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BOSTON MARATHON 2023

Stacy Oldfield

Bib: 22034•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:57
Rank: #18720
Start → 5K
26:57 | 8:40/mi
10K· 6.21 mi
53:47
Rank: #18837 (-117)
5K → 10K
26:50 | 8:38/mi
15K· 9.32 mi
1:20:20
Rank: #18585 (+252)
10K → 15K
26:33 | 8:33/mi
20K· 12.43 mi
1:47:18
Rank: #18407 (+178)
15K → 20K
26:58 | 8:41/mi
Half· 13.11 mi
1:53:09
Rank: #18389 (+18)
20K → Half
5:51 | 8:34/mi
25K· 15.53 mi
2:14:23
Rank: #18277 (+112)
Half → 25K
21:14 | 8:45/mi
30K· 18.64 mi
2:42:18
Rank: #18018 (+259)
25K → 30K
27:55 | 8:59/mi
20M
2:54:35
Rank: #17904 (+114)
30K → 20M
12:17 | 9:02/mi
21M
3:04:21
Rank: #17856 (+48)
20M → 21M
9:46 | 9:46/mi
35K· 21.75 mi
3:10:58
Rank: #17830 (+26)
21M → 35K
6:37 | 8:51/mi
23M
3:22:27
Rank: #17788 (+42)
35K → 23M
11:29 | 9:10/mi
24M
3:31:33
Rank: #17802 (-14)
23M → 24M
9:06 | 9:06/mi
40K· 24.85 mi
3:39:39
Rank: #17829 (-27)
24M → 40K
8:06 | 9:28/mi
25.2M
3:43:23
Rank: #17880 (-51)
40K → 25.2M
3:44 | 10:50/mi
Finish· 26.22 mi
3:52:45
Rank: #17929 (-49)
25.2M → Finish
9:22 | 9:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:09
Pace8:38 /mi
2nd Half
Distance13.11 mi
Time1:59:36
Pace9:07 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0426:578:4026:57
8:40
-
10K
6.21 mi11:47:5453:478:3926:50
8:38
-0:02
15K
9.32 mi12:14:271:20:208:3726:33
8:33
-0:05
20K
12.43 mi12:41:251:47:188:3826:58
8:41
+0:08
Half
13.11 mi12:47:161:53:098:385:51
8:34
-0:07
25K
15.53 mi13:08:302:14:238:3921:14
8:45
+0:11
30K
18.64 mi13:36:252:42:188:4227:55
8:59
+0:14
20M
20.00 mi13:48:422:54:358:4412:17
9:02
+0:03
21M
21.00 mi13:58:283:04:218:479:46
9:46
+0:44
35K
21.75 mi14:05:053:10:588:476:37
8:51
-0:55
23M
23.00 mi14:16:343:22:278:4811:29
9:10
+0:19
24M
24.00 mi14:25:403:31:338:499:06
9:06
-0:04
40K
24.85 mi14:33:463:39:398:508:06
9:28
+0:22
25.2M
25.20 mi14:37:303:43:238:523:44
10:50
+1:22
Finish
26.22 mi14:46:523:52:458:539:22
9:11
-1:39

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

8:33 /mi

Average Pace

8:53 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:09

49% of race

Time at Steady Pace

1:38:00

42% of race

Time at Slower Pace

21:36

9% of race

Average Pace: 8:53 /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 mi11:21:0426:578:4026:57
8:40
#18720
10K
6.21 mi11:47:5453:478:3926:50
8:38
#18837
15K
9.32 mi12:14:271:20:208:3726:33
8:33
#18585
20K
12.43 mi12:41:251:47:188:3826:58
8:41
#18407
Half
13.11 mi12:47:161:53:098:385:51
8:34
#18389
25K
15.53 mi13:08:302:14:238:3921:14
8:45
#18277
30K
18.64 mi13:36:252:42:188:4227:55
8:59
#18018
20M
20.00 mi13:48:422:54:358:4412:17
9:02
#17904
21M
21.00 mi13:58:283:04:218:479:46
9:46
#17856
35K
21.75 mi14:05:053:10:588:476:37
8:51
#17830
23M
23.00 mi14:16:343:22:278:4811:29
9:10
#17788
24M
24.00 mi14:25:403:31:338:499:06
9:06
#17802
40K
24.85 mi14:33:463:39:398:508:06
9:28
#17829
25.2M
25.20 mi14:37:303:43:238:523:44
10:50
#17880
Finish
26.22 mi14:46:523:52:458:539:22
9:11
#17929
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi187207016701618130(Top 68%)6578(Top 58%)6578(Top 807%)
10K6.21 mi3.10 mi18837-1177034-187034-1819059(Top 72%)7115(Top 62%)7115(Top 873%)
15K9.32 mi3.11 mi18585+2526873+1616873+16118130(Top 68%)6578(Top 58%)6578(Top 807%)
20K12.43 mi3.11 mi18407+1786755+1186755+11818007(Top 68%)6513(Top 57%)6513(Top 799%)
Half13.11 mi0.68 mi18389+186738+176738+1718222(Top 68%)6617(Top 58%)6617(Top 812%)
25K15.53 mi2.42 mi18277+1126695+436695+4317718(Top 67%)6415(Top 56%)6415(Top 787%)
30K18.64 mi3.11 mi18018+2596576+1196576+11917102(Top 64%)6130(Top 54%)6130(Top 752%)
20M20.00 mi1.36 mi17904+1146528+486528+4816769(Top 63%)6020(Top 53%)6020(Top 739%)
21M21.00 mi1.00 mi17856+486505+236505+2317140(Top 64%)6275(Top 55%)6275(Top 770%)
35K21.75 mi0.75 mi17830+266499+66499+617215(Top 65%)6400(Top 56%)6400(Top 785%)
23M23.00 mi1.25 mi17788+426495+46495+416926(Top 64%)6252(Top 55%)6252(Top 767%)
24M24.00 mi1.00 mi17802-146507-126507-1217683(Top 66%)6734(Top 59%)6734(Top 826%)
40K24.85 mi0.85 mi17829-276530-236530-2318259(Top 69%)7079(Top 62%)7079(Top 869%)
25.2M25.20 mi0.35 mi17880-516560-306560-3020046(Top 75%)8077(Top 71%)8077(Top 991%)
Finish26.22 mi1.02 mi17929-496612-526612-5218883(Top 71%)7376(Top 65%)7376(Top 905%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

18130

Females

6578

F55-59

6578

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

19059

Females

7115

F55-59

7115

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

18130

Females

6578

F55-59

6578

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

18007

Females

6513

F55-59

6513

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

18222

Females

6617

F55-59

6617

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

17718

Females

6415

F55-59

6415

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

17102

Females

6130

F55-59

6130

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16769

Females

6020

F55-59

6020

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

17140

Females

6275

F55-59

6275

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

17215

Females

6400

F55-59

6400

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

16926

Females

6252

F55-59

6252

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

17683

Females

6734

F55-59

6734

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18259

Females

7079

F55-59

7079

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

20046

Females

8077

F55-59

8077

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2stories
+22ft-21ft

Overall

18883

Females

7376

F55-59

7376

Passing Analysis

Category:
Athletes Passed
2003
Passed By
1212
Net Change
+791
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18720
5K → 10K288405-117#18720#18837
10K → 15K33987+252#18837#18585
15K → 20K25880+178#18585#18407
20K → Half4022+18#18407#18389
Half → 25K17967+112#18389#18277
25K → 30K32768+259#18277#18018
30K → 20M14733+114#18018#17904
20M → 21M10860+48#17904#17856
21M → 35K6034+26#17856#17830
35K → 23M10765+42#17830#17788
23M → 24M6276-14#17788#17802
24M → 40K4370-27#17802#17829
40K → 25.2M1364-51#17829#17880
25.2M → Finish3281-49#17880#17929
TOTALS20031212+791
📊

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