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BOSTON MARATHON 2023

Kristin Ross

NH

Bib: 18178 F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 40%
Gender (Female)
#0 / 11423
Top 21%
Division (F18-39)
#0 / 4884
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:04/mi
25:04
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:43/mi
49:03
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:25/mi
1:12:06
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:31/mi
1:35:26
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:29/mi
1:40:32
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:47/mi
1:59:25
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:01/mi
2:24:19
↑ 181↓ 1480.2%
138 ft elev
20M
8:15/mi
2:35:31
↑ 64↓ 500.2%
148 ft elev
21M
8:15/mi
2:43:46
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:30/mi
2:49:23
↑ 17↓ 861.7%
156 ft elev
23M
8:05/mi
2:59:30
↑ 23↓ 630.6%
116 ft elev
24M
7:37/mi
3:07:07
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:58/mi
3:13:56
↓ 200.3%
20 ft elev
25.2M
8:42/mi
3:16:56
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:36/mi
3:24:41
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:40:327:40 /mi⚡ faster
2nd Half
1:44:097:57 /mi+3.6%
Positive split — 3.6% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:0725:048:0425:04
8:04
-
10K
6.21 mi11:44:0649:037:5423:59
7:43
-0:21
15K
9.32 mi12:07:091:12:067:4423:03
7:25
-0:18
20K
12.43 mi12:30:291:35:267:4123:20
7:31
+0:06
Half
13.11 mi12:35:351:40:327:405:06
7:29
-0:02
25K
15.53 mi12:54:281:59:257:4118:53
7:47
+0:18
30K
18.64 mi13:19:222:24:197:4524:54
8:01
+0:14
20M
20.00 mi13:30:342:35:317:4711:12
8:15
+0:14
21M
21.00 mi13:38:492:43:467:488:15
8:15
0:00
35K
21.75 mi13:44:262:49:237:475:37
7:30
-0:45
23M
23.00 mi13:54:332:59:307:4810:07
8:05
+0:35
24M
24.00 mi14:02:103:07:077:487:37
7:37
-0:28
40K
24.85 mi14:08:593:13:567:486:49
7:58
+0:21
25.2M
25.20 mi14:11:593:16:567:493:00
8:42
+0:44
Finish
26.22 mi14:19:443:24:417:497:45
7:36
-1:06

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

7:25 /mi

Average Pace

7:49 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:02:14

89% of race

Time at Steady Pace

22:27

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:48 /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 mi11:20:0725:048:0425:04
8:04
#14496
10K
6.21 mi11:44:0649:037:5423:59
7:43
#13549
15K
9.32 mi12:07:091:12:067:4423:03
7:25
#12119
20K
12.43 mi12:30:291:35:267:4123:20
7:31
#11349
Half
13.11 mi12:35:351:40:327:405:06
7:29
#11272
25K
15.53 mi12:54:281:59:257:4118:53
7:47
#11195
30K
18.64 mi13:19:222:24:197:4524:54
8:01
#11103
20M
20.00 mi13:30:342:35:317:4711:12
8:15
#11155
21M
21.00 mi13:38:492:43:467:488:15
8:15
#10991
35K
21.75 mi13:44:262:49:237:475:37
7:30
#10887
23M
23.00 mi13:54:332:59:307:4810:07
8:05
#10832
24M
24.00 mi14:02:103:07:077:487:37
7:37
#10717
40K
24.85 mi14:08:593:13:567:486:49
7:58
#10650
25.2M
25.20 mi14:11:593:16:567:493:00
8:42
#10648
Finish
26.22 mi14:19:443:24:417:497:45
7:36
#10559
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi1449643274327953716421642
10K6.21 mi3.10 mi13549+9473771+5563771+5561245131223122
15K9.32 mi3.11 mi12119+14302963+8082963+808953716421642
20K12.43 mi3.11 mi11349+7702527+4362527+436941416601660
Half13.11 mi0.68 mi11272+772485+422485+421013919721972
25K15.53 mi2.42 mi11195+772467+182467+181102825042504
30K18.64 mi3.11 mi11103+922462+52462+51103926672667
20M20.00 mi1.36 mi11155-522518-562518-561200832923292
21M21.00 mi1.00 mi10991+1642456+622456+62885218781878
35K21.75 mi0.75 mi10887+1042418+382418+38865717741774
23M23.00 mi1.25 mi10832+552416+22416+21035626992699
24M24.00 mi1.00 mi10717+1152388+282388+28857219231923
40K24.85 mi0.85 mi10650+672377+112377+11994026372637
25.2M25.20 mi0.35 mi10648+22392-152392-151089931713171
Finish26.22 mi1.02 mi10559+892378+142378+14936224202420

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9537

Females

1642

F18-39

1642

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

12451

Females

3122

F18-39

3122

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9537

Females

1642

F18-39

1642

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9414

Females

1660

F18-39

1660

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10139

Females

1972

F18-39

1972

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

11028

Females

2504

F18-39

2504

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11039

Females

2667

F18-39

2667

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12008

Females

3292

F18-39

3292

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

8852

Females

1878

F18-39

1878

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

8657

Females

1774

F18-39

1774

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

10356

Females

2699

F18-39

2699

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

8572

Females

1923

F18-39

1923

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9940

Females

2637

F18-39

2637

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10899

Females

3171

F18-39

3171

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9362

Females

2420

F18-39

2420

Passing Analysis

Category:
Athletes Passed
4547
Passed By
610
Net Change
+3937
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14496
5K → 10K100457+947#14496#13549
10K → 15K14388+1430#13549#12119
15K → 20K7766+770#12119#11349
20K → Half836+77#11349#11272
Half → 25K16285+77#11272#11195
25K → 30K220128+92#11195#11103
30K → 20M76128-52#11103#11155
20M → 21M17915+164#11155#10991
21M → 35K1117+104#10991#10887
35K → 23M11055+55#10887#10832
23M → 24M13621+115#10832#10717
24M → 40K10033+67#10717#10650
40K → 25.2M3230+2#10650#10648
25.2M → Finish12031+89#10648#10559
TOTALS4547610+3937

Passing Charts

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