top 9%)
35K21.75 mi0.75 mi595+23555+23555+23212(Top 0.8%)189(Top 1%)189(Top 4%)
23M23.00 mi1.25 mi575+20536+19536+19431(Top 2%)403(Top 3%)403(Top 8%)
24M24.00 mi1.00 mi570+5530+6530+6573(Top 2%)543(Top 4%)543(Top 10%)
40K24.85 mi0.85 mi567+3528+2528+2674(Top 3%)637(Top 4%)637(Top 12%)
25.2M25.20 mi0.35 mi565+2526+2526+2677(Top 3%)642(Top 4%)642(Top 12%)
Finish26.22 mi1.02 mi552+13514+12514+12409(Top 2%)388(Top 3%)388(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21story building
+97ft-345ft

Overall

589

Males

546

M18-39

546

5K→10K

3.1 - 6.2 mi

Top 2%
×5story building
+79ft-138ft

Overall

620

Males

577

M18-39

577

10K→15K

6.2 - 9.3 mi

Top 2%
×3story building
+67ft-78ft

Overall

589

Males

546

M18-39

546

15K→20K

9.3 - 12.4 mi

Top 4%
×5story building
+106ft-86ft

Overall

1123

Males

1071

M18-39

1071

20K→Half

12.4 - 13.1 mi

Top 1%
×2story building
+19ft-37ft

Overall

305

Males

281

M18-39

281

Half→25K

13.1 - 15.5 mi

Top 2%
×4story building
+66ft-88ft

Overall

510

Males

473

M18-39

473

25K→30K

15.5 - 18.6 mi

Top 2%
×9story building
+181ft-148ft

Overall

590

Males

554

M18-39

554

30K→20M

18.6 - 20.0 mi

Top 3%
×5story building
+64ft-50ft

Overall

709

Males

670

M18-39

670

20M→21M

20.0 - 21.0 mi

Top 2%
×8story building
+106ft-24ft

Overall

484

Males

450

M18-39

450

21M→35K

21.0 - 21.8 mi

Top 0.8%
×7story building
+17ft-86ft

Overall

212

Males

189

M18-39

189

35K→23M

21.8 - 23.0 mi

Top 2%
×5story building
+23ft-63ft

Overall

431

Males

403

M18-39

403

23M→24M

23.0 - 24.0 mi

Top 2%
×6story building
+12ft-82ft

Overall

573

Males

543

M18-39

543

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

674

Males

637

M18-39

637

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

677

Males

642

M18-39

642

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2story building
+22ft-21ft

Overall

409

Males

388

M18-39

388

Passing Analysis

Category:
Athletes Passed
374
Passed By
162
Net Change
+212
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#764
5K → 10K8911+78#764#686
10K → 15K396+33#686#653
15K → 20K687-81#653#734
20K → Half410+41#734#693
Half → 25K362+34#693#659
25K → 30K3919+20#659#639
30K → 20M128+4#639#635
20M → 21M203+17#635#618
21M → 35K230+23#618#595
35K → 23M233+20#595#575
23M → 24M149+5#575#570
24M → 40K107+3#570#567
40K → 25.2M53+2#567#565
25.2M → Finish174+13#565#552
TOTALS374162+212
📊

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