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BOSTON MARATHON 2023

Christina Balch

Bib: 25351•F

NH

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
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
10:04/mi
31:18
↑ 97↓ 3451.5%
10K· 6.21 mi
10:09/mi
1:02:50
↑ 79↓ 1380.4%
15K· 9.32 mi
10:32/mi
1:35:34
↑ 67↓ 78
20K· 12.43 mi
10:42/mi
2:08:49
↑ 106↓ 860.1%
Half· 13.11 mi
9:23/mi
2:15:13
↑ 19↓ 370.5%
25K· 15.53 mi
11:00/mi
2:41:54
↑ 66↓ 880.2%
30K· 18.64 mi
10:11/mi
3:13:31
↑ 181↓ 1480.2%
20M
10:02/mi
3:27:09
↑ 64↓ 500.2%
21M
10:07/mi
3:37:16
↑ 106↓ 241.6%
35K· 21.75 mi
9:39/mi
3:44:29
↑ 17↓ 861.7%
23M
10:42/mi
3:57:53
↑ 23↓ 630.6%
24M
9:18/mi
4:07:11
↓ 821.3%
40K· 24.85 mi
9:41/mi
4:15:28
↓ 200.3%
25.2M
11:39/mi
4:19:29
↑ 13↓ 160.2%
Finish· 26.22 mi
8:54/mi
4:28:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:15:13
Pace10:19 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:13:20
Pace10:10 /mi
📊Negative Split: 1.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4131:1810:0431:18
10:04
-
10K
6.21 mi12:19:131:02:5010:0731:32
10:09
+0:05
15K
9.32 mi12:51:571:35:3410:1532:44
10:32
+0:23
20K
12.43 mi13:25:122:08:4910:2233:15
10:42
+0:10
Half
13.11 mi13:31:362:15:1310:196:24
9:23
-1:19
25K
15.53 mi13:58:172:41:5410:2526:41
11:00
+1:37
30K
18.64 mi14:29:543:13:3110:2331:37
10:11
-0:49
20M
20.00 mi14:43:323:27:0910:2113:38
10:02
-0:09
21M
21.00 mi14:53:393:37:1610:2110:07
10:07
+0:05
35K
21.75 mi15:00:523:44:2910:197:13
9:39
-0:28
23M
23.00 mi15:14:163:57:5310:2113:24
10:42
+1:03
24M
24.00 mi15:23:344:07:1110:189:18
9:18
-1:24
40K
24.85 mi15:31:514:15:2810:178:17
9:41
+0:23
25.2M
25.20 mi15:35:524:19:2910:184:01
11:39
+1:58
Finish
26.22 mi15:44:564:28:3310:159:04
8:54
-2:45

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

8:54 /mi

Average Pace

10:15 /mi

Slowest Pace

11:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

40:16

15% of race

Time at Steady Pace

1:58:12

44% of race

Time at Slower Pace

1:50:05

41% of race

Average Pace: 10:15 /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 mi11:47:4131:1810:0431:18
10:04
#23615
10K
6.21 mi12:19:131:02:5010:0731:32
10:09
#23873
15K
9.32 mi12:51:571:35:3410:1532:44
10:32
#24125
20K
12.43 mi13:25:122:08:4910:2233:15
10:42
#24144
Half
13.11 mi13:31:362:15:1310:196:24
9:23
#24026
25K
15.53 mi13:58:172:41:5410:2526:41
11:00
#24018
30K
18.64 mi14:29:543:13:3110:2331:37
10:11
#23582
20M
20.00 mi14:43:323:27:0910:2113:38
10:02
#23397
21M
21.00 mi14:53:393:37:1610:2110:07
10:07
#23196
35K
21.75 mi15:00:523:44:2910:197:13
9:39
#23107
23M
23.00 mi15:14:163:57:5310:2113:24
10:42
#23011
24M
24.00 mi15:23:344:07:1110:189:18
9:18
#22844
40K
24.85 mi15:31:514:15:2810:178:17
9:41
#22745
25.2M
25.20 mi15:35:524:19:2910:184:01
11:39
#22727
Finish
26.22 mi15:44:564:28:3310:159:04
8:54
#22605
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi236159708970824522(Top 92%)10194(Top 89%)10194(Top 845%)
10K6.21 mi3.10 mi23873-2589823-1159823-11524016(Top 90%)9893(Top 87%)9893(Top 820%)
15K9.32 mi3.11 mi24125-2529957-1349957-13424522(Top 92%)10194(Top 89%)10194(Top 845%)
20K12.43 mi3.11 mi24144-199975-189975-1824178(Top 91%)10012(Top 88%)10012(Top 829%)
Half13.11 mi0.68 mi24026+1189909+669909+6621798(Top 82%)8694(Top 76%)8694(Top 720%)
25K15.53 mi2.42 mi24018+89906+39906+323991(Top 90%)9951(Top 87%)9951(Top 824%)
30K18.64 mi3.11 mi23582+4369688+2189688+21821486(Top 81%)8628(Top 76%)8628(Top 715%)
20M20.00 mi1.36 mi23397+1859604+849604+8420581(Top 77%)8181(Top 72%)8181(Top 678%)
21M21.00 mi1.00 mi23196+2019505+999505+9918481(Top 69%)7049(Top 62%)7049(Top 584%)
35K21.75 mi0.75 mi23107+899474+319474+3120343(Top 76%)8143(Top 71%)8143(Top 675%)
23M23.00 mi1.25 mi23011+969431+439431+4321775(Top 82%)8952(Top 78%)8952(Top 742%)
24M24.00 mi1.00 mi22844+1679358+739358+7318491(Top 69%)7168(Top 63%)7168(Top 594%)
40K24.85 mi0.85 mi22745+999305+539305+5319020(Top 71%)7516(Top 66%)7516(Top 623%)
25.2M25.20 mi0.35 mi22727+189299+69299+621890(Top 82%)9074(Top 79%)9074(Top 752%)
Finish26.22 mi1.02 mi22605+1229244+559244+5517526(Top 66%)6677(Top 58%)6677(Top 553%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21story building
+97ft-345ft

Overall

24522

Females

10194

F50-54

10194

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

24016

Females

9893

F50-54

9893

10K→15K

6.2 - 9.3 mi

Top 92%
×3story building
+67ft-78ft

Overall

24522

Females

10194

F50-54

10194

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

24178

Females

10012

F50-54

10012

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21798

Females

8694

F50-54

8694

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

23991

Females

9951

F50-54

9951

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

21486

Females

8628

F50-54

8628

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20581

Females

8181

F50-54

8181

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18481

Females

7049

F50-54

7049

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

20343

Females

8143

F50-54

8143

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

21775

Females

8952

F50-54

8952

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

18491

Females

7168

F50-54

7168

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

19020

Females

7516

F50-54

7516

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21890

Females

9074

F50-54

9074

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

17526

Females

6677

F50-54

6677

Passing Analysis

Category:
Athletes Passed
1898
Passed By
888
Net Change
+1010
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23615
5K → 10K97355-258#23615#23873
10K → 15K46298-252#23873#24125
15K → 20K103122-19#24125#24144
20K → Half1180+118#24144#24026
Half → 25K10092+8#24026#24018
25K → 30K4371+436#24018#23582
30K → 20M1850+185#23582#23397
20M → 21M2010+201#23397#23196
21M → 35K890+89#23196#23107
35K → 23M1059+96#23107#23011
23M → 24M1670+167#23011#22844
24M → 40K1012+99#22844#22745
40K → 25.2M257+18#22745#22727
25.2M → Finish1242+122#22727#22605
TOTALS1898888+1010
📊

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