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BOSTON MARATHON 2023

Kami Grandeen

Bib: 21949•F

AZ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 42%
Division (F45-49)
#0 / 1817
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
8:56/mi
27:46
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
54:11
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:19:45
↑ 67↓ 78
20K· 12.43 mi
8:25/mi
1:45:54
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:51:23
↑ 19↓ 370.5%
25K· 15.53 mi
8:04/mi
2:10:57
↑ 66↓ 880.2%
30K· 18.64 mi
8:35/mi
2:37:37
↑ 181↓ 1480.2%
20M
9:24/mi
2:50:24
↑ 64↓ 500.2%
21M
9:36/mi
3:00:00
↑ 106↓ 241.6%
35K· 21.75 mi
8:29/mi
3:06:21
↑ 17↓ 861.7%
23M
9:21/mi
3:18:04
↑ 23↓ 630.6%
24M
9:00/mi
3:27:04
↓ 821.3%
40K· 24.85 mi
9:02/mi
3:34:47
↓ 200.3%
25.2M
10:32/mi
3:38:25
↑ 13↓ 160.2%
Finish· 26.22 mi
8:45/mi
3:47:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:23
Pace8:30 /mi
2nd Half
Distance13.11 mi
Time1:55:57
Pace8:51 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0027:468:5627:46
8:56
-
10K
6.21 mi11:50:2554:118:4326:25
8:30
-0:26
15K
9.32 mi12:15:591:19:458:3325:34
8:14
-0:16
20K
12.43 mi12:42:081:45:548:3126:09
8:25
+0:11
Half
13.11 mi12:47:371:51:238:305:29
8:02
-0:23
25K
15.53 mi13:07:112:10:578:2619:34
8:04
+0:02
30K
18.64 mi13:33:512:37:378:2726:40
8:35
+0:31
20M
20.00 mi13:46:382:50:248:3112:47
9:24
+0:49
21M
21.00 mi13:56:143:00:008:349:36
9:36
+0:12
35K
21.75 mi14:02:353:06:218:346:21
8:29
-1:07
23M
23.00 mi14:14:183:18:048:3711:43
9:21
+0:52
24M
24.00 mi14:23:183:27:048:389:00
9:00
-0:21
40K
24.85 mi14:31:013:34:478:387:43
9:02
+0:02
25.2M
25.20 mi14:34:393:38:258:403:38
10:32
+1:30
Finish
26.22 mi14:43:343:47:208:418:55
8:45
-1:47

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

8:02 /mi

Average Pace

8:41 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:46

34% of race

Time at Steady Pace

1:52:50

50% of race

Time at Slower Pace

37:44

17% of race

Average Pace: 8:40 /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 mi11:24:0027:468:5627:46
8:56
#20152
10K
6.21 mi11:50:2554:118:4326:25
8:30
#19229
15K
9.32 mi12:15:591:19:458:3325:34
8:14
#18206
20K
12.43 mi12:42:081:45:548:3126:09
8:25
#17702
Half
13.11 mi12:47:371:51:238:305:29
8:02
#17543
25K
15.53 mi13:07:112:10:578:2619:34
8:04
#16919
30K
18.64 mi13:33:512:37:378:2726:40
8:35
#16497
20M
20.00 mi13:46:382:50:248:3112:47
9:24
#16664
21M
21.00 mi13:56:143:00:008:349:36
9:36
#16628
35K
21.75 mi14:02:353:06:218:346:21
8:29
#16579
23M
23.00 mi14:14:183:18:048:3711:43
9:21
#16648
24M
24.00 mi14:23:183:27:048:389:00
9:00
#16675
40K
24.85 mi14:31:013:34:478:387:43
9:02
#16660
25.2M
25.20 mi14:34:393:38:258:403:38
10:32
#16703
Finish
26.22 mi14:43:343:47:208:418:55
8:45
#16704
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi201527909790916089(Top 60%)5348(Top 47%)5348(Top 294%)
10K6.21 mi3.10 mi19229+9237295+6147295+61418270(Top 69%)6637(Top 58%)6637(Top 365%)
15K9.32 mi3.11 mi18206+10236643+6526643+65216089(Top 60%)5348(Top 47%)5348(Top 294%)
20K12.43 mi3.11 mi17702+5046346+2976346+29716361(Top 61%)5566(Top 49%)5566(Top 306%)
Half13.11 mi0.68 mi17543+1596246+1006246+10014757(Top 55%)4553(Top 40%)4553(Top 251%)
25K15.53 mi2.42 mi16919+6245902+3445902+34413324(Top 50%)3822(Top 33%)3822(Top 210%)
30K18.64 mi3.11 mi16497+4225683+2195683+21914834(Top 56%)4839(Top 42%)4839(Top 266%)
20M20.00 mi1.36 mi16664-1675791-1085791-10818485(Top 69%)7015(Top 61%)7015(Top 386%)
21M21.00 mi1.00 mi16628+365779+125779+1216437(Top 62%)5876(Top 51%)5876(Top 323%)
35K21.75 mi0.75 mi16579+495762+175762+1715301(Top 57%)5305(Top 46%)5305(Top 292%)
23M23.00 mi1.25 mi16648-695820-585820-5817763(Top 67%)6724(Top 59%)6724(Top 370%)
24M24.00 mi1.00 mi16675-275848-285848-2817248(Top 65%)6486(Top 57%)6486(Top 357%)
40K24.85 mi0.85 mi16660+155860-125860-1216306(Top 61%)6031(Top 53%)6031(Top 332%)
25.2M25.20 mi0.35 mi16703-435893-335893-3319218(Top 72%)7613(Top 67%)7613(Top 419%)
Finish26.22 mi1.02 mi16704-15904-115904-1116781(Top 63%)6244(Top 55%)6244(Top 344%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16089

Females

5348

F45-49

5348

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18270

Females

6637

F45-49

6637

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16089

Females

5348

F45-49

5348

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16361

Females

5566

F45-49

5566

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

14757

Females

4553

F45-49

4553

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13324

Females

3822

F45-49

3822

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14834

Females

4839

F45-49

4839

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18485

Females

7015

F45-49

7015

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

16437

Females

5876

F45-49

5876

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

15301

Females

5305

F45-49

5305

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17763

Females

6724

F45-49

6724

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

17248

Females

6486

F45-49

6486

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16306

Females

6031

F45-49

6031

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19218

Females

7613

F45-49

7613

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

16781

Females

6244

F45-49

6244

Passing Analysis

Category:
Athletes Passed
4268
Passed By
820
Net Change
+3448
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20152
5K → 10K100279+923#20152#19229
10K → 15K103613+1023#19229#18206
15K → 20K52521+504#18206#17702
20K → Half1601+159#17702#17543
Half → 25K6262+624#17543#16919
25K → 30K43917+422#16919#16497
30K → 20M35202-167#16497#16664
20M → 21M10670+36#16664#16628
21M → 35K7627+49#16628#16579
35K → 23M62131-69#16579#16648
23M → 24M5784-27#16648#16675
24M → 40K6449+15#16675#16660
40K → 25.2M1558-43#16660#16703
25.2M → Finish6566-1#16703#16704
TOTALS4268820+3448
📊

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