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BOSTON MARATHON 2023

Sandy Spencer-Florczyk

Bib: 19555•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 46%
Masters (Masters Women)
#0 / 6539
Top 35%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:51
Rank: #16302
Start → 5K
25:51 | 8:19/mi
10K· 6.21 mi
51:08
Rank: #16031 (+271)
5K → 10K
25:17 | 8:08/mi
15K· 9.32 mi
1:16:29
Rank: #15875 (+156)
10K → 15K
25:21 | 8:10/mi
20K· 12.43 mi
1:42:05
Rank: #15678 (+197)
15K → 20K
25:36 | 8:14/mi
Half· 13.11 mi
1:47:37
Rank: #15654 (+24)
20K → Half
5:32 | 8:07/mi
25K· 15.53 mi
2:07:43
Rank: #15504 (+150)
Half → 25K
20:06 | 8:17/mi
30K· 18.64 mi
2:34:47
Rank: #15503 (+1)
25K → 30K
27:04 | 8:43/mi
20M
2:47:07
Rank: #15593 (-90)
30K → 20M
12:20 | 9:05/mi
21M
2:56:31
Rank: #15568 (+25)
20M → 21M
9:24 | 9:24/mi
35K· 21.75 mi
3:02:52
Rank: #15556 (+12)
21M → 35K
6:21 | 8:29/mi
23M
3:14:17
Rank: #15607 (-51)
35K → 23M
11:25 | 9:07/mi
24M
3:23:03
Rank: #15607
23M → 24M
8:46 | 8:46/mi
40K· 24.85 mi
3:30:35
Rank: #15604 (+3)
24M → 40K
7:32 | 8:49/mi
25.2M
3:33:40
Rank: #15557 (+47)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:42:35
Rank: #15592 (-35)
25.2M → Finish
8:55 | 8:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:37
Pace8:13 /mi
2nd Half
Distance13.11 mi
Time1:54:58
Pace8:46 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:1225:518:1925:51
8:19
-
10K
6.21 mi11:43:2951:088:1425:17
8:08
-0:11
15K
9.32 mi12:08:501:16:298:1225:21
8:10
+0:02
20K
12.43 mi12:34:261:42:058:1325:36
8:14
+0:04
Half
13.11 mi12:39:581:47:378:135:32
8:07
-0:07
25K
15.53 mi13:00:042:07:438:1320:06
8:17
+0:10
30K
18.64 mi13:27:082:34:478:1827:04
8:43
+0:26
20M
20.00 mi13:39:282:47:078:2112:20
9:05
+0:22
21M
21.00 mi13:48:522:56:318:249:24
9:24
+0:19
35K
21.75 mi13:55:133:02:528:256:21
8:29
-0:55
23M
23.00 mi14:06:383:14:178:2711:25
9:07
+0:38
24M
24.00 mi14:15:243:23:038:288:46
8:46
-0:21
40K
24.85 mi14:22:563:30:358:287:32
8:49
+0:03
25.2M
25.20 mi14:26:013:33:408:293:05
8:56
+0:07
Finish
26.22 mi14:34:563:42:358:308:55
8:45
-0:11

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

8:07 /mi

Average Pace

8:30 /mi

Slowest Pace

9:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:21

84% of race

Time at Steady Pace

36:14

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:29 /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 mi11:18:1225:518:1925:51
8:19
#16302
10K
6.21 mi11:43:2951:088:1425:17
8:08
#16031
15K
9.32 mi12:08:501:16:298:1225:21
8:10
#15875
20K
12.43 mi12:34:261:42:058:1325:36
8:14
#15678
Half
13.11 mi12:39:581:47:378:135:32
8:07
#15654
25K
15.53 mi13:00:042:07:438:1320:06
8:17
#15504
30K
18.64 mi13:27:082:34:478:1827:04
8:43
#15503
20M
20.00 mi13:39:282:47:078:2112:20
9:05
#15593
21M
21.00 mi13:48:522:56:318:249:24
9:24
#15568
35K
21.75 mi13:55:133:02:528:256:21
8:29
#15556
23M
23.00 mi14:06:383:14:178:2711:25
9:07
#15607
24M
24.00 mi14:15:243:23:038:288:46
8:46
#15607
40K
24.85 mi14:22:563:30:358:287:32
8:49
#15604
25.2M
25.20 mi14:26:013:33:408:293:05
8:56
#15557
Finish
26.22 mi14:34:563:42:358:308:55
8:45
#15592
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi163025469546915594(Top 59%)5043(Top 44%)5043(Top 269%)
10K6.21 mi3.10 mi16031+2715297+1725297+17215810(Top 59%)5152(Top 45%)5152(Top 274%)
15K9.32 mi3.11 mi15875+1565202+955202+9515594(Top 59%)5043(Top 44%)5043(Top 269%)
20K12.43 mi3.11 mi15678+1975102+1005102+10015216(Top 57%)4850(Top 42%)4850(Top 258%)
Half13.11 mi0.68 mi15654+245095+75095+715267(Top 57%)4852(Top 42%)4852(Top 258%)
25K15.53 mi2.42 mi15504+1505031+645031+6414904(Top 56%)4771(Top 42%)4771(Top 254%)
30K18.64 mi3.11 mi15503+15075-445075-4415573(Top 58%)5255(Top 46%)5255(Top 280%)
20M20.00 mi1.36 mi15593-905148-735148-7316928(Top 64%)6108(Top 53%)6108(Top 325%)
21M21.00 mi1.00 mi15568+255156-85156-815487(Top 58%)5342(Top 47%)5342(Top 284%)
35K21.75 mi0.75 mi15556+125172-165172-1615271(Top 57%)5275(Top 46%)5275(Top 281%)
23M23.00 mi1.25 mi15607-515229-575229-5716632(Top 62%)6095(Top 53%)6095(Top 325%)
24M24.00 mi1.00 mi156075245-165245-1616039(Top 60%)5826(Top 51%)5826(Top 310%)
40K24.85 mi0.85 mi15604+35250-55250-515153(Top 57%)5383(Top 47%)5383(Top 287%)
25.2M25.20 mi0.35 mi15557+475224+265224+2612283(Top 46%)3896(Top 34%)3896(Top 207%)
Finish26.22 mi1.02 mi15592-355259-355259-3516775(Top 63%)6238(Top 55%)6238(Top 332%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

15594

Females

5043

F40-44

5043

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

15810

Females

5152

F40-44

5152

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

15594

Females

5043

F40-44

5043

15K→20K

9.3 - 12.4 mi

Top 57%
×5stories
+106ft-86ft

Overall

15216

Females

4850

F40-44

4850

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

15267

Females

4852

F40-44

4852

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

14904

Females

4771

F40-44

4771

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

15573

Females

5255

F40-44

5255

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

16928

Females

6108

F40-44

6108

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15487

Females

5342

F40-44

5342

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

15271

Females

5275

F40-44

5275

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

16632

Females

6095

F40-44

6095

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

16039

Females

5826

F40-44

5826

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15153

Females

5383

F40-44

5383

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12283

Females

3896

F40-44

3896

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

16775

Females

6238

F40-44

6238

Passing Analysis

Category:
Athletes Passed
1948
Passed By
1238
Net Change
+710
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16302
5K → 10K439168+271#16302#16031
10K → 15K286130+156#16031#15875
15K → 20K28588+197#15875#15678
20K → Half3814+24#15678#15654
Half → 25K20656+150#15654#15504
25K → 30K180179+1#15504#15503
30K → 20M65155-90#15503#15593
20M → 21M9166+25#15593#15568
21M → 35K5644+12#15568#15556
35K → 23M65116-51#15556#15607
23M → 24M64640#15607#15607
24M → 40K6865+3#15607#15604
40K → 25.2M525+47#15604#15557
25.2M → Finish5388-35#15557#15592
TOTALS19481238+710
📊

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