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BOSTON MARATHON 2023

Kip Sanford

Bib: 26404•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 (M55-59)
#0 / 1422
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:28
Rank: #21100
Start → 5K
28:28 | 9:10/mi
10K· 6.21 mi
56:03
Rank: #20725 (+375)
5K → 10K
27:35 | 8:53/mi
15K· 9.32 mi
1:23:50
Rank: #20545 (+180)
10K → 15K
27:47 | 8:57/mi
20K· 12.43 mi
1:51:47
Rank: #20338 (+207)
15K → 20K
27:57 | 9:00/mi
Half· 13.11 mi
1:57:50
Rank: #20313 (+25)
20K → Half
6:03 | 8:52/mi
25K· 15.53 mi
2:20:36
Rank: #20365 (-52)
Half → 25K
22:46 | 9:23/mi
30K· 18.64 mi
2:51:30
Rank: #20457 (-92)
25K → 30K
30:54 | 9:57/mi
20M
3:05:01
Rank: #20438 (+19)
30K → 20M
13:31 | 9:57/mi
21M
3:16:52
Rank: #20594 (-156)
20M → 21M
11:51 | 11:51/mi
35K· 21.75 mi
3:23:50
Rank: #20540 (+54)
21M → 35K
6:58 | 9:19/mi
23M
3:37:11
Rank: #20599 (-59)
35K → 23M
13:21 | 10:40/mi
24M
3:47:07
Rank: #20607 (-8)
23M → 24M
9:56 | 9:56/mi
40K· 24.85 mi
3:56:28
Rank: #20679 (-72)
24M → 40K
9:21 | 10:56/mi
25.2M
4:00:38
Rank: #20725 (-46)
40K → 25.2M
4:10 | 12:05/mi
Finish· 26.22 mi
4:11:06
Rank: #20783 (-58)
25.2M → Finish
10:28 | 10:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:50
Pace8:59 /mi
2nd Half
Distance13.11 mi
Time2:13:16
Pace10:10 /mi
📊Positive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:1828:289:1028:28
9:10
-
10K
6.21 mi12:12:5356:039:0127:35
8:53
-0:17
15K
9.32 mi12:40:401:23:509:0027:47
8:57
+0:04
20K
12.43 mi13:08:371:51:479:0027:57
9:00
+0:03
Half
13.11 mi13:14:401:57:508:596:03
8:52
-0:08
25K
15.53 mi13:37:262:20:369:0322:46
9:23
+0:31
30K
18.64 mi14:08:202:51:309:1230:54
9:57
+0:34
20M
20.00 mi14:21:513:05:019:1513:31
9:57
0:00
21M
21.00 mi14:33:423:16:529:2211:51
11:51
+1:54
35K
21.75 mi14:40:403:23:509:226:58
9:19
-2:32
23M
23.00 mi14:54:013:37:119:2713:21
10:40
+1:21
24M
24.00 mi15:03:573:47:079:289:56
9:56
-0:44
40K
24.85 mi15:13:183:56:289:319:21
10:56
+1:00
25.2M
25.20 mi15:17:284:00:389:334:10
12:05
+1:09
Finish
26.22 mi15:27:564:11:069:3510:28
10:16
-1:49

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

8:52 /mi

Average Pace

9:35 /mi

Slowest Pace

12:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:34

59% of race

Time at Steady Pace

1:04:49

26% of race

Time at Slower Pace

38:43

15% of race

Average Pace: 9:35 /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 mi11:45:1828:289:1028:28
9:10
#21100
10K
6.21 mi12:12:5356:039:0127:35
8:53
#20725
15K
9.32 mi12:40:401:23:509:0027:47
8:57
#20545
20K
12.43 mi13:08:371:51:479:0027:57
9:00
#20338
Half
13.11 mi13:14:401:57:508:596:03
8:52
#20313
25K
15.53 mi13:37:262:20:369:0322:46
9:23
#20365
30K
18.64 mi14:08:202:51:309:1230:54
9:57
#20457
20M
20.00 mi14:21:513:05:019:1513:31
9:57
#20438
21M
21.00 mi14:33:423:16:529:2211:51
11:51
#20594
35K
21.75 mi14:40:403:23:509:226:58
9:19
#20540
23M
23.00 mi14:54:013:37:119:2713:21
10:40
#20599
24M
24.00 mi15:03:573:47:079:289:56
9:56
#20607
40K
24.85 mi15:13:183:56:289:319:21
10:56
#20679
25.2M
25.20 mi15:17:284:00:389:334:10
12:05
#20725
Finish
26.22 mi15:27:564:11:069:3510:28
10:16
#20783
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi21100126531265320241(Top 76%)12411(Top 82%)12411(Top 873%)
10K6.21 mi3.10 mi20725+37512546+10712546+10720344(Top 76%)12426(Top 82%)12426(Top 874%)
15K9.32 mi3.11 mi20545+18012482+6412482+6420241(Top 76%)12411(Top 82%)12411(Top 873%)
20K12.43 mi3.11 mi20338+20712406+7612406+7619698(Top 74%)12179(Top 80%)12179(Top 856%)
Half13.11 mi0.68 mi20313+2512398+812398+819900(Top 75%)12256(Top 81%)12256(Top 862%)
25K15.53 mi2.42 mi20365-5212435-3712435-3720497(Top 77%)12488(Top 82%)12488(Top 878%)
30K18.64 mi3.11 mi20457-9212450-1512450-1520885(Top 78%)12582(Top 83%)12582(Top 885%)
20M20.00 mi1.36 mi20438+1912429+2112429+2120352(Top 76%)12273(Top 81%)12273(Top 863%)
21M21.00 mi1.00 mi20594-15612491-6212491-6222513(Top 85%)13204(Top 87%)13204(Top 929%)
35K21.75 mi0.75 mi20540+5412460+3112460+3119251(Top 72%)11697(Top 77%)11697(Top 823%)
23M23.00 mi1.25 mi20599-5912474-1412474-1421694(Top 81%)12766(Top 84%)12766(Top 898%)
24M24.00 mi1.00 mi20607-812456+1812456+1820623(Top 77%)12256(Top 81%)12256(Top 862%)
40K24.85 mi0.85 mi20679-7212482-2612482-2622241(Top 84%)12953(Top 85%)12953(Top 911%)
25.2M25.20 mi0.35 mi20725-4612497-1512497-1522688(Top 85%)13161(Top 87%)13161(Top 926%)
Finish26.22 mi1.02 mi20783-5812514-1712514-1722500(Top 85%)13085(Top 86%)13085(Top 920%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21stories
+97ft-345ft

Overall

20241

Males

12411

M55-59

12411

5K→10K

3.1 - 6.2 mi

Top 76%
×5stories
+79ft-138ft

Overall

20344

Males

12426

M55-59

12426

10K→15K

6.2 - 9.3 mi

Top 76%
×3stories
+67ft-78ft

Overall

20241

Males

12411

M55-59

12411

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

19698

Males

12179

M55-59

12179

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

19900

Males

12256

M55-59

12256

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

20497

Males

12488

M55-59

12488

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

20885

Males

12582

M55-59

12582

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

20352

Males

12273

M55-59

12273

20M→21M

20.0 - 21.0 mi

Top 85%
×8stories
+106ft-24ft

Overall

22513

Males

13204

M55-59

13204

21M→35K

21.0 - 21.8 mi

Top 72%
×7stories
+17ft-86ft

Overall

19251

Males

11697

M55-59

11697

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

21694

Males

12766

M55-59

12766

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

20623

Males

12256

M55-59

12256

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

22241

Males

12953

M55-59

12953

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22688

Males

13161

M55-59

13161

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

22500

Males

13085

M55-59

13085

Passing Analysis

Category:
Athletes Passed
1660
Passed By
1343
Net Change
+317
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21100
5K → 10K530155+375#21100#20725
10K → 15K27696+180#20725#20545
15K → 20K27164+207#20545#20338
20K → Half4520+25#20338#20313
Half → 25K98150-52#20313#20365
25K → 30K121213-92#20365#20457
30K → 20M8263+19#20457#20438
20M → 21M30186-156#20438#20594
21M → 35K6915+54#20594#20540
35K → 23M48107-59#20540#20599
23M → 24M4553-8#20599#20607
24M → 40K2193-72#20607#20679
40K → 25.2M652-46#20679#20725
25.2M → Finish1876-58#20725#20783
TOTALS16601343+317
📊

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