Boston Marathon logo
BOSTON MARATHON 2023

Dennis Cruff

Bib: 21708•M

VA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Top 47%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:27
Rank: #15401
Start → 5K
25:27 | 8:11/mi
10K· 6.21 mi
51:35
Rank: #16509 (-1108)
5K → 10K
26:08 | 8:25/mi
15K· 9.32 mi
1:17:43
Rank: #16769 (-260)
10K → 15K
26:08 | 8:25/mi
20K· 12.43 mi
1:44:02
Rank: #16751 (+18)
15K → 20K
26:19 | 8:28/mi
Half· 13.11 mi
1:49:50
Rank: #16811 (-60)
20K → Half
5:48 | 8:30/mi
25K· 15.53 mi
2:10:35
Rank: #16773 (+38)
Half → 25K
20:45 | 8:33/mi
30K· 18.64 mi
2:38:11
Rank: #16688 (+85)
25K → 30K
27:36 | 8:53/mi
20M
2:50:24
Rank: #16662 (+26)
30K → 20M
12:13 | 8:59/mi
21M
2:59:30
Rank: #16472 (+190)
20M → 21M
9:06 | 9:06/mi
35K· 21.75 mi
3:06:18
Rank: #16557 (-85)
21M → 35K
6:48 | 9:05/mi
23M
3:17:50
Rank: #16596 (-39)
35K → 23M
11:32 | 9:13/mi
24M
3:27:32
Rank: #16799 (-203)
23M → 24M
9:42 | 9:42/mi
40K· 24.85 mi
3:35:45
Rank: #16889 (-90)
24M → 40K
8:13 | 9:37/mi
25.2M
3:39:21
Rank: #16932 (-43)
40K → 25.2M
3:36 | 10:26/mi
Finish· 26.22 mi
3:48:55
Rank: #17089 (-157)
25.2M → Finish
9:34 | 9:23/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:50
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time1:59:05
Pace9:05 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:4625:278:1125:27
8:11
-
10K
6.21 mi11:50:5451:358:1826:08
8:25
+0:14
15K
9.32 mi12:17:021:17:438:2026:08
8:25
0:00
20K
12.43 mi12:43:211:44:028:2226:19
8:28
+0:03
Half
13.11 mi12:49:091:49:508:235:48
8:30
+0:02
25K
15.53 mi13:09:542:10:358:2420:45
8:33
+0:03
30K
18.64 mi13:37:302:38:118:2927:36
8:53
+0:20
20M
20.00 mi13:49:432:50:248:3112:13
8:59
+0:06
21M
21.00 mi13:58:492:59:308:339:06
9:06
+0:07
35K
21.75 mi14:05:373:06:188:346:48
9:05
-0:01
23M
23.00 mi14:17:093:17:508:3611:32
9:13
+0:08
24M
24.00 mi14:26:513:27:328:399:42
9:42
+0:29
40K
24.85 mi14:35:043:35:458:418:13
9:37
-0:05
25.2M
25.20 mi14:38:403:39:218:423:36
10:26
+0:49
Finish
26.22 mi14:48:143:48:558:449:34
9:23
-1:03

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

8:11 /mi

Average Pace

8:44 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:35

57% of race

Time at Steady Pace

1:07:15

29% of race

Time at Slower Pace

31:05

14% of race

Average Pace: 8:44 /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 mi11:24:4625:278:1125:27
8:11
#15401
10K
6.21 mi11:50:5451:358:1826:08
8:25
#16509
15K
9.32 mi12:17:021:17:438:2026:08
8:25
#16769
20K
12.43 mi12:43:211:44:028:2226:19
8:28
#16751
Half
13.11 mi12:49:091:49:508:235:48
8:30
#16811
25K
15.53 mi13:09:542:10:358:2420:45
8:33
#16773
30K
18.64 mi13:37:302:38:118:2927:36
8:53
#16688
20M
20.00 mi13:49:432:50:248:3112:13
8:59
#16662
21M
21.00 mi13:58:492:59:308:339:06
9:06
#16472
35K
21.75 mi14:05:373:06:188:346:48
9:05
#16557
23M
23.00 mi14:17:093:17:508:3611:32
9:13
#16596
24M
24.00 mi14:26:513:27:328:399:42
9:42
#16799
40K
24.85 mi14:35:043:35:458:418:13
9:37
#16889
25.2M
25.20 mi14:38:403:39:218:423:36
10:26
#16932
Finish
26.22 mi14:48:143:48:558:449:34
9:23
#17089
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi15401104841048417217(Top 65%)11144(Top 73%)11144(Top 1004%)
10K6.21 mi3.10 mi16509-110810905-42110905-42117642(Top 66%)11353(Top 75%)11353(Top 1023%)
15K9.32 mi3.11 mi16769-26010972-6710972-6717217(Top 65%)11144(Top 73%)11144(Top 1004%)
20K12.43 mi3.11 mi16751+1810958+1410958+1416655(Top 63%)10903(Top 72%)10903(Top 982%)
Half13.11 mi0.68 mi16811-6010986-2810986-2817678(Top 66%)11366(Top 75%)11366(Top 1024%)
25K15.53 mi2.42 mi16773+3810937+4910937+4916534(Top 62%)10773(Top 71%)10773(Top 971%)
30K18.64 mi3.11 mi16688+8510875+6210875+6216561(Top 62%)10719(Top 71%)10719(Top 966%)
20M20.00 mi1.36 mi16662+2610852+2310852+2316469(Top 62%)10603(Top 70%)10603(Top 955%)
21M21.00 mi1.00 mi16472+19010760+9210760+9213984(Top 53%)9497(Top 63%)9497(Top 856%)
35K21.75 mi0.75 mi16557-8510789-2910789-2918242(Top 69%)11244(Top 74%)11244(Top 1013%)
23M23.00 mi1.25 mi16596-3910785+410785+417102(Top 64%)10737(Top 71%)10737(Top 967%)
24M24.00 mi1.00 mi16799-20310852-6710852-6719875(Top 75%)11945(Top 79%)11945(Top 1076%)
40K24.85 mi0.85 mi16889-9010873-2110873-2118705(Top 70%)11352(Top 75%)11352(Top 1023%)
25.2M25.20 mi0.35 mi16932-4310878-510878-518866(Top 71%)11401(Top 75%)11401(Top 1027%)
Finish26.22 mi1.02 mi17089-15710944-6610944-6619702(Top 74%)11843(Top 78%)11843(Top 1067%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

17217

Males

11144

M60-64

11144

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

17642

Males

11353

M60-64

11353

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

17217

Males

11144

M60-64

11144

15K→20K

9.3 - 12.4 mi

Top 63%
×5stories
+106ft-86ft

Overall

16655

Males

10903

M60-64

10903

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

17678

Males

11366

M60-64

11366

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

16534

Males

10773

M60-64

10773

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

16561

Males

10719

M60-64

10719

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

16469

Males

10603

M60-64

10603

20M→21M

20.0 - 21.0 mi

Top 53%
×8stories
+106ft-24ft

Overall

13984

Males

9497

M60-64

9497

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

18242

Males

11244

M60-64

11244

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

17102

Males

10737

M60-64

10737

23M→24M

23.0 - 24.0 mi

Top 75%
×6stories
+12ft-82ft

Overall

19875

Males

11945

M60-64

11945

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18705

Males

11352

M60-64

11352

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18866

Males

11401

M60-64

11401

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

19702

Males

11843

M60-64

11843

Passing Analysis

Category:
Athletes Passed
1189
Passed By
2877
Net Change
-1688
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15401
5K → 10K481156-1108#15401#16509
10K → 15K112372-260#16509#16769
15K → 20K183165+18#16769#16751
20K → Half868-60#16751#16811
Half → 25K13496+38#16811#16773
25K → 30K213128+85#16773#16688
30K → 20M9569+26#16688#16662
20M → 21M20212+190#16662#16472
21M → 35K28113-85#16472#16557
35K → 23M66105-39#16557#16596
23M → 24M26229-203#16596#16799
24M → 40K32122-90#16799#16889
40K → 25.2M1760-43#16889#16932
25.2M → Finish25182-157#16932#17089
TOTALS11892877-1688
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing