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BOSTON MARATHON 2023

Teresa Firth

Bib: 23490•F

MA

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 28%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:54
Rank: #18630
Start → 5K
26:54 | 8:39/mi
10K· 6.21 mi
52:58
Rank: #18059 (+571)
5K → 10K
26:04 | 8:23/mi
15K· 9.32 mi
1:19:00
Rank: #17698 (+361)
10K → 15K
26:02 | 8:23/mi
20K· 12.43 mi
1:45:17
Rank: #17387 (+311)
15K → 20K
26:17 | 8:28/mi
Half· 13.11 mi
1:51:03
Rank: #17379 (+8)
20K → Half
5:46 | 8:27/mi
25K· 15.53 mi
2:11:44
Rank: #17211 (+168)
Half → 25K
20:41 | 8:32/mi
30K· 18.64 mi
2:39:47
Rank: #17195 (+16)
25K → 30K
28:03 | 9:02/mi
20M
2:53:26
Rank: #17553 (-358)
30K → 20M
13:39 | 10:03/mi
21M
3:03:26
Rank: #17598 (-45)
20M → 21M
10:00 | 10:00/mi
35K· 21.75 mi
3:10:14
Rank: #17622 (-24)
21M → 35K
6:48 | 9:05/mi
23M
3:21:58
Rank: #17650 (-28)
35K → 23M
11:44 | 9:22/mi
24M
3:31:13
Rank: #17715 (-65)
23M → 24M
9:15 | 9:15/mi
40K· 24.85 mi
3:39:23
Rank: #17773 (-58)
24M → 40K
8:10 | 9:33/mi
25.2M
3:42:55
Rank: #17787 (-14)
40K → 25.2M
3:32 | 10:15/mi
Finish· 26.22 mi
3:52:30
Rank: #17886 (-99)
25.2M → Finish
9:35 | 9:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:03
Pace8:28 /mi
2nd Half
Distance13.11 mi
Time2:01:27
Pace9:16 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3726:548:3926:54
8:39
-
10K
6.21 mi11:47:4152:588:3126:04
8:23
-0:16
15K
9.32 mi12:13:431:19:008:2926:02
8:23
0:00
20K
12.43 mi12:40:001:45:178:2826:17
8:28
+0:05
Half
13.11 mi12:45:461:51:038:285:46
8:27
-0:01
25K
15.53 mi13:06:272:11:448:2920:41
8:32
+0:05
30K
18.64 mi13:34:302:39:478:3428:03
9:02
+0:30
20M
20.00 mi13:48:092:53:268:4013:39
10:03
+1:01
21M
21.00 mi13:58:093:03:268:4410:00
10:00
-0:03
35K
21.75 mi14:04:573:10:148:456:48
9:05
-0:55
23M
23.00 mi14:16:413:21:588:4711:44
9:22
+0:17
24M
24.00 mi14:25:563:31:138:489:15
9:15
-0:07
40K
24.85 mi14:34:063:39:238:508:10
9:33
+0:18
25.2M
25.20 mi14:37:383:42:558:513:32
10:15
+0:42
Finish
26.22 mi14:47:133:52:308:529:35
9:24
-0:51

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

8:23 /mi

Average Pace

8:52 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:44

57% of race

Time at Steady Pace

55:50

24% of race

Time at Slower Pace

44:56

19% of race

Average Pace: 8:52 /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 mi11:21:3726:548:3926:54
8:39
#18630
10K
6.21 mi11:47:4152:588:3126:04
8:23
#18059
15K
9.32 mi12:13:431:19:008:2926:02
8:23
#17698
20K
12.43 mi12:40:001:45:178:2826:17
8:28
#17387
Half
13.11 mi12:45:461:51:038:285:46
8:27
#17379
25K
15.53 mi13:06:272:11:448:2920:41
8:32
#17211
30K
18.64 mi13:34:302:39:478:3428:03
9:02
#17195
20M
20.00 mi13:48:092:53:268:4013:39
10:03
#17553
21M
21.00 mi13:58:093:03:268:4410:00
10:00
#17598
35K
21.75 mi14:04:573:10:148:456:48
9:05
#17622
23M
23.00 mi14:16:413:21:588:4711:44
9:22
#17650
24M
24.00 mi14:25:563:31:138:489:15
9:15
#17715
40K
24.85 mi14:34:063:39:238:508:10
9:33
#17773
25.2M
25.20 mi14:37:383:42:558:513:32
10:15
#17787
Finish
26.22 mi14:47:133:52:308:529:35
9:24
#17886
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi186306953695317041(Top 64%)5945(Top 52%)5945(Top 729%)
10K6.21 mi3.10 mi18059+5716570+3836570+38317535(Top 66%)6203(Top 54%)6203(Top 761%)
15K9.32 mi3.11 mi17698+3616335+2356335+23517041(Top 64%)5945(Top 52%)5945(Top 729%)
20K12.43 mi3.11 mi17387+3116150+1856150+18516610(Top 62%)5713(Top 50%)5713(Top 701%)
Half13.11 mi0.68 mi17379+86149+16149+117513(Top 66%)6196(Top 54%)6196(Top 760%)
25K15.53 mi2.42 mi17211+1686069+806069+8016406(Top 62%)5674(Top 50%)5674(Top 696%)
30K18.64 mi3.11 mi17195+166075-66075-617339(Top 65%)6269(Top 55%)6269(Top 769%)
20M20.00 mi1.36 mi17553-3586309-2346309-23420602(Top 77%)8183(Top 72%)8183(Top 1004%)
21M21.00 mi1.00 mi17598-456356-476356-4718035(Top 68%)6783(Top 59%)6783(Top 832%)
35K21.75 mi0.75 mi17622-246379-236379-2318290(Top 69%)6991(Top 61%)6991(Top 858%)
23M23.00 mi1.25 mi17650-286413-346413-3417827(Top 67%)6766(Top 59%)6766(Top 830%)
24M24.00 mi1.00 mi17715-656461-486461-4818273(Top 69%)7041(Top 62%)7041(Top 864%)
40K24.85 mi0.85 mi17773-586501-406501-4018521(Top 70%)7225(Top 63%)7225(Top 887%)
25.2M25.20 mi0.35 mi17787-146510-96510-918302(Top 69%)7111(Top 62%)7111(Top 873%)
Finish26.22 mi1.02 mi17886-996580-706580-7019787(Top 74%)7882(Top 69%)7882(Top 967%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

17041

Females

5945

F55-59

5945

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

17535

Females

6203

F55-59

6203

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

17041

Females

5945

F55-59

5945

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

16610

Females

5713

F55-59

5713

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

17513

Females

6196

F55-59

6196

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

16406

Females

5674

F55-59

5674

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

17339

Females

6269

F55-59

6269

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20602

Females

8183

F55-59

8183

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

18035

Females

6783

F55-59

6783

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

18290

Females

6991

F55-59

6991

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

17827

Females

6766

F55-59

6766

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

18273

Females

7041

F55-59

7041

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18521

Females

7225

F55-59

7225

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18302

Females

7111

F55-59

7111

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

19787

Females

7882

F55-59

7882

Passing Analysis

Category:
Athletes Passed
2250
Passed By
1506
Net Change
+744
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18630
5K → 10K720149+571#18630#18059
10K → 15K42362+361#18059#17698
15K → 20K36150+311#17698#17387
20K → Half2921+8#17387#17379
Half → 25K20739+168#17379#17211
25K → 30K182166+16#17211#17195
30K → 20M23381-358#17195#17553
20M → 21M74119-45#17553#17598
21M → 35K4165-24#17598#17622
35K → 23M74102-28#17622#17650
23M → 24M44109-65#17650#17715
24M → 40K3795-58#17715#17773
40K → 25.2M1529-14#17773#17787
25.2M → Finish20119-99#17787#17886
TOTALS22501506+744
📊

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