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BOSTON MARATHON 2023

Kirsten Starmer

Bib: 17297•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 43%
Division (F18-39)
#0 / 4884
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
8:25/mi
26:09
↑ 97↓ 3451.5%
10K· 6.21 mi
8:14/mi
51:44
↑ 79↓ 1380.4%
15K· 9.32 mi
8:18/mi
1:17:32
↑ 67↓ 78
20K· 12.43 mi
8:24/mi
1:43:37
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:49:19
↑ 19↓ 370.5%
25K· 15.53 mi
8:26/mi
2:09:46
↑ 66↓ 880.2%
30K· 18.64 mi
8:35/mi
2:36:25
↑ 181↓ 1480.2%
20M
8:35/mi
2:48:05
↑ 64↓ 500.2%
21M
8:56/mi
2:57:01
↑ 106↓ 241.6%
35K· 21.75 mi
8:13/mi
3:03:10
↑ 17↓ 861.7%
23M
8:33/mi
3:13:52
↑ 23↓ 630.6%
24M
8:13/mi
3:22:05
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:29:11
↓ 200.3%
25.2M
8:51/mi
3:32:14
↑ 13↓ 160.2%
Finish· 26.22 mi
8:08/mi
3:40:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:19
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time1:51:12
Pace8:29 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4526:098:2526:09
8:25
-
10K
6.21 mi11:46:2051:448:2025:35
8:14
-0:11
15K
9.32 mi12:12:081:17:328:1925:48
8:18
+0:04
20K
12.43 mi12:38:131:43:378:2026:05
8:24
+0:06
Half
13.11 mi12:43:551:49:198:205:42
8:21
-0:03
25K
15.53 mi13:04:222:09:468:2120:27
8:26
+0:05
30K
18.64 mi13:31:012:36:258:2326:39
8:35
+0:09
20M
20.00 mi13:42:412:48:058:2411:40
8:35
0:00
21M
21.00 mi13:51:372:57:018:268:56
8:56
+0:21
35K
21.75 mi13:57:463:03:108:256:09
8:13
-0:43
23M
23.00 mi14:08:283:13:528:2610:42
8:33
+0:20
24M
24.00 mi14:16:413:22:058:258:13
8:13
-0:20
40K
24.85 mi14:23:473:29:118:257:06
8:18
+0:05
25.2M
25.20 mi14:26:503:32:148:253:03
8:51
+0:33
Finish
26.22 mi14:35:073:40:318:258:17
8:08
-0:43

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

8:08 /mi

Average Pace

8:25 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:31

72% of race

Time at Steady Pace

1:01:00

28% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:25 /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 mi11:20:4526:098:2526:09
8:25
#17012
10K
6.21 mi11:46:2051:448:2025:35
8:14
#16686
15K
9.32 mi12:12:081:17:328:1925:48
8:18
#16646
20K
12.43 mi12:38:131:43:378:2026:05
8:24
#16535
Half
13.11 mi12:43:551:49:198:205:42
8:21
#16564
25K
15.53 mi13:04:222:09:468:2120:27
8:26
#16431
30K
18.64 mi13:31:012:36:258:2326:39
8:35
#16085
20M
20.00 mi13:42:412:48:058:2411:40
8:35
#15929
21M
21.00 mi13:51:372:57:018:268:56
8:56
#15720
35K
21.75 mi13:57:463:03:108:256:09
8:13
#15633
23M
23.00 mi14:08:283:13:528:2610:42
8:33
#15490
24M
24.00 mi14:16:413:22:058:258:13
8:13
#15362
40K
24.85 mi14:23:473:29:118:257:06
8:18
#15218
25.2M
25.20 mi14:26:503:32:148:253:03
8:51
#15139
Finish
26.22 mi14:35:073:40:318:258:17
8:08
#15070
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi170125934593416565(Top 62%)5637(Top 49%)5637(Top 115%)
10K6.21 mi3.10 mi16686+3265699+2355699+23516499(Top 62%)5574(Top 49%)5574(Top 114%)
15K9.32 mi3.11 mi16646+405692+75692+716565(Top 62%)5637(Top 49%)5637(Top 115%)
20K12.43 mi3.11 mi16535+1115635+575635+5716216(Top 61%)5476(Top 48%)5476(Top 112%)
Half13.11 mi0.68 mi16564-295655-205655-2016846(Top 63%)5792(Top 51%)5792(Top 119%)
25K15.53 mi2.42 mi16431+1335597+585597+5815806(Top 59%)5316(Top 47%)5316(Top 109%)
30K18.64 mi3.11 mi16085+3465424+1735424+17314791(Top 56%)4809(Top 42%)4809(Top 98%)
20M20.00 mi1.36 mi15929+1565357+675357+6714198(Top 53%)4540(Top 40%)4540(Top 93%)
21M21.00 mi1.00 mi15720+2095254+1035254+10313067(Top 49%)3988(Top 35%)3988(Top 82%)
35K21.75 mi0.75 mi15633+875216+385216+3813646(Top 51%)4381(Top 38%)4381(Top 90%)
23M23.00 mi1.25 mi15490+1435155+615155+6113531(Top 51%)4362(Top 38%)4362(Top 89%)
24M24.00 mi1.00 mi15362+1285080+755080+7512767(Top 48%)4007(Top 35%)4007(Top 82%)
40K24.85 mi0.85 mi15218+1445003+775003+7712132(Top 46%)3757(Top 33%)3757(Top 77%)
25.2M25.20 mi0.35 mi15139+794970+334970+3311718(Top 44%)3614(Top 32%)3614(Top 74%)
Finish26.22 mi1.02 mi15070+694949+214949+2113011(Top 49%)4227(Top 37%)4227(Top 87%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16565

Females

5637

F18-39

5637

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

16499

Females

5574

F18-39

5574

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16565

Females

5637

F18-39

5637

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16216

Females

5476

F18-39

5476

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16846

Females

5792

F18-39

5792

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

15806

Females

5316

F18-39

5316

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14791

Females

4809

F18-39

4809

30K→20M

18.6 - 20.0 mi

Top 53%
×5story building
+64ft-50ft

Overall

14198

Females

4540

F18-39

4540

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13067

Females

3988

F18-39

3988

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

13646

Females

4381

F18-39

4381

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13531

Females

4362

F18-39

4362

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

12767

Females

4007

F18-39

4007

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12132

Females

3757

F18-39

3757

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11718

Females

3614

F18-39

3614

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13011

Females

4227

F18-39

4227

Passing Analysis

Category:
Athletes Passed
2674
Passed By
732
Net Change
+1942
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17012
5K → 10K495169+326#17012#16686
10K → 15K230190+40#16686#16646
15K → 20K220109+111#16646#16535
20K → Half2251-29#16535#16564
Half → 25K19966+133#16564#16431
25K → 30K38539+346#16431#16085
30K → 20M17014+156#16085#15929
20M → 21M22011+209#15929#15720
21M → 35K925+87#15720#15633
35K → 23M16724+143#15633#15490
23M → 24M13911+128#15490#15362
24M → 40K1539+144#15362#15218
40K → 25.2M823+79#15218#15139
25.2M → Finish10031+69#15139#15070
TOTALS2674732+1942
📊

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