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SF MARATHON 1ST HALF 2026

Sofia Duff

Bib: 16133•F•Age: 24

SF, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 47%
Gender (Female)
#0 / 2930
Top 34%
F20-29
#0 / 353
Top 38%
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
9:47/mi
19:34
→ flat
4M
9:47/mi
39:07
↑ 67↓ 69
6M
10:28/mi
1:00:03
↑ 1231.1%
8M
10:04/mi
1:20:11
↑ 166↓ 531.1%
9.6M
10:04/mi
1:36:18
↑ 68↓ 1931.5%
10M
20:01/mi
1:44:18
↓ 241.1%
10.5M
4:44/mi
1:46:40
↓ 732.7%
12M
15:45/mi
2:10:17
↑ 2803.2%
Finish· 13.11 mi
10:00/mi
2:21:23
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:00:03
Pace10:01 /mi
2nd Half
Distance7.11 mi
Time1:21:20
Pace11:26 /mi
📊Positive Split: 35.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi06:57:4419:349:4719:34
9:47
-
4M
4.00 mi07:17:1739:079:4719:33
9:47
0:00
6M
6.00 mi07:38:131:00:0310:0120:56
10:28
+0:41
8M
8.00 mi07:58:211:20:1110:0120:08
10:04
-0:24
9.6M
9.60 mi08:14:281:36:1810:0216:07
10:04
0:00
10M
10.00 mi08:22:281:44:1810:268:00
20:01
+9:57
10.5M
10.50 mi08:24:501:46:4010:102:22
4:44
-15:17
12M
12.00 mi08:48:272:10:1710:5123:37
15:45
+11:01
Finish
13.11 mi08:59:332:21:2310:4711:06
10:00
-5:45

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

4:44 /mi

Average Pace

10:47 /mi

Slowest Pace

20:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22

2% of race

Time at Steady Pace

1:47:24

76% of race

Time at Slower Pace

31:37

22% of race

Average Pace: 10:47 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi06:57:4419:349:4719:34
9:47
#2696
4M
4.00 mi07:17:1739:079:4719:33
9:47
#2548
6M
6.00 mi07:38:131:00:0310:0120:56
10:28
#2772
8M
8.00 mi07:58:211:20:1110:0120:08
10:04
#2680
9.6M
9.60 mi08:14:281:36:1810:0216:07
10:04
#2871
10M
10.00 mi08:22:281:44:1810:268:00
20:01
#2908
10.5M
10.50 mi08:24:501:46:4010:102:22
4:44
#2895
12M
12.00 mi08:48:272:10:1710:5123:37
15:45
#3129
Finish
13.11 mi08:59:332:21:2310:4711:06
10:00
#3072
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 49%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

10:22

Segment Time

11:31/mi

Pace

0.90 mi

Distance

Overall

3198

Women

1078

Division

146

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF20-29Seg. OverallSeg. FemalesSeg. F20-29
2M2.00 mi2.00 mi2696804994057(Top 62%)1531(Top 52%)209(Top 59%)
4M4.00 mi2.00 mi2548+148751+5398+12502(Top 38%)730(Top 25%)93(Top 26%)
6M6.00 mi2.00 mi2772-224848-97112-143242(Top 49%)1049(Top 36%)144(Top 41%)
8M8.00 mi2.00 mi2680+92781+67106+62459(Top 37%)671(Top 23%)90(Top 25%)
9.6M9.60 mi1.60 mi2871-191890-109120-144079(Top 62%)1611(Top 55%)207(Top 59%)
10M10.00 mi0.40 mi2908-37904-14122-23480(Top 53%)1228(Top 42%)162(Top 46%)
10.5M10.50 mi0.50 mi2895+13897+7123-12465(Top 37%)751(Top 26%)106(Top 30%)
12M12.00 mi1.50 mi3129-2341013-116137-144057(Top 62%)1531(Top 52%)209(Top 59%)
Finish13.11 mi1.11 mi3072+57993+20133+42863(Top 44%)954(Top 33%)133(Top 38%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 62%
~flat
+5ft-3ft

Overall

4057

Females

1531

F20-24

209

2M→4M

2.0 - 4.0 mi

Top 38%
×4story building
+67ft-69ft

Overall

2502

Females

730

F20-24

94

4M→6M

4.0 - 6.0 mi

Top 49%
×9story building
+123ft-9ft

Overall

3242

Females

1049

F20-24

145

6M→8M

6.0 - 8.0 mi

Top 37%
×12story building
+166ft-53ft

Overall

2459

Females

671

F20-24

90

8M→9.6M

8.0 - 9.6 mi

Top 62%
×13story building
+68ft-193ft

Overall

4079

Females

1611

F20-24

207

9.6M→10M

9.6 - 10.0 mi

Top 53%
×2story building
+0ft-24ft

Overall

3480

Females

1228

F20-24

162

10M→10.5M

10.0 - 10.5 mi

Top 37%
×6story building
+1ft-73ft

Overall

2465

Females

751

F20-24

106

10.5M→12M

10.5 - 12.0 mi

Top 62%
×21story building
+280ft-26ft

Overall

4057

Females

1531

F20-24

209

12M→Finish

12.0 - 13.1 mi

Top 44%
×7story building
+14ft-89ft

Overall

2863

Females

954

F20-24

133

Passing Analysis

Category:
Athletes Passed
578*
Passed By
954
Net Change
-376
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#2696
2M → 4M21567+148#2696#2548
4M → 6M22246-224#2548#2772
6M → 8M184*92+92#2772#2680
8M → 9.6M17208-191#2680#2871
9.6M → 10M3269-37#2871#2908
10M → 10.5M196+13#2908#2895
10.5M → 12M18252-234#2895#3129
12M → Finish71*14+57#3129#3072
TOTALS578*954-376

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events